Marriage Tax Calculator
See whether marriage raises or lowers your combined federal income tax by comparing married-filing-jointly against two single returns on the 2024 brackets.
Marriage Tax Calculator
Compares 2024 US federal income tax: married filing jointly vs. two single filers. Uses standard deductions.
| Filing scenario | Taxable income | Federal tax |
|---|
| Spouse A (single) | - | - |
| Spouse B (single) | - | - |
| Married filing jointly | - | - |
Estimate only. Uses 2024 federal brackets and standard deductions ($14,600 single / $29,200 joint); ignores credits, state tax, FICA, capital-gains rates, phaseouts, and dependents. Not tax advice.
Example
Two earners each making $120,000 (standard deduction). As two singles, each has $105,400 taxable and owes about $18,876, totaling $37,752. Filing jointly on $210,800 taxable, they owe about $37,752 — essentially neutral. But if both earned $400,000, two singles owe ~$210,530 while joint owes ~$211,322, a $792 marriage penalty caused by the top brackets compressing for joint filers.
How it works
Enter each spouse's gross income; the tool applies 2024 standard deductions and tax brackets to compute tax as two singles versus filing jointly. The difference is your marriage penalty (positive) or bonus (negative).
Good to know
The Marriage Tax Calculator estimates how getting married changes a couple's combined US federal income tax by running two side-by-side scenarios: each partner filing as a single taxpayer, versus the couple filing one married-filing-jointly return. You enter both annual incomes, pick the standard or itemized deduction, and it applies the 2024 brackets to both paths and reports the dollar gap. It is built for engaged or newly married couples, people weighing a year-end wedding date, and anyone curious whether their household carries a "marriage penalty" or enjoys a "marriage bonus."
You'd typically reach for it when two earners are deciding how marriage affects their take-home pay, or when comparing a December versus January wedding to see which tax year the change lands in. It is also handy as a quick sanity check before a planning conversation: run your real numbers, then run a few hypotheticals (a raise, a spouse leaving work) to see how the verdict shifts as the income gap between partners widens or narrows.
Read the headline verdict together with the bar chart and table. A result labeled "Marriage penalty" with a positive figure means the joint return costs more than two single returns; a "Marriage bonus" with a negative figure means it costs less. The table breaks out taxable income and tax for each spouse-as-single and for the joint return, so you can see exactly where the difference comes from, and the effective rate shows the joint tax as a share of combined income.
One practical caveat: this is a federal-bracket-and-standard-deduction estimate only. It deliberately ignores state income tax, FICA and Medicare, the child and earned income credits, capital-gains and qualified-dividend rates, retirement-account deductions, and phaseouts, any of which can flip a small penalty into a bonus or the reverse. Treat the output as a directional comparison, and if you itemize, enter the full household itemized total so the joint and single scenarios are measured on the same basis.
Frequently asked questions
What causes a marriage penalty vs. a marriage bonus?
A bonus happens when spouses earn very different amounts, because the lower earner's income fills the joint return's wide lower brackets at low rates. A penalty appears when two high, similar incomes combine and push the couple into the 35%/37% brackets sooner than two separate single returns would.
Why might this differ from my actual tax bill?
This estimate uses only 2024 brackets and the standard deduction. It excludes state taxes, FICA/Medicare, the child and earned income credits, capital-gains and qualified-dividend rates, IRA/401(k) deductions, and income-based phaseouts — all of which can shift the penalty or bonus significantly.
Is my data uploaded anywhere?
No — this calculator runs entirely in your browser; nothing is uploaded.
Is this financial advice?
No. These are educational estimates — consult a qualified financial professional before making decisions.
People also ask
Does getting married raise or lower your taxes?
It depends on the spouses' incomes. Couples where one partner earns much more than the other often see a tax decrease (a marriage bonus), while two high, similar incomes can produce an increase (a marriage penalty) because the top joint brackets kick in sooner than for two separate single filers.
What is the marriage penalty in the US?
The marriage penalty is when a married couple pays more combined federal income tax filing jointly than they would have as two single filers. It mainly affects two-earner couples with high, comparable incomes whose combined income reaches the 35% and 37% brackets faster on a joint return.
What is a marriage bonus?
A marriage bonus is when filing jointly results in lower combined tax than two single returns. It commonly occurs when one spouse earns significantly more than the other, since the lower earner's income fills the joint return's wider low-rate brackets.
Is it better to file jointly or separately when married?
Most married couples pay less filing jointly than married filing separately, but the right choice varies with deductions, credits, and individual circumstances. This calculator compares joint filing to two single returns, not to married filing separately.
What are the 2024 federal income tax brackets for married filing jointly?
For 2024, joint brackets run 10% up to $23,200, 12% to $94,300, 22% to $201,050, 24% to $383,900, 32% to $487,450, 35% to $731,200, and 37% above that, applied to taxable income after deductions.
What is the 2024 standard deduction for married couples?
The 2024 standard deduction is $29,200 for married filing jointly and $14,600 for a single filer. This calculator subtracts those amounts before applying the brackets unless you switch to an itemized total.
Does the date of your wedding affect your taxes?
Yes. Your marital status for the entire tax year is generally determined by your status on December 31, so a wedding before year-end means you file as married for that whole year, while a wedding on or after January 1 keeps that year as single filing.
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