Marriage penalty or bonus on $1M combined?
On $1,000,000 combined, split evenly, filing jointly costs about $3,983 a year MORE than filing as two singles. That is the marriage penalty. It exists because the 35% bracket is the first one that is not doubled for joint filers, so it reaches only large and similarly sized incomes.
The phrase everyone knows is "the marriage penalty", and for most couples it is the wrong way round. Below roughly $1,000,000 of combined income there is no penalty at any split: an even split comes out level and every uneven split saves money. Which you get is decided by how the income is divided between you, not by how much of it there is.
Here is why. The married-filing-jointly brackets are exactly double the single brackets through the 22% band. If one partner earns much more than the other, the higher earner's top dollars drop into the lower brackets the other partner was not using, and the couple's total falls. If both earn about the same, there is nothing to shift and the doubling gives you nothing.
At $1,000,000 split evenly, that means $500,000 and $500,000. Filing separately as two single people the federal bill is $276,268. Filing jointly it is $280,251. Marrying costs $3,983 more.
The penalty is real, and it is far narrower than its reputation. The joint brackets are exactly double the single ones all the way through the 32% band, so up to roughly $1,000,000 of combined income an even split is a wash and every uneven split is a bonus. The 35% band is the first that is not doubled: it starts at $640,600 for a single filer and $768,700 jointly rather than $1,281,200. That gap is the entire penalty, it only bites two large and similar incomes, and it caps at about $10,251 a year.
One thing this does not change: payroll tax. Social Security and Medicare are charged per worker on wages, so filing status does not affect them at all. The Additional Medicare threshold is the exception worth knowing, because the joint threshold is not double the single one, which is a small penalty of its own for two high earners.
Filing separately while married is usually not the escape hatch it looks like. It uses its own bracket table, and it disqualifies you from several credits outright. It exists for specific situations, such as income-driven student loan repayment or liability separation, rather than as a way to recover the numbers on this page.
What is excluded here: state tax, which has its own marriage treatment and sometimes the opposite sign; credits, several of which phase out at thresholds that are not doubled for joint filers; and anything about whether marrying is a good idea, which is not a tax question.
How the income is split vs outcome
The same question at every how the income is split, so you can use the one you believe.
| How the income is split | Effect of marrying, on $1,000,000 combined |
|---|---|
| split evenlythis page | $3,983 penalty |
| split 75/25 | $1,447 penalty |
| earned by one partner | $39,749 bonus |
Federal income tax for 2026, both filers taking the standard deduction ($16,100 single, $32,200 joint). Payroll tax is unaffected by filing status and is excluded. No credits, no state tax.
Assumptions
- Combined Income
- 1000000
- Higher Earner
- 500000
- Lower Earner
- 500000
- Tax As Two Singles
- 276268
- Tax Filing Jointly
- 280251
- Difference If Married
- 3983
- Tax Year
- 2026 yr
Frequently asked
Is there a marriage penalty on $1M combined?
Yes, about $3,983 a year on $1,000,000 split evenly. It comes entirely from the 35% bracket, the first one that is not doubled for joint filers, so it reaches only large and similarly sized incomes and caps at about $10,251.
Why does the split matter more than the total?
Because the joint brackets are exactly double the single brackets through the 32% band. Uneven incomes let the higher earner use bracket space the lower earner was not using, which is where the saving comes from. Two equal incomes have nothing to shift, so the doubling gives them nothing, and they come out level rather than behind.
Does marrying change payroll tax?
No. Social Security and Medicare are charged per worker on wages and ignore filing status entirely. The one exception is the Additional Medicare surtax, whose joint threshold is not double the single one, so two high earners cross it sooner together than apart.
Should we file separately instead?
Usually not for this reason. Married filing separately has its own bracket table and disqualifies you from several credits outright, so it rarely recovers the difference. It is used for specific situations such as income-driven student loan repayment or separating tax liability, not as a workaround.
Does the wedding date matter?
Your filing status for the whole year is set by your status on December 31. Marrying on the 30th of December means filing jointly for that entire year, which is worth timing deliberately if you are getting a bonus, and worth timing the other way if you are getting a penalty.
Keep going
Rightmont switches your filing status in the year you marry and reprices every year after it. Model it free.
Model My Decision