Use this free marriage tax calculator to compare two single federal tax estimates with a married filing jointly estimate using 2026 ordinary-income brackets.
$90,000 + $70,000 compared with joint filing
This excludes married filing separately, state tax, payroll tax, capital gains, most credits, dependents, phaseouts, itemized deduction limits, AMT, community-property rules, benefits, and filing advice.
Compare whether the entered incomes show a rough marriage bonus or penalty.
Test how custom deductions or joint credits affect the simple comparison.
See taxable income and marginal bracket before discussing tax planning.
Use as an education screen, not as tax filing guidance.
$17,540 joint tax and $17,540 as two single estimates, so $0 difference
About $5,384 lower tax as married filing jointly in this simple model
About $1,858 lower tax after the entered deduction and credit assumptions
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Plain-language answers about when to use the estimate, what your numbers mean, what is left out, and how privacy works.
Use it when you want to test the exact inputs on this page: Compare whether the entered incomes show a rough marriage bonus or penalty. Test how custom deductions or joint credits affect the simple comparison. The result is a check against your assumptions, not proof that a lender, tax app, broker, platform, or provider will use the same number.
Person 1 income means ordinary income for the first person before the deduction entered on this page. Person 2 income means ordinary income for the second person before the deduction entered on this page. Single deductions means optional custom deductions for the two separate single estimates. Leave blank to use the 2026 single standard deduction. Joint deduction means optional custom deduction for the married filing jointly estimate. Leave blank to use the 2026 joint standard deduction. Joint credits means credits you want to subtract from the joint federal estimate only in this simple comparison.
On this page, a marriage bonus means the married filing jointly estimate is lower than two single estimates. A penalty means the joint estimate is higher. It is only a simplified federal comparison, not a filing recommendation.
For that example, the 2026 married filing jointly standard deduction and bracket thresholds line up closely with two single estimates. The calculator gets $17,540 either way, so the difference is $0.
No. It compares two single estimates with one married filing jointly estimate. Married filing separately has its own limits, credits, state rules, and community-property issues, so this page does not choose a filing status for you.
In plain language: The calculator estimates each person as a single filer, estimates the combined income as married filing jointly, then subtracts the two-single total from the joint total. $90,000 plus $70,000 gives $17,540 as two single estimates and $17,540 as married filing jointly, so the simplified difference is $0. $180,000 plus $25,000 gives about a $5,384 lower joint estimate.
A negative marriage difference means the joint estimate is lower than the two-single estimate. A positive difference means the joint estimate is higher. A $0 difference means this simple 2026 bracket-and-deduction model did not find a bonus or penalty.
This is a simplified 2026 federal ordinary-income estimate. It does not include married filing separately, state tax, payroll tax, capital gains, phaseouts, itemized deduction limits, AMT, most credits, dependents, community-property rules, benefits, student-loan rules, or filing advice. Use IRS filing-status rules, current tax forms, and a qualified tax professional for filing decisions. This page is only a quick federal ordinary-income comparison.
Check both incomes, whether deductions are blank or custom, and whether credits belong in the joint-credit field. Then remember that state tax, payroll tax, dependents, phaseouts, benefits, and married filing separately can change the real answer.
No. It only estimates 2026 federal ordinary income tax. State income tax, Social Security tax, Medicare tax, local tax, and benefit rules can change the real cost.
Yes. Dependents, education credits, child tax credit rules, earned income credit, phaseouts, and other credits can change the real result. This calculator only has one simple joint-credit field.
No. Use it to understand one tax estimate. Marriage affects legal, benefit, state, household, insurance, debt, and planning questions that a calculator like this cannot decide.
No. The calculator runs in your browser tab. Recent answers stay only on the page while you use it, and they are not sent to a server.