Almost everyone misreads their tax rate. They hear 'you're in the 22% bracket' and assume 22% of their income is gone. It isn't — not even close. This calculator shows your effective rate (the share of your income that actually goes to federal tax) right next to your marginal rate (your top bracket), and a band-by-band breakdown that explains the gap. Understanding the difference changes how you think about raises, bonuses, deductions, and whether a 'bracket jump' is worth fearing.

Brackets are marginal, not total

The single most important fact about U.S. income tax: each bracket rate applies only to the income inside that band, never to your whole income. For a 2026 single filer, the first $12,400 of taxable income is taxed at 10%, the next slice up to $50,400 at 12%, the next up to $105,700 at 22%, and so on. If your taxable income is $58,900, only the $8,500 above $50,400 is taxed at 22% — everything below keeps its lower rate. That is why being 'in the 22% bracket' produces an effective rate closer to 10%.

How to calculate your effective rate

Your effective rate is simply total tax divided by income. The calculator does it two ways: federal tax ÷ gross income (your effective federal rate) and federal tax ÷ taxable income (the rate on income after deductions). Both are useful — the first tells you the share of every dollar you earn that goes to federal tax; the second isolates the rate on the income that is actually taxed. Add a state rate and FICA and you get your all-in effective rate, the truest picture of what you keep.

The bracket myth: will a raise cost me money?

The most persistent tax myth is that a raise can push you into a higher bracket and leave you with less money. Under a progressive system this is impossible. Only the income above the new bracket's threshold is taxed at the higher rate; every dollar below it keeps its lower rate. A $1,000 raise that crosses into the 24% band costs you $240 on that $1,000 — you still keep $760. Your marginal rate rises, your effective rate ticks up slightly, and your take-home pay always increases. (One real exception: raises can phase out income-tested credits or benefits, which is a separate effect from the tax brackets themselves.)

Marginal for decisions, effective for budgeting

Use the right rate for the right job. When you are deciding whether to take a side gig, contribute to a traditional vs Roth account, or harvest a capital gain, the marginal rate is what matters — it tells you the tax on the next dollar. When you are budgeting, comparing job offers, or measuring your tax burden year over year, the effective rate is the honest number. Confusing the two leads people to overestimate their tax burden and to make fear-based decisions about raises and bonuses.

What this calculator does and doesn't model

This tool applies the dated federal brackets and standard deduction, an optional flat state rate, and optional FICA. It is a clear, accurate model of how marginal and effective rates relate — but it is a simplification of a full return. It does not model tax credits (child tax credit, EITC, education credits), the Qualified Business Income deduction, the Alternative Minimum Tax, the Net Investment Income Tax, capital-gains rates, or each state's actual bracket schedule. Treat the result as a strong estimate of your income-tax rate, and confirm your final liability with the IRS or a qualified tax professional.