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Does marrying cost you, or pay you?
Nearly everyone has heard of the marriage penalty. Far fewer know it is the unusual outcome. What decides it is not how much a couple earns — it is how evenly the money splits between them. Two people earning the same amount can pay more together than apart. One earner with a partner at home almost always pays less.
Filing jointly replaces two single returns with one, and the joint brackets and standard deduction are not exactly double the single ones across the whole schedule. Where they fall short, a second similar income stacks onto the first and the household pays a penalty; where one income sits alone against two people's worth of shelter, the household receives a bonus. Filing status changes the income tax and the additional-Medicare threshold; it does not change Social Security or ordinary Medicare, which are charged on each person's own wages.
Marrying, in money
marriage penalty| Tax | Two singles | Married, joint |
|---|---|---|
| Federal income tax | $13,140 | $13,140 |
| State and local | $2,417 | $3,134 |
| Social Security and Medicare | $10,710 | $10,710 |
Two similar incomes are what produce a penalty: joint brackets are not quite twice the single ones at the top, so the second income stacks on the first. Payroll tax barely moves, because Social Security and Medicare are charged on each person’s own wages whatever the return says. Married filing separately is a third option and is not modeled here.
Same household income. Only the split changes.
Every row below is a couple earning the same total. The only thing that changes is who earns it — and the further apart the two incomes are, the better marrying gets. In Ohio, an evenly-split pair are $716.37 apart. With one earner carrying the whole amount, marrying is worth $9,194.00 a year.
Household income is held at $140,000 in a state with no income tax, so the figures isolate the federal effect. The monotonic rise from an even split to a single earner is the whole mechanism.
| Split | Higher earner | Lower earner | Marrying is worth |
|---|---|---|---|
| 50/50 | $70,000 | $70,000 | $0 |
| 60/40 | $84,000 | $56,000 | $1,050 |
| 70/30 | $98,000 | $42,000 | $2,450 |
| 80/20 | $112,000 | $28,000 | $3,860 |
| 90/10 | $126,000 | $14,000 | $5,834 |
| 100/0 | $140,000 | $0 | $9,194 |
What filing status is worth
A $75,000 Texas salary
| Single | $61,593 |
|---|---|
| Married filing jointly | $64,623 |
| Married filing separately | $61,593 |
| Head of household | $63,515 |
What each status computes to at this income. Which one you may use depends on your household.
Where the money goes
A $75,000 Texas salary
- Federal income tax$7,670
- Social Security and Medicare$5,738
- Yours$61,593
| Federal income tax10.23% | $7,670 |
|---|---|
| Social Security and Medicare7.65% | $5,738 |
| Yours82.12% | $61,593 |
An evenly-split couple, in every state
This is the hardest case for marriage — two people earning the same. Even so, 5 states still leave the couple better off married. Kansas is the friendliest at $57.47;District of Columbia the least, at -$1,356.00.
Each row splits $140,000 evenly and compares two single returns against one joint return, including state and any modeled local income tax. States whose brackets double cleanly from single to joint show the federal effect alone; those whose do not add their own.
| State | Marrying is worth |
|---|---|
| Kansas | $57 |
| Maine | $0.47 |
| Oregon | $0.43 |
| Nebraska | $0.01 |
| North Carolina | $0.01 |
| Alabama | $0 |
| Alaska | $0 |
| Arizona | $0 |
| California | $0 |
| Colorado | $0 |
| Connecticut | $0 |
| Florida | $0 |
| Georgia | $0 |
| Hawaii | $0 |
| Idaho | $0 |
| Indiana | $0 |
| Iowa | $0 |
| Louisiana | $0 |
| Michigan | $0 |
| Mississippi | $0 |
| Montana | $0 |
| Nevada | $0 |
| New Hampshire | $0 |
| Oklahoma | $0 |
| Pennsylvania | $0 |
| South Dakota | $0 |
| Tennessee | $0 |
| Texas | $0 |
| Utah | $0 |
| Washington | $0 |
| Wyoming | $0 |
| Illinois | -$0.01 |
| Maryland | -$52 |
| Massachusetts | -$100 |
| Kentucky | -$118 |
| Missouri | -$181 |
| New York | -$210 |
| New Jersey | -$210 |
| New Mexico | -$223 |
| Virginia | -$257 |
| Minnesota | -$260 |
| North Dakota | -$312 |
| Rhode Island | -$355 |
| Arkansas | -$367 |
| Vermont | -$530 |
| Ohio | -$716 |
| West Virginia | -$797 |
| South Carolina | -$966 |
| Delaware | -$1,016 |
| Wisconsin | -$1,030 |
| District of Columbia | -$1,356 |
Federal figures from IRS Revenue Procedure schedules for 2026; state figures from each state's own rate schedule (see any state page for its citation). Married filing separately is a third arrangement with its own eligibility rules and is not modeled here.