How Much Tax Is on a Dollar: Income, Payroll, and Sales

How much tax is on a dollar depends on what kind of dollar it is. A dollar of wages loses 7.65% to payroll tax before any income tax applies, then anywhere from 0% to 37% to federal income tax depending on your total earnings, plus up to roughly 13% more in state income tax. A dollar you spend can lose up to about 10% to combined state and local sales tax. A dollar from investments held over a year is taxed at its own lower schedule. The exact bite depends on how much you earn, how you earn it, and where you live and shop.

Federal Income Tax on Each Earned Dollar

Federal income tax is progressive. Your income is split into segments, and each segment is taxed at a higher rate as earnings grow. Before any rate applies, you subtract the standard deduction: $16,100 for a single filer or $32,200 for a married couple filing jointly in 2026. Dollars below that threshold owe zero federal income tax.¹

For a single filer in 2026, the seven brackets work like this:¹

10% on taxable income up to $12,400
12% from $12,400 to $50,400
22% from $50,400 to $105,700
24% from $105,700 to $201,775
32% from $201,775 to $256,225
35% from $256,225 to $640,600
37% over $640,600

Married couples filing jointly get wider brackets. The 10% band runs to $24,800, and the top 37% rate does not begin until income exceeds $768,700.¹

Your Marginal Rate Is Not Your Average Rate

The rate on your last dollar earned is your marginal rate. The average across all your income after deductions is your effective rate. Take a single filer with $60,000 in taxable income. That person is in the 22% bracket, but only the dollars between $50,400 and $60,000 are taxed at 22%. The first $12,400 is taxed at 10%, and the next slice at 12%. The effective rate ends up well below 22%. Earning one more dollar never causes your entire tax bill to jump into a higher bracket.

These rates reflect the One, Big, Beautiful Bill Act, signed on July 4, 2025, which extended the individual rates set by the 2017 Tax Cuts and Jobs Act. Without the extension, the 12% bracket would have moved to 15%, and the top rate would have gone from 37% to 39.6%.¹

Payroll Tax Starts With Your First Dollar

Wages face a second federal tax that has no standard deduction. Under the Federal Insurance Contributions Act, your employer withholds 6.2% for Social Security and 1.45% for Medicare from every paycheck, a combined 7.65% starting with dollar one.²

The Social Security portion stops at a wage base. In 2026, only the first $184,500 of wages is subject to the 6.2% Social Security tax; dollars above that escape it for the rest of the year. Medicare has no cap. If your wages exceed $200,000 in a calendar year, an additional 0.9% Medicare tax applies to each dollar above that threshold.²

Your employer pays a matching 6.2% and 1.45% on top of what comes out of your check. That match does not reduce your paycheck, but economists generally treat it as part of what employing you costs.²

Self-Employed? You Pay Both Halves

Freelancers, independent contractors, and sole proprietors owe both the employee and employer sides of FICA. The combined self-employment tax rate is 15.3%: 12.4% for Social Security and 2.9% for Medicare.³

The $184,500 Social Security cap still applies, and the 0.9% additional Medicare tax still hits self-employment income above $200,000.⁴ You can deduct half of your self-employment tax when calculating adjusted gross income, which lowers what income tax is figured on, though it does not lower the self-employment tax itself.⁵

Investment Dollars Follow Different Rules

A dollar of profit from selling something you owned for a year or less is a short-term capital gain, taxed at the same ordinary income rates listed above.⁶

Hold the asset longer than a year and the gain qualifies for long-term rates. For a single filer in 2026:⁷

0% on taxable income up to $49,450
15% from $49,450 to $545,500
20% over $545,500

For married couples filing jointly, the 0% rate covers taxable income up to $98,900, and the 20% rate begins at $613,700.⁷

Higher earners can owe a Net Investment Income Tax of 3.8% on investment income when modified adjusted gross income tops $200,000 for single filers or $250,000 for joint filers. The surtax applies to the lesser of your net investment income or the amount your income exceeds those thresholds.⁸

State and Local Income Tax Stacks on Top

Where you live adds another layer. Eight states levy no individual income tax at all. In the rest, top marginal rates reach as high as roughly 13%.⁹ Some states apply a flat rate to every taxable dollar; others use progressive brackets like the federal system.

Certain counties and municipalities add a local income tax on top, usually withheld through payroll and typically running from under 1% to a few percentage points. Live in one state and work in another and you could owe both, though about a dozen states and the District of Columbia have reciprocity agreements that limit you to your state of residence, and most states offer a credit for taxes paid to another state to prevent the same dollar from being taxed twice.

Sales Tax on Each Dollar You Spend

After income and payroll taxes reduce what you take home, sales tax chips away at what your remaining dollars actually buy. Five states — Alaska, Delaware, Montana, New Hampshire, and Oregon — have no statewide sales tax. Where sales tax does apply, the combined state and local rate runs from under 2% to about 10.11% at the top.¹⁰

Not every purchase is taxed equally. Many states exempt groceries, prescription medications, or both. Alcohol, tobacco, and gasoline carry excise taxes that stack on top of the general rate.

Use Tax When the Seller Does Not Collect

Buy something from an out-of-state or online seller that does not collect your state’s sales tax and you generally owe use tax directly to your state, usually at the same rate. Since the Supreme Court’s 2018 decision in South Dakota v. Wayfair, most states require large online retailers to collect and remit sales tax, so fewer online purchases go untaxed. Smaller sellers may still not collect in every state, and reporting the difference falls on you as the buyer. Many state income tax returns include a line for use tax owed.

What Underreporting Costs

Skipping tax on dollars you should have reported has its own price. If the IRS finds a substantial understatement, generally meaning it exceeds the greater of 10% of the correct tax or $5,000, it can add a penalty of 20% of the underpaid amount.¹¹ Deliberate evasion is a felony, punishable by a fine of up to $100,000 (or $500,000 for a corporation) and up to five years in prison.¹²

1
Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026
2
Internal Revenue Service. Topic No. 751, Social Security and Medicare Withholding Rates
3
Internal Revenue Service. Self-Employment Tax (Social Security and Medicare Taxes)
4
Social Security Administration. 2026 Cost-of-Living Adjustment (COLA) Fact Sheet
5
Internal Revenue Service. Form 1040-ES, Estimated Tax for Individuals – 2026
6
Internal Revenue Service. Topic No. 409, Capital Gains and Losses
7
Tax Foundation. 2026 Tax Brackets and Federal Income Tax Rates
8
Internal Revenue Service. Topic No. 559, Net Investment Income Tax
9
Tax Foundation. State Individual Income Tax Rates and Brackets, 2026
10
Tax Foundation. State and Local Sales Tax Rates, 2026
11
Office of the Law Revision Counsel. 26 USC 6662 – Imposition of Accuracy-Related Penalty on Underpayments
12
Office of the Law Revision Counsel. 26 USC 7201 – Attempt to Evade or Defeat Tax