Money decisions, explained in plain English.

Saving, budgeting, credit, debt, and investing — broken down step by step, with real dollar examples and free calculators. No jargon, no hype, no sponsored picks.

IndependentWe don’t sell financial products, and no company pays to be featured.
Research-backedFigures are checked against the IRS, CFPB, and Federal Reserve.
No sponsored picksOur guides teach you how to choose — they never push a product.

Free calculators

Run your own numbers. Nothing you type leaves your browser.

Compound Interest Calculator

See how savings and investments can grow with regular monthly contributions.

Try it

Debt Payoff Calculator

Compare the avalanche and snowball methods and see how an extra payment changes your debt-free date.

Try it

Mortgage Calculator

Estimate your monthly principal and interest, and the total interest over the life of the loan.

Try it

Budget Planner

Split your take-home pay into needs, wants, and savings with the 50/30/20 rule — and see a full year of savings.

Try it

Retirement Calculator

Project your savings at retirement in future dollars and in today’s dollars, plus a 4%-rule income estimate.

Try it

Federal Tax Estimator

Estimate your 2026 federal income tax, effective rate, and refund or amount owed. Estimate only — not tax advice.

Try it

Emergency Fund Calculator

Turn your monthly essential expenses into a target fund — and see how many months it takes to build it.

Try it

Credit Card Interest Calculator

Enter a balance, APR, and monthly payment to see your payoff date and exactly how much interest the card will cost you.

Try it

Car Loan Calculator

Price, down payment, rate, and term — see the real monthly payment and the total interest over the loan.

Try it

Net Worth Calculator

Add up what you own and what you owe. The difference — your net worth — is the number worth tracking every year.

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Paycheck Calculator

Estimate your take-home pay after 2026 federal income tax and FICA, for any pay schedule. Estimate only — not tax advice.

Try it

2027 COLA Calculator

See your 2027 Social Security benefit at the announced 3.6% COLA — and your net amount after the projected Medicare Part B premium.

Try it

Start here

New to getting your money organized? Work through these three steps in order.

1

Build a starter safety net

Open a high-yield savings account and work toward one month of essential expenses, then three to six. Read the guide →

2

Give every dollar a job

Use the 50/30/20 rule as a starting budget you can adjust to your real life. Read the guide →

3

Grab the free money

If your job offers a 401(k) match, contributing enough to get the full match beats almost everything else. Read the guide →

Browse by topic

Every DollarBrook guide, organized by the question it answers.

Looking for something specific? The Topics hub groups every guide and calculator — budgeting, debt, retirement, taxes, investing, and banking — on one page. New to a term? Try the plain-English glossary, or check the 2026 money numbers for this year's official limits and brackets.

Latest articles

Recently published and reviewed guides from the DollarBrook editorial team.

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One short email each week: one idea to save more, pay off debt faster, or invest with less stress — in plain English, with the math shown. Free, and you can unsubscribe anytime.

We never sell or share your email address.

Why readers trust DollarBrook

Primary sources, cited

Contribution limits, tax rules, and consumer protections are checked against IRS.gov, ConsumerFinance.gov, and FederalReserve.gov — and the source is named in every guide.

Education, not sales

DollarBrook earns money from advertising, not from ranking products. When a guide mentions a type of account, it teaches you how to compare — it never names a “best” bank or card for a fee.

Corrections, in the open

When a figure changes or we get something wrong, we update the page, change the “last updated” date, and note the correction. Read our editorial policy.

All articles

Every DollarBrook guide, grouped by topic. Each one includes worked examples, an FAQ, and links to the calculator that goes with it.

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Financial calculators

Free, private, and instant. These tools run entirely in your browser — your numbers are never sent anywhere. Results are estimates for education only, not financial advice.

Compound Interest Calculator

Project savings growth from a starting amount, monthly contributions, time, and an assumed rate of return.

Open calculator

Debt Payoff Calculator

Enter up to three debts and an extra monthly payment to compare avalanche vs. snowball payoff timelines.

Open calculator

Mortgage Calculator

Estimate monthly principal & interest and total interest for a fixed-rate home loan.

Open calculator

Budget Planner

Enter your after-tax income and your needs/wants/savings split (default 50/30/20) to get dollar targets for each bucket.

Open calculator

Retirement Calculator

Project your balance at retirement, what it is worth in today’s dollars after inflation, and a 4%-rule monthly income estimate.

Open calculator

Federal Tax Estimator (2026)

Estimate federal income tax through the 2026 marginal brackets after the standard deduction. Estimate only — not tax advice.

Open calculator

Emergency Fund Calculator

Multiply monthly essential expenses by 3, 6, 9, or 12 months to set your target, then see how long it takes to save it.

Open calculator

Credit Card Interest Calculator

See how many months a balance, APR, and fixed monthly payment take to pay off — and the total interest it costs.

Open calculator

Car Loan Calculator

Enter price, down payment, interest rate, and term to get the monthly payment, total interest, and true total cost.

Open calculator

Net Worth Calculator

Total your assets (home, savings, investments, vehicles) and your debts to find your net worth in one number.

Open calculator

Paycheck Calculator

Estimate take-home pay per paycheck after 2026 federal income tax and FICA. Estimate only — not tax advice.

Open calculator

2027 COLA Calculator

Enter your current monthly Social Security benefit to see your 2027 benefit at +3.6%, your monthly increase, and your net amount after the projected Medicare Part B premium ($209.50 — a projection, not the official figure).

Open calculator

Compound Interest Calculator

See what your money could become when growth compounds — earnings themselves start earning.

Your numbers

Assumes monthly compounding and contributions at month-end. Real returns vary and are not guaranteed.

Result

—
—You contribute
—Growth (interest)

Estimates only — not financial advice. Learn the ideas behind this in Saving for Retirement in Your 20s and 30s.

Debt Payoff Calculator

Compare the two proven payoff strategies: avalanche (highest rate first — least interest) and snowball (smallest balance first — fastest wins).

Your debts

Leave a debt at 0 to ignore it. Assumes fixed APRs and on-time minimums.

Comparison

StrategyDebt-free inTotal interest
Avalanche (highest APR first)——
Snowball (smallest balance first)——
—Interest saved by avalanche
—Total monthly payment

Estimates only — not financial advice. Read the full plan in How to Pay Off Credit Card Debt.

Mortgage Calculator

Estimate your monthly mortgage payment — principal, interest, taxes, insurance, PMI and HOA — plus total interest, payoff time, and a full yearly amortization schedule.

Last updated: October 28, 2026

Your numbers

Optional costs & extra payment

Optional costs are included in the total monthly payment when you enter them. Leave any optional cost at 0 if it does not apply to you. The principal & interest figure always shows the loan payment on its own, so you can see both numbers side by side.

Result

—

per month, principal & interest

—Total monthly payment (with optional costs & extra payment)
—Payoff time
—Loan amount
—Total interest

Estimates only — not financial advice. Before you shop, read How Much House Can I Afford?

Yearly amortization schedule

How each year of payments splits between interest and principal, and the balance left at the end of the year. The table updates live from your numbers above, including any extra monthly payment.

YearInterestPrincipalEnding balance
Press “Calculate” to see the yearly schedule.

How your payment is calculated

A fixed-rate mortgage payment uses the standard formula: M = P x r(1+r)^n / ((1+r)^n - 1), where M is the monthly principal and interest payment, P is the loan amount, r is the monthly interest rate (the yearly rate divided by 12), and n is the total number of payments.

Worked example: a home price of $350,000 with a $70,000 down payment leaves a loan amount of $280,000. At 6.5% over 30 years (360 payments), the monthly rate is 6.5% ÷ 12 and the formula gives $1,770 per month in principal and interest. Over the full term you pay $357,125 in total interest on top of the $280,000 borrowed.

What each input means

  • Home price — the purchase price of the home.
  • Down payment — the cash you pay upfront. The loan amount is the home price minus the down payment.
  • Interest rate — the yearly rate on the loan, as a percentage. Your credit, lender, and loan type all affect the rate you are offered.
  • Loan term — how many years you have to repay, most commonly 30 or 15 years.
  • Property tax ($ per year) — the yearly property tax on the home. Enter the annual figure; the calculator adds one-twelfth of it to the total monthly payment.
  • Home insurance ($ per year) — the yearly homeowners insurance premium, also added to the total as one-twelfth per month.
  • PMI ($ per year) — private mortgage insurance, charged on most conventional loans when the down payment is below 20% of the home price. Enter the yearly cost, or 0 if you do not pay it.
  • HOA dues ($ per month) — monthly homeowners association dues, added to the total exactly as entered.
  • Extra payment ($ per month) — an optional amount paid toward principal every month on top of the regular payment. It shortens the payoff time and reduces total interest.

Worked example: the true monthly cost

Principal and interest are only part of what homeownership costs each month. On the default loan — $1,770 per month in principal and interest — add property tax of $3,600 a year ($300 a month) and home insurance of $1,800 a year ($150 a month) and the true monthly cost is $1,770 + $300 + $150 = $2,220 per month total. There is no PMI in this example because the 20% down payment ($70,000 on $350,000) avoids it. Try it above: enter 3600 for property tax and 1800 for home insurance and the total monthly payment shows $2,220.

15-year vs 30-year

On a $280,000 loan at 6.5%, a 15-year term costs $2,439 per month with $159,038 in total interest, versus $1,770 per month with $357,125 in total interest over 30 years. The shorter term saves $198,086 in interest, but costs $669 more per month. A 15-year loan builds equity much faster; a 30-year loan keeps the required payment lower, and you can still pay extra toward principal in the months you can afford it.

Why extra payments work

Early in a mortgage, most of each payment is interest and very little is principal. Adding $200 per month to the default 30-year loan pays it off in 22 years 9 months instead of 30 years and saves $101,283 in interest — because every extra dollar goes straight to principal, so there is less balance for next month's interest to be charged on. The amortization table shows the same shift over time even with no extra payment: in Year 1 you pay $18,108 in interest against only $3,130 in principal, while in the final year you pay $729 in interest against $20,508 in principal.

Keep planning

Before you shop, work through How Much House Can I Afford? for the 28/36 rule and the costs nobody mentions. Then fit the payment into your month with the Budget Planner, clear other debts faster with the Debt Payoff Calculator, and protect the purchase with a safety net from the Emergency Fund Calculator.

Estimates only — not a loan offer and not financial advice. Your actual payment depends on your lender, credit, property taxes, insurance, and HOA dues.

Frequently asked questions

Budget Planner

Turn your take-home pay into three clear targets — needs, wants, and savings — using the 50/30/20 rule as the starting split. Adjust the percentages to fit your life; they must total 100%.

Your numbers

Assumptions: percentages apply to after-tax (take-home) income. “Needs” are essentials like housing, utilities, groceries, insurance, transport, and minimum debt payments; minimum payments count as needs, and only payments above the minimum belong in the savings bucket.

Your monthly plan

—

to savings & extra debt payoff, per month

—Needs per month
—Wants per month
—Projected savings in a year
—Share of income saved
Worked exampleOn $3,600 of take-home pay, the default 50/30/20 split gives $1,800 for needs, $1,080 for wants, and $720 to savings — $8,640 saved over a full year.

Estimates only — education, not financial advice. See how the buckets work in The 50/30/20 Budget Rule, Explained.

Retirement Calculator

Project what your savings could grow to by retirement — in future dollars, in today’s purchasing power, and as a monthly income estimate using the 4% rule.

Your numbers

Assumptions: contributions are made monthly at month-end and compound monthly at a constant return; the return and inflation rates stay fixed for the whole period; taxes, fees, employer matches, and Social Security are not included. Real returns vary year to year and are not guaranteed.

Projection at retirement

—

projected value at retirement (future dollars)

—In today’s dollars (after inflation)
—Est. monthly income (4% rule)
—You contribute in total
—Years of growth
Worked exampleStarting at age 30 with $10,000 saved and adding $400 a month at a 7% return projects to about $971,000 by age 67 — about $325,000 in today’s dollars at 3% inflation, supporting roughly $3,240 a month under the 4% rule.

The 4% rule is a long-used planning guideline (withdraw 4% of the balance in the first retirement year), not a guarantee. Estimates only — education, not financial advice. Background: Saving for Retirement in Your 20s and 30s.

Federal Tax Estimator — 2026

A quick estimate of your 2026 federal income tax using the marginal brackets and standard deductions in IRS Revenue Procedure 2025-32. Federal only.

Estimate only — this is NOT tax adviceThis tool covers federal income tax on wages with the standard deduction only. It does not include state taxes, tax credits, itemized deductions, self-employment tax, or other income. For your actual return, use IRS.gov, tax software, or a qualified tax professional.

Your numbers

How it works: gross income minus pre-tax deductions, minus the 2026 standard deduction for your filing status (Single $16,100 · Married Filing Jointly $32,200 · Head of Household $24,150), gives taxable income, which is then taxed slice by slice through the 2026 marginal brackets.

Your estimate

—

estimated 2026 federal income tax

—Taxable income
—Effective tax rate
—Your top (marginal) bracket
—Standard deduction applied
BracketIncome taxed in itTax
Press “Estimate my tax” to see the bracket-by-bracket breakdown.

Estimate only — not tax advice. Figures: IRS Revenue Procedure 2025-32 (2026 brackets and standard deductions). Verify at IRS.gov.

Emergency Fund Calculator

Set your safety-net target from the expenses you truly could not skip — then see exactly how many months of saving it takes to get there.

Your numbers

Assumptions: “essential” means bare-bones costs — housing, utilities, groceries, insurance, minimum debt payments, and transport — not your full spending. The timeline assumes no interest; a high-yield savings account would finish the job slightly sooner.

Your target

—

target emergency fund

—Still to save
—Time to reach the target
Worked exampleWith $2,650 of monthly essentials, a 6-month target is $15,900. Saving $300 a month from zero reaches it in about 53 months — sooner with windfalls like a tax refund.

Estimates only — education, not financial advice. The full plan is in How to Build an Emergency Fund.

Credit Card Interest Calculator

Enter a card balance, its APR, and the fixed amount you can pay each month. We will show exactly when the card is paid off and how much interest it costs you along the way.

Last updated: October 26, 2026

Your numbers

Assumes a fixed APR, the same payment every month, and no new charges on the card. Interest is calculated monthly on the remaining balance.

Your payoff

—

until the card is paid off

—Total interest paid
—Total you pay (balance + interest)
—Interest in the first month
—Share of each payment lost to interest (month 1)
Worked exampleA $3,500 balance at 24.99% APR, paid at $150 a month, is gone in 33 months — but it costs $1,343 in interest, for a total of $4,843 paid. Paying $200 a month instead would clear it in about 22 months and save roughly $445 of that interest. Try it above.

Estimates only — education, not financial advice. For a full payoff plan across several cards, read How to Pay Off Credit Card Debt and compare strategies in the Debt Payoff Calculator. New to the term? See APR in the glossary.

Frequently asked questions

Car Loan Calculator

See the true cost of a car loan before you sit down at the dealership: the monthly payment, the total interest, and what the car really costs once financing is included.

Last updated: October 26, 2026

Your numbers

Principal & interest only. Sales tax, title, registration, dealer fees, and insurance are extra — ask the dealer for the “out-the-door” price and enter that as the vehicle price for the fullest picture.

Result

—

per month, principal & interest

—Amount you borrow
—Total interest
—Total cost (down payment + all payments)
—Number of payments
Worked exampleA $28,000 car with $4,000 down, at 7.5% for 60 months, borrows $24,000 and costs $480.91 a month. Over the loan you pay $4,855 in interest, so the car’s true total cost is $32,855 — not $28,000. Stretching the same loan to 72 months drops the payment but adds roughly $1,000 more interest.

Estimates only — education, not financial advice. Your credit score strongly affects the rate you are offered: read How Credit Scores Work, and see what an existing car loan does to your overall picture in the Net Worth Calculator.

Frequently asked questions

Net Worth Calculator

Your net worth is one number: everything you own minus everything you owe. It is the simplest honest scoreboard in personal finance — calculate it once a year and watch the trend, not the day-to-day noise.

Last updated: October 26, 2026

What you own (assets)

What you owe (debts)

Use realistic resale values, not what you paid. Leave any line at 0 if it does not apply. Nothing you type leaves your browser.

Your net worth

—

assets minus debts

—Total assets
—Total debts
—Home equity (value − mortgage)
—Debt as a share of assets
Worked exampleThe default numbers above — a $320,000 home, $18,500 in the bank, $64,000 invested, $16,500 of vehicles, and $4,000 of other assets ($423,000 total) against a $248,000 mortgage, $3,500 of card debt, an $11,800 car loan, and $9,200 of student loans ($272,500 total) — give a net worth of $150,500.

A negative net worth is common early in adult life (student loans arrive before savings do) and is a starting point, not a verdict. It improves from both directions: grow assets with the Retirement Calculator in mind, and shrink debts with the credit card payoff guide. Review the whole picture once a year with the yearly finance checklist.

Frequently asked questions

Paycheck Calculator — Take-Home Pay Estimator

Estimate what actually lands in your bank account: gross pay minus federal income tax (2026 brackets and standard deduction) and FICA payroll taxes.

Last updated: October 26, 2026

Estimate only — this is NOT tax adviceThis tool estimates federal income tax using the 2026 brackets and standard deduction in IRS Revenue Procedure 2025-32, plus FICA (Social Security 6.2% + Medicare 1.45%). It does not include state or local taxes, pre-tax deductions like 401(k) contributions or health premiums, tax credits, or other income — so your real paycheck will differ. For your actual return, use IRS.gov, tax software, or a qualified tax professional.

Your numbers

How it works: your per-paycheck gross is annualized, the 2026 standard deduction for your filing status is subtracted, and the result is taxed slice by slice through the 2026 federal brackets. FICA is 7.65% of gross pay; above the annual Social Security wage cap the 6.2% portion stops, and an extra 0.9% Medicare tax can apply at high incomes — neither adjustment is included, so very high earners should treat this as a rough estimate only.

Your estimated take-home pay

—

per paycheck, after federal income tax and FICA

—Federal income tax per paycheck
—FICA per paycheck
—Take-home pay per year
—Effective federal tax rate

Estimate only — not tax advice. For a deeper annual estimate with withholding, use the Federal Tax Estimator; for the official 2026 figures behind both tools, see the 2026 Money Numbers hub. Then put the take-home number to work in the Budget Planner.

Frequently asked questions

2027 COLA Calculator

Enter your current monthly Social Security benefit to see your 2027 benefit at the announced 3.6% cost-of-living adjustment — your monthly and yearly increase, and an estimate of what reaches your bank account after the Medicare Part B premium.

Last updated: October 28, 2026

The 2027 Part B premium below is a PROJECTION — not the official figureThe $209.50 default is the standard premium projected in the 2026 Medicare Trustees Report, up from $202.90 in 2026. The official 2027 premium is expected from the Centers for Medicare & Medicaid Services (CMS) in November 2026. The 3.6% COLA itself was announced by the SSA on 14 October 2026.

Your numbers

Leave either premium at 0 if Part B is not deducted from your check. SSA rounds benefits down to the nearest dollar, so your official notice may differ by a few cents from this estimate.

Your 2027 benefit

—

your 2027 monthly benefit at +3.6% (before deductions)

—Monthly increase
—Yearly increase
—Net 2027 amount after Part B (PROJECTED premium)
—Net monthly gain vs. today, after the projected Part B rise
Worked exampleThe average retired worker's benefit of about $2,095 a month becomes about $2,170 in 2027 — up about $75 a month, or about $900 a year. If the projected $209.50 Part B premium holds (up $6.60 from $202.90), the net gain is about $68.40 a month instead.

Estimates only — education, not financial advice. The full story is in 2027 Social Security COLA: 3.6% — What Your New Check Really Is. Source: SSA press release, 14 October 2026.

Frequently asked questions

2026 Money Numbers: Tax Brackets, Standard Deductions, IRA & 401(k) Limits

The official federal figures that shape your 2026 paycheck, tax return, and retirement saving — in one place, each with its source named so you can verify it yourself.

Last updated: October 26, 2026 · By the DollarBrook Editorial Team

Every January, readers ask the same questions: What are this year's tax brackets? How much can I put in my IRA? DollarBrook checks these numbers against the IRS releases that set them and keeps them on this page. When the IRS publishes the 2027 figures, this page rolls forward — the date at the top always shows when it was last verified.

2026 standard deductions

Filing status2026 standard deduction
Single$16,100
Married filing jointly$32,200
Head of household$24,150

Source: IRS Revenue Procedure 2025-32. Additional amounts apply for taxpayers who are 65 or older or blind. See what the deduction does to your bill in the Federal Tax Estimator.

2026 federal income tax brackets

Brackets are marginal: each rate applies only to the income inside that slice, not to your whole income. The tables below show the top of each bracket (taxable income after deductions).

Single

RateTaxable income up to
10%$12,400
12%$50,400
22%$105,700
24%$201,775
32%$256,225
35%$640,600
37%Above $640,600

Married filing jointly

RateTaxable income up to
10%$24,800
12%$100,800
22%$211,400
24%$403,550
32%$512,450
35%$768,700
37%Above $768,700

Head of household

RateTaxable income up to
10%$17,700
12%$67,450
22%$105,700
24%$201,750
32%$256,200
35%$640,600
37%Above $640,600

Source: IRS Revenue Procedure 2025-32. Run your own income through these brackets with the Paycheck Calculator.

2026 IRA contribution limits

Age2026 IRA limit (Traditional + Roth combined)
Under 50$7,500
50 or older$8,600 (includes the $1,100 catch-up)

Source: IRS 2026 retirement-plan limit announcements (IRS.gov). You also cannot contribute more than your earned income. Which IRA fits you? Roth IRA vs. Traditional IRA.

2026 Roth IRA income phase-outs

Filing statusModified AGI phase-out range for direct Roth contributions
Single / head of household$153,000 – $168,000
Married filing jointly$242,000 – $252,000

Source: IRS 2026 IRA guidance (IRS.gov). Below the range you can contribute the full amount; inside it, a reduced amount; above it, no direct contribution.

2026 401(k) contribution limits

Who2026 employee contribution limit
Under 50$24,500
Age 50+ (regular catch-up +$8,000)$32,500
Ages 60–63 (“super catch-up” +$11,250, from the SECURE 2.0 Act)$35,750

Source: IRS 2026 retirement-plan limit announcements (IRS.gov). Employer contributions are on top of these employee limits. The strategy behind the numbers is in 401(k) Basics and the Employer Match — and you can project what maxing out becomes in the Retirement Calculator.

Deposit insurance: FDIC & NCUA coverage

InsurerCoverage
FDIC (banks)$250,000 per depositor, per insured bank, per ownership category
NCUA (credit unions)$250,000 per member, per insured credit union, per ownership category

Source: FDIC (FDIC.gov) and NCUA (NCUA.gov) deposit/share insurance rules. This is the protection behind the savings accounts in High-Yield Savings Accounts Explained and your emergency fund.

Frequently asked questions

Sources: Internal Revenue Service, Revenue Procedure 2025-32 (2026 tax brackets and standard deductions); IRS 2026 retirement-plan and IRA limit announcements (IRS.gov); FDIC deposit insurance coverage (FDIC.gov); NCUA share insurance (NCUA.gov). Figures are for the 2026 tax year and are educational, not tax advice.

Personal Finance Glossary: 6 Terms Worth Knowing Cold

Money writing is full of short words that hide big ideas. Here are the six terms DollarBrook readers ask about most — each in plain English, with a small example and the guide or calculator that puts it to work.

Last updated: October 26, 2026 · By the DollarBrook Editorial Team

APR (Annual Percentage Rate)

The yearly cost of borrowing, expressed as a percentage. On a credit card, the APR is the interest rate applied to balances you carry from month to month; on a loan it can also fold in certain fees. APR is the fastest way to compare how expensive two debts are.

Example: a $3,500 card balance at 24.99% APR accrues about $73 of interest in the first month alone. See your own numbers in the Credit Card Interest Calculator and the payoff plan in How to Pay Off Credit Card Debt.

APY (Annual Percentage Yield)

The yearly return on a savings account, including compounding — interest earning interest. Because every bank must quote APY the same way, it is the one number that lets you compare savings accounts fairly.

Example: $10,000 at 4.00% APY earns about $400 in a year; at 0.50% APY, about $50. The full explanation is in High-Yield Savings Accounts Explained, and the growth math is in the Compound Interest Calculator.

Roth IRA

An individual retirement account you fund with money that has already been taxed. In exchange, qualified withdrawals in retirement — contributions and decades of growth — come out completely tax-free. For 2026 you can contribute up to $7,500 if you are under 50 (income limits apply; see the 2026 Money Numbers hub).

Example: contribute $6,000 in your 20s, watch it grow to $18,000, and the whole $18,000 can be withdrawn tax-free in retirement if the rules are met. The side-by-side comparison is Roth IRA vs. Traditional IRA.

401(k)

A retirement plan offered through an employer. Contributions come straight out of your paycheck — pre-tax for a traditional 401(k), after-tax for a Roth 401(k) — and many employers match part of what you put in. For 2026, employees under 50 can contribute up to $24,500.

Example: earning $60,000 and contributing 6% ($3,600) with a 50% employer match adds $1,800 of employer money each year. How the match, vesting, and limits work: 401(k) Basics and the Employer Match and the Retirement Calculator.

Index fund

A mutual fund or ETF that simply copies a published market index — such as the S&P 500 — instead of paying managers to pick stocks. One purchase gives you a diversified slice of hundreds of companies at very low cost.

Example: $100 buys a fractional share of a total-market index fund, spreading that $100 across thousands of companies at once. The honest pros and cons are in Index Funds vs. Individual Stocks and How to Start Investing With $100.

Emergency fund

Cash set aside — usually in an insured high-yield savings account — to cover three to six months of essential expenses if income stops or a real emergency hits. It is insurance you pay to yourself, and it keeps surprises off high-interest credit cards.

Example: with $2,650 of monthly essentials, a six-month fund is $15,900; a starter goal of $1,000 covers most everyday surprises. Build yours with How to Build an Emergency Fund and the Emergency Fund Calculator.

Frequently asked questions

Topics: Every DollarBrook Guide & Calculator

Everything on DollarBrook, organized by the job it does — budgeting, debt, retirement, taxes, investing, and banking. Pick the topic that matches the question on your mind.

Last updated: October 29, 2026

Budgeting

Give every dollar a job and know where you stand.

Debt

Understand what borrowing costs and pay it off with a plan.

Retirement

Use tax-advantaged accounts and time to build future income.

Taxes

Know the brackets and limits that decide what you owe.

  • Federal Tax Estimator (2026) — estimate your federal income tax bracket by bracket, with refund or amount owed.
  • Paycheck Calculator — see federal tax and FICA taken out of each paycheck, for any pay schedule.
  • 2026 Money Numbers — brackets, standard deductions, and retirement limits for 2026, each with its IRS source.

Investing

Start small, diversify, and let compounding do the heavy lifting.

Banking

Keep everyday money safe, insured, and earning its keep.

Frequently asked questions

About DollarBrook

An independent personal finance publication for everyday Americans.

DollarBrook exists for one reason: most money advice online is either selling something or written for people who already have plenty. We write for everyone else — the teacher setting up a first budget, the parent comparing savings accounts, the new graduate staring at a first 401(k) enrollment form.

What we publish

Step-by-step guides and free calculators covering saving, budgeting, credit, debt payoff, banking, and long-term investing. Every guide is written in plain English, includes worked dollar examples, and names the primary source behind any official figure — usually IRS.gov, the Consumer Financial Protection Bureau (CFPB), or the Federal Reserve.

Editorial standards

  • Accuracy first. Tax limits, insurance rules, and consumer protections are verified against the issuing agency before publication and re-checked when agencies update them.
  • No sponsored picks. No bank, card issuer, or brokerage pays to appear in, or influence, a DollarBrook guide.
  • Uncertainty is labeled. Where a number is an assumption or an example, the page says so. We do not publish statistics we cannot source.
  • Plain English. If a term needs a definition, the guide defines it the first time it appears.

Fact-checking & corrections

Each article carries a “last updated” date. When a reader reports an error — or an agency changes a figure — we verify, correct the page, update the date, and describe the change in our response to the reader. To flag an error, email [email protected] with the page link and what looks wrong.

Who writes DollarBrook

Articles are researched and written by the DollarBrook Editorial Team and published under that byline. We are educators, not licensed financial advisors, and nothing on this site is personalized financial, tax, or legal advice. For decisions specific to your situation, consult a qualified professional. See our full disclaimer and editorial policy.

Editorial Policy

How DollarBrook research works, how we stay independent, and how the site earns money.

How we research

Every guide starts from primary sources: the Internal Revenue Service (IRS.gov) for tax and retirement-account rules, the Consumer Financial Protection Bureau (ConsumerFinance.gov) for consumer rights and product rules, the Federal Reserve (FederalReserve.gov) for banking and credit data, and the FDIC and NCUA for deposit insurance. Secondary reporting may point us to a question, but a figure only appears on DollarBrook when we can trace it to a source we trust — and the article names that source.

No sponsored picks, ever

DollarBrook does not accept payment to write, rank, or recommend any financial product. We generally do not name specific banks, credit cards, or brokerages as “the best,” because the honest answer depends on your fees, habits, and eligibility — so our guides teach comparison criteria instead.

How the site earns money

DollarBrook is free to read and is supported by advertising displayed on the site. If we ever add affiliate relationships, any page containing an affiliate link will disclose it at the top of the page, and affiliate revenue will never change a recommendation. Advertising never influences what we write or the figures we publish.

Updates and corrections

Finance rules change — contribution limits adjust, laws pass, agencies revise guidance. We review time-sensitive guides at least annually, update figures when official sources change them, and refresh the “last updated” date on every substantive edit. Factual errors reported by readers are verified and corrected promptly.

AI and authorship disclosure

DollarBrook’s editorial team uses research and drafting tools, but every published figure is verified by a human editor against the cited primary source before publication, and the byline — DollarBrook Editorial Team — stands behind the result.

Contact us

Questions, corrections, and feedback are welcome. We read everything; please don’t send account numbers, passwords, or other sensitive information — we can’t help with individual accounts and will never ask for them.

Email: [email protected]

This form opens your own email app with the message addressed to [email protected] — nothing is sent until you press send there.

Privacy Policy

Last updated: October 25, 2026

DollarBrook is a static educational website. This policy explains, plainly, what information is and is not collected when you visit.

Calculators and tools

Our calculators run entirely in your browser. The numbers you enter are never transmitted to us or stored on any server. The admin page’s draft feature stores drafts only in your own browser’s local storage, on your device, under your control.

What we don’t collect

We do not operate user accounts, and never ask for financial account credentials, Social Security numbers, or banking details. Our homepage shows a newsletter signup form; until our email service is connected, that form does not collect, transmit, or store any email address. Please never send them by email.

Advertising and cookies

DollarBrook is supported by advertising. When ads are served, third-party advertising partners (such as Google AdSense) may use cookies to serve ads based on your prior visits to this and other websites. You can opt out of personalized advertising via Google’s Ads Settings (adssettings.google.com) and learn more at policies.google.com/technologies/ads. Advertising partners’ cookie use is governed by their own privacy policies.

Analytics

If aggregate, privacy-respecting analytics are used, they measure page popularity in totals (for example, how many people read a guide) — not to build profiles of individual readers.

External links

We link to official sources such as IRS.gov and ConsumerFinance.gov. We are not responsible for the privacy practices of other websites.

Changes & contact

If this policy changes, the updated version will be posted here with a new date. Questions: [email protected].

Terms of Use

Last updated: October 25, 2026

By using DollarBrook, you agree to these terms.

Educational content only

All content and calculators on DollarBrook are provided for general education. They are not financial, investment, tax, or legal advice, and they do not create an advisor–client relationship. See the disclaimer.

Accuracy

We work hard to keep figures accurate and current, but laws, limits, and rates change, and errors can occur. Verify important figures with the official source (such as IRS.gov) or a qualified professional before acting.

Acceptable use

You may read, share links to, and quote brief excerpts of DollarBrook content with attribution. You may not republish full articles, scrape the site at scale, or misrepresent DollarBrook content as personalized advice.

Liability

DollarBrook is provided “as is.” To the fullest extent permitted by law, we are not liable for decisions made in reliance on this educational content.

Changes

These terms may be updated; the current version always lives at this page with its date.

Disclaimer

Last updated: October 25, 2026

DollarBrook provides financial education, not financial advice. Nothing on this website — articles, calculators, examples, or answers — is a recommendation to buy, sell, or hold any security or product, or personalized advice about your taxes, investments, insurance, or legal situation.

Worked examples use round, clearly labeled assumptions so the math is easy to follow. They are illustrations, not predictions or promises. Investment returns are never guaranteed, and past performance does not predict future results.

Official figures (such as IRS contribution limits) are published for the year stated and can change. Always confirm current rules at IRS.gov, ConsumerFinance.gov, or with a qualified, licensed professional who knows your full situation before making a major financial decision.

Admin dashboard

For the DollarBrook site manager: draft new articles here, preview them, and export them for publishing.