Marriage usually changes your refund, but not always in the direction you expect
Getting married affects your tax refund because the IRS taxes married couples differently than single filers. Whether you get more or less back depends on your combined income, how much each of you earned, and which filing status you choose. Some couples see a larger refund after marriage; others see a smaller one. A few see almost no change.
The shift happens because marriage moves you into a different tax bracket and changes the standard deduction you can claim. It also affects which tax credits you can use and how much of your income is taxed at each rate. The year you marry, you have a choice: file as married filing jointly, or file as married filing separately. That choice alone can swing your refund by hundreds or thousands of dollars.
Key Takeaways
- Marriage changes your tax bracket and standard deduction, which usually changes the size of your refund compared to what you would have gotten as a single filer.
- The year you marry, you can file as married filing jointly or married filing separately — each produces a different refund amount.
- Married filing jointly usually produces a larger refund than filing separately, but not always if one spouse earns much more than the other.
- The "marriage penalty" or "marriage bonus" refers to whether you pay more or less tax as a married couple than you would have as two single people with the same combined income.
- Your refund size also depends on how much tax was withheld from your paychecks during the year, not just your filing status.
How the standard deduction changes when you marry
The standard deduction is the amount of income the IRS does not tax at all. When you file as single, the standard deduction for 2024 is $14,600. When you file as married filing jointly, it jumps to $29,200. That larger deduction means more of your combined income escapes taxation, which usually means a larger refund if you had taxes withheld from your paychecks.
However, the jump is not quite double. If you and your spouse each earned enough to file as single, you would each claim $14,600, for a total of $29,200 between you. Filing jointly gives you the same $29,200 total. The real advantage appears when one spouse earned very little or nothing — that spouse's unused standard deduction does not disappear, it rolls into the joint return.
If you file as married filing separately instead, each of you gets only $14,600, the same as a single filer. This is one reason married filing separately usually produces a smaller combined refund than married filing jointly.
Tax brackets shift when you marry
The IRS taxes income in brackets — the first portion of your income is taxed at 10%, the next portion at 12%, and so on, up to 37%. The income ranges for each bracket are different for married couples than for single filers. For 2024, a single filer enters the 22% bracket at $47,150 of income. A married couple filing jointly does not enter the 22% bracket until $100,525 of combined income.
This wider bracket means that if you and your spouse have similar incomes, you may pay less tax overall as a married couple than you would have as two single people. That translates to a larger refund. But if one spouse earns much more than the other, the higher earner may end up in a higher bracket than they would have as a single filer, which can reduce the refund.
The exact effect depends on your specific income numbers. There is no formula that works for everyone — you have to look at your own situation.
The marriage penalty and marriage bonus
A marriage bonus occurs when two people pay less combined tax as a married couple than they would have as two single people with the same combined income. This typically happens when one spouse earns significantly more than the other, because the lower earner's income gets taxed at the lower rates that apply to the first portion of the couple's combined income.
A marriage penalty occurs when two people pay more combined tax as a married couple than they would have as two single people. This typically happens when both spouses earn similar high incomes, because their combined income pushes both of them into higher tax brackets faster than they would have climbed as single filers.
Neither penalty nor bonus is automatic — it depends entirely on your income split. A couple where one person earns $30,000 and the other earns $100,000 will usually see a bonus. A couple where both earn $75,000 each may see a penalty. The IRS does not adjust your refund to account for this; it is simply how the tax code works.
Married filing separately usually produces a smaller refund
In the year you marry, you can choose to file as married filing jointly or married filing separately. Married filing separately means each spouse files their own return using only their own income and deductions. This almost always results in a smaller combined refund than filing jointly, because you each lose access to the larger married standard deduction and the wider tax brackets.
There are rare situations where married filing separately makes sense — for example, if one spouse has a large amount of student loan debt and is pursuing income-driven repayment, or if one spouse is disputing a tax issue from before the marriage. But for most couples, married filing jointly produces a larger refund.
You cannot file as married filing separately in years after you marry unless you have a specific reason. Once you are married, you must choose between married filing jointly and married filing separately each year — you cannot go back to filing as single.
Your withholding matters as much as your filing status
Your refund is not determined by your filing status alone. It is the difference between the total tax you owe and the total tax your employer withheld from your paychecks during the year. Two married couples with identical incomes and filing status can receive very different refunds if they had different amounts withheld.
When you marry, you should update your W-4 form with your employer to reflect your new filing status and combined household income. If you do not, your employer may withhold too much or too little tax, which changes the size of your refund. The IRS provides a withholding calculator on its website to help you figure out the right amount.
If you both work and both had taxes withheld as single filers before you married, your combined withholding might be too high for your new married filing jointly status, which could mean a larger refund. Conversely, if you update your W-4s to account for marriage and reduce withholding, you might owe money instead of receiving a refund.
What happens in the year you marry
In the year you marry, you have a choice about how to file. You can file as married filing jointly for the entire year, even if you were married on December 31st. You cannot file as single for that year. Your only options are married filing jointly or married filing separately.
Most couples file as married filing jointly for the year they marry, because it usually produces the best outcome. But run the numbers both ways if one spouse has a large deduction or credit that might be reduced by filing jointly, or if one spouse has significant self-employment income or investment losses.
After the year you marry, your filing status for future years depends on whether you are still married on December 31st of that year. If you divorce or your spouse dies, your filing status changes for that year and all future years.
How to estimate your refund after marriage
The IRS provides a tax withholding calculator on IRS.gov that can help you estimate how much tax should be withheld from your paychecks as a married couple. You will need your most recent pay stub and an estimate of your combined household income for the year.
You can also use tax software to run a test return showing what your refund would be if you filed as married filing jointly versus married filing separately. This is especially useful in the year you marry, when you are deciding which status to use. Many tax software programs offer this comparison for free.
If you want a more detailed picture, a tax professional can model your specific situation and show you the refund under different scenarios. This is worth the cost if your situation is complex — for example, if one of you is self-employed, has investment income, or has significant deductions.
Frequently Asked Questions
Will I automatically get a bigger refund if I get married?
Not automatically. Your refund depends on your combined income, how much tax was withheld from your paychecks, and your filing status. Some married couples get larger refunds than they would have as single filers; others get smaller ones. You have to look at your specific numbers.
Can I file as single in the year I get married?
No. In the year you marry, your only filing options are married filing jointly or married filing separately. You cannot file as single, even if you were married on the last day of the year. This applies to the entire tax year, not just the months after your wedding.
What is the marriage penalty?
The marriage penalty occurs when two people pay more combined tax as a married couple than they would have as two single people with the same combined income. It typically happens when both spouses earn similar high incomes. It is built into the tax code and cannot be avoided by choosing a different filing status.
Should I file married filing separately to get a bigger refund?
Almost never. Married filing separately usually produces a smaller combined refund than married filing jointly because you each lose the larger married standard deduction and wider tax brackets. File separately only if you have a specific reason, such as disputing a tax issue or managing student loan repayment.
Do I need to change my W-4 when I get married?
Yes. You should update your W-4 with your employer to reflect your new filing status and combined household income. If you do not, your employer may withhold the wrong amount of tax, which affects the size of your refund. Use the IRS withholding calculator to determine the correct amount.