Marriage usually lowers your refund, not raises it

Getting married does not automatically give you a larger tax refund. In fact, most married couples find their combined refund is smaller than what they would have received filing separately — or they owe money instead of getting a refund. This happens because the tax brackets and standard deduction change when you marry, and the way the IRS calculates withholding does not always account for two incomes in one household.

The size of your refund depends on how much tax your employer withheld from your paychecks during the year, not on your filing status. Marriage changes how much tax you should owe, but it does not change how much your employer took out unless you update your W-4 form. That mismatch is usually why married couples see a different refund than they expected.

Key Takeaways

  • Your refund shrinks or disappears when you marry because two incomes in one household push you into higher tax brackets, even if each income alone would have been low.
  • The standard deduction for married filing jointly is higher than for single filers, but not high enough to offset the bracket change for most two-income couples.
  • Your employer withholds tax based on the W-4 form you fill out, and most people do not update it after marriage, so withholding stays too low.
  • Updating your W-4 after marriage is the main way to avoid owing money at tax time instead of getting a refund.

Why two incomes create a smaller refund

The IRS taxes married couples filing jointly on a combined income. That combined total moves you into a higher tax bracket than either person would occupy alone. For example, if you each earn $50,000, your household income is $100,000. The tax on $100,000 is higher than the tax on two separate $50,000 incomes added together — this is called the marriage penalty, and it affects most two-income couples.

The standard deduction for married filing jointly is higher than for single filers — roughly double — but it does not fully offset the bracket effect. A single person with a $50,000 income and a single person with a $50,000 income each get a standard deduction. When they marry and file jointly, they get one larger standard deduction, but it does not cover the extra tax from combining their incomes into one return.

This is not a surprise or a penalty you can avoid. It is how the tax code works. The refund you get back depends on whether your employer withheld enough tax during the year to cover what you actually owe on that combined income.

What happens to withholding when you marry

Withholding is the tax your employer removes from each paycheck. It is based on the W-4 form you complete when you start a job. Most people do not update their W-4 after they marry, so their employer keeps withholding at the single-filer rate even though they are now married and filing jointly.

If you were each withholding enough tax as single filers, you are now withholding too little as a married couple. Your combined income is higher, so you owe more tax, but your paychecks are still being reduced as if you were single. The result is that you owe money at tax time instead of getting a refund — or your refund is much smaller than it used to be.

The IRS provides a W-4 worksheet specifically for married couples with two jobs. It helps you calculate how much total withholding you need across both paychecks. You and your spouse each fill out a new W-4 and give it to your employers. This is the main lever you control to change the size of your refund.

When marriage might increase your refund

If only one spouse works, or one spouse earns significantly more than the other, marriage can sometimes increase the total refund. This happens because the higher earner's income is taxed at lower rates when combined with the lower earner's income on a joint return. The lower earner's standard deduction also reduces the household's taxable income.

Even in these cases, the refund increase is not automatic. It depends on whether your employer withheld the right amount. If the higher earner was withholding at a single-filer rate and is now married, they may need to reduce their withholding slightly — which means a smaller refund, not a larger one.

The only way to know whether marriage will increase or decrease your refund is to run the numbers for your specific situation. The IRS tax withholding estimator at irs.gov can help you see whether your current withholding is on track.

How to adjust your withholding after marriage

Start by filling out a new W-4 form for each job in your household. You can get the form from your employer's HR or payroll department, or read it from irs.gov. The form includes a worksheet for married couples with multiple jobs — use it to calculate how much withholding you need in total across both paychecks.

The worksheet asks for your combined income, your spouse's income, and any other income sources. It then tells you how much to withhold from each paycheck. You may find that you need to increase withholding on one paycheck and decrease it on the other, or increase withholding on both.

Once you complete the worksheet and fill out the W-4, give it to your payroll department. The change usually takes effect within one or two pay periods. Your next few paychecks will reflect the new withholding amount.

The difference between refund and tax liability

A refund is the money the IRS sends back to you after you file your return. It happens when you withheld more tax than you actually owed. Your tax liability is the total amount of tax you owe based on your income and filing status. These are not the same thing.

Marriage changes your tax liability — the amount you owe — but it does not change your refund unless you also change your withholding. If you want to keep getting a refund of similar size after marriage, you need to increase your withholding so that more tax comes out of your paychecks during the year. If you do not adjust your withholding, you will owe money at tax time instead.

Some people prefer to owe a small amount or break even, because it means they had more money in their paychecks during the year instead of giving the IRS an interest-free loan. Others prefer to get a refund. Either choice is fine — it is just a matter of when you want the money.

Filing status options for married couples

Married couples can file jointly or separately. Filing jointly almost always results in lower total tax than filing separately, so most couples choose that option. However, filing separately can sometimes be useful if one spouse has significant deductions or credits that the other spouse does not.

Your filing status also affects your standard deduction and tax brackets. Married filing separately uses the same brackets as single filers, so it does not solve the marriage penalty problem — it usually makes it worse because you lose access to some credits and deductions.

If you are considering filing separately, run the numbers both ways before you file. The IRS tax software or a tax professional can show you the difference in your refund or tax owed under each filing status.

Frequently Asked Questions

Does the marriage penalty go away if one spouse does not work?

No, but it is much smaller or nonexistent. If one spouse has no income, the household income is just the working spouse's income, so there is no penalty from combining two incomes. The working spouse may actually pay less tax filing jointly than they would have filing single, because the non-working spouse's standard deduction reduces the household's taxable income.

Can I get a bigger refund by filing separately after marriage?

Almost never. Filing separately usually results in higher total tax and disqualifies you from several credits. Run the numbers both ways with tax software before you file, but expect filing jointly to give you a larger refund or lower tax owed.

What if I got married in December — do I file as married for that whole year?

Yes. Your filing status on December 31 is your filing status for the entire year. If you were married on December 31, you file as married for that tax year, even if you were only married for one day. You can choose to file jointly or separately, but you cannot file as single.

How much should I increase my withholding after marriage?

Use the W-4 worksheet for married couples with multiple jobs. It calculates the exact amount you need based on your combined income. If you do not want to use the worksheet, you can also ask your payroll department for help, or use the IRS tax withholding estimator at irs.gov.

Will getting married change my tax refund from last year?

No. Your tax refund is based on the year you file it for. If you got married in 2024, your 2023 tax return (filed in early 2024) was based on your single filing status and will not change. Your 2024 return (filed in early 2025) will be based on your married filing status and will likely show a different refund.