Tax Calculator
Estimate your federal income tax based on your annual income and filing status (US brackets).
Tax Calculator
Calculate your estimated income tax instantly.
Estimated Tax Owed
0What This Calculator Estimates
Income tax isn't a single percentage applied to everything you earn. It's calculated in layers, and understanding those layers is what separates a useful estimate from a badly wrong one.
Enter your income and filing status, and you'll see an estimate of what you owe, your effective rate, and what's left over. It's a planning tool rather than a filing tool — real returns involve deductions, credits, and circumstances no general calculator can capture.
How Progressive Tax Actually Works
This is the single most misunderstood part of income tax. Moving into a higher bracket does not mean your entire income is taxed at that higher rate — only the portion above the threshold is.
| Portion of income | Rate | Tax on that slice |
|---|---|---|
| First 11,000 | 10% | 1,100 |
| Next 34,000 | 12% | 4,080 |
| Remaining 15,000 | 22% | 3,300 |
| Total | — | 8,480 |
Pro Tip: The top bracket here is 22%, but the effective rate is 8,480 ÷ 60,000, or roughly 14%. A raise never leaves you worse off — only the additional dollars are taxed at the higher rate. Figures shown are illustrative; check current-year brackets before relying on them.
Marginal Rate and Effective Rate
Marginal Rate: The rate applied to your next dollar of income. This is what matters when deciding whether to take on extra work, contribute to a retirement account, or realise a gain.
Effective Rate: Total tax divided by total income — what you actually paid overall. Always lower than your marginal rate, and the honest figure for comparing years or households.
People quote their bracket when asked what they pay, which consistently overstates it. The effective rate is the number that reflects reality.
From Gross Income to Taxable Income
Tax isn't calculated on what you earn. It's calculated on what's left after subtracting the amounts the code allows you to exclude.
Taxable Income = Gross Income − Adjustments − Deduction
Tax Owed = Tax on Taxable Income − Credits
- 1. Adjustments: Certain contributions and expenses subtracted before the deduction, sometimes called above-the-line items.
- 2. Deduction: Either the standard deduction or your itemised total, whichever is larger. Most filers take the standard.
- 3. Credits: Subtracted from the tax itself, not from income. Far more valuable dollar for dollar.
Why Credits Beat Deductions
The distinction is worth real money and is routinely confused. A deduction reduces the income being taxed; a credit reduces the tax bill directly.
| 1,000 Deduction | 1,000 Credit | |
|---|---|---|
| What it reduces | Taxable income | Tax owed |
| Worth at 12% bracket | 120 | 1,000 |
| Worth at 22% bracket | 220 | 1,000 |
| Worth at 32% bracket | 320 | 1,000 |
A deduction's value depends on your bracket. A credit is worth its face value to everyone, which is why credits are the more powerful of the two by a wide margin.
Filing Status Changes the Thresholds
Your status determines both the bracket boundaries and the standard deduction, so two people with identical income can owe very different amounts.
- Single — the default for unmarried filers without dependants.
- Married filing jointly — combined income on one return, with wider brackets. Usually the better outcome for couples.
- Married filing separately — separate returns. Occasionally advantageous, but disqualifies several credits.
- Head of household — for unmarried filers supporting a qualifying dependant. More favourable than filing single.
What a General Estimate Leaves Out
A calculator working from income and filing status alone can't see the details that shift most real bills:
- State and local taxes — rates vary enormously, and several states levy none at all.
- Payroll taxes — Social Security and Medicare are withheld separately from income tax.
- Self-employment obligations — the self-employed cover both halves of payroll tax and typically pay quarterly.
- Investment income — long-term capital gains and qualified dividends are taxed on a separate schedule.
- Credits you qualify for — child, education, and income-based credits can substantially reduce or eliminate a bill.
- Retirement contributions — pre-tax contributions lower taxable income directly.
Frequently Asked Questions
No. Only the income above the threshold is taxed at the higher rate — everything below it stays exactly where it was. A raise always leaves you with more after tax. The one exception is income-tested benefits or credits that phase out, which is a separate mechanism from tax brackets themselves.
Your marginal rate applies to the next dollar you earn. Your effective rate is total tax divided by total income. The effective rate is always lower, and it's the accurate answer to "what percentage do you pay in tax?"
Take whichever is larger. Itemising only helps when your qualifying expenses — mortgage interest, state taxes, charitable giving, certain medical costs — exceed the standard deduction. Since the standard deduction was raised substantially, most filers now take it.
A refund means you overpaid through withholding during the year. It isn't a bonus — it's your own money returned without interest. A large refund suggests adjusting your withholding so you keep more each month instead.
No. Payroll taxes are calculated separately from income tax and withheld at their own rates. Self-employed filers pay both the employee and employer portions, which is a significant additional cost worth planning for.
Maximise pre-tax retirement contributions, use health savings accounts if eligible, claim every credit you qualify for, and time deductible expenses sensibly across tax years. For anything involving business income or investments, professional advice usually pays for itself.
It's a general approximation based on federal brackets and a standard deduction. It excludes state tax, payroll tax, credits, and itemised deductions. Treat it as a planning figure and verify against current official guidance or a tax professional before making decisions.