Rex says
Money math without the spreadsheet headache. Plug in your numbers and I'll show you exactly where the dollars land.
Try a scenario
Click to load — tweak from there.Inputs
Result
Your marginal bracket
22%
Room left in this bracket
$8,350
Effective tax rate
16.65%
Federal tax owed
$15,814
Your raise, after federal tax
$7,767
Psst — share this and help Rex grow
One click, a permanent link with your numbers baked in.
How to use this
- 1Enter taxable income ($).
- 2Enter filing status.
- 3Enter raise you are considering ($).
- 4Read your your marginal bracket on the right — it updates as you type.
- 5Hit Share to keep the scenario or send it to someone.
About this calculator
Moving into a higher bracket does not tax your whole income at the higher rate — only the dollars above the threshold. This shows your bracket, the room left in it, and the after-tax value of your next raise.
Worked example
Using the values the calculator loads with:
Inputs
- Taxable income: 95000 $
- Filing status: Single
- Raise you are considering: 10000 $
Results
- Your marginal bracket: 22%
- Room left in this bracket: $8,350.00
- Effective tax rate: 16.65%
- Federal tax owed: $15,814.00
- Your raise, after federal tax: $7,767.00
What each field means
Inputs
- Taxable income ($)
- The taxable income used in the calculation, measured in $. Starts at 95000 $ so you have a working example on load.
- Filing status
- Pick the option that matches your situation — the maths changes per option. Choices: Single, Married filing jointly.
- Raise you are considering ($)
- The raise you are considering used in the calculation, measured in $. Starts at 10000 $ so you have a working example on load.
Results
- Your marginal bracket
- Returned as a percentage and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Room left in this bracket
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Effective tax rate
- Returned as a percentage. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Federal tax owed
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Your raise, after federal tax
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
FAQ
How does the tax bracket calculator work?
Moving into a higher bracket does not tax your whole income at the higher rate — only the dollars above the threshold. This shows your bracket, the room left in it, and the after-tax value of your next raise. The underlying maths is: Brackets are applied progressively; the marginal rate applies only to income above each threshold.
What do I need to enter?
3 values: taxable income, filing status, and raise you are considering. Each field starts with a sensible default, so you can change one number at a time and watch the result move.
What does the your marginal bracket result mean?
It is returned as a percentage and updates live as you edit the inputs, so you can compare two or three versions of a scenario in a few seconds.
Is this calculator free, and do I need an account?
Yes, it's free, and no account is required. Nothing you type is stored on our servers — the maths runs entirely in your browser.
How accurate is the result?
It applies the standard formula exactly, so the arithmetic is precise. Results are estimates before tax, fees, and inflation unless an input explicitly covers them.
Who is this tool for?
It's built for anyone comparing money scenarios before committing — budgeting a payment, sanity-checking a quote, or seeing what a change in rate or term actually costs.
Accuracy and limitations
- Results are estimates before tax, fees, and inflation unless an input explicitly covers them.
- Rates are treated as fixed for the whole period — variable-rate products will drift from this projection.
- This is educational maths, not financial advice. Check anything contractual with the lender or your accountant.
Related tools
Cite this calculator
Writing about this topic? Grab a citation — every link helps keep these tools free.
RevenueLab. (2026). Tax Bracket Calculator. Retrieved from https://www.revenuelab.fyi/toolbox/tax-bracket
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/tax-bracket" target="_blank" rel="noopener">Tax Bracket Calculator — RevenueLab</a> (2026).</p>
Source: [Tax Bracket Calculator — RevenueLab](https://www.revenuelab.fyi/toolbox/tax-bracket) (2026).