Why Is My Tax Refund Lower Than Expected?

Your tax refund may be lower than expected because of changes to your withholding, unpaid debts offset by the government, IRS adjustments to your return, or shifts to your income or filing status. In most cases, a smaller refund isn’t a mistake; it reflects your actual tax situation for the year. Understanding why it happened is the first step to getting more back next time.

You filed your taxes, waited for your refund, and then the number came back lower than you expected. Maybe it’s a lot lower. Before you assume something went wrong, it’s worth knowing that a smaller refund doesn’t always mean that a mistake was made. It usually means something has changed.

Below, we’ll walk through the six most common reasons your refund came back smaller than expected, and what you can do about each one.

6 reasons why your refund may be lower than expected

There are a few reasons why your refund is less than expected this tax season:

1. Calculation mistakes

You may have entered the wrong numbers when reporting your wages and/or withholdings. Check the income and withholding sections of Form 1040 to make sure the wages and tax withheld you reported matches the amounts reported on your W-2 forms. 

2. Unpaid debt

If you have unpaid debt with a state or federal agency, the federal government can garnish your refund to pay off that debt. This includes past-due child support, state and federal income tax, certain unemployment compensation debts, and other government debt.

If you owe taxes to the IRS from a previous tax year, those taxes will be reduced from any eligible tax refunds for the current year. The IRS will actually take payments for owed federal taxes from a previous year before any other federal or state agency can take payments under the Treasury Offset Program. (Read more about offsets in the next section.)

You can use the IRS Online Account for Individuals to get information about your IRS balance due, payments, tax records, and more.

Offsets

It’s possible that your tax refund may have been reduced by the Treasury Offset Program. The Treasury Offset Program oversees the collection of overdue bills owed to federal and state agencies. Different federal and state agencies, such as the Department of Education and the Office of Child Support Services, submit delinquent debts that need to be collected. These debts are then paid off with tax refunds, which results in a lower tax refund amount.

If you have questions about a delinquent debt to another government agency that may have resulted in a lower tax refund, you can call the Treasury Offset Program at 800-304-3107 to find out which agencies you owe the debt to. You will then need to contact that specific agency to discuss payment options yourself. It’s important to note that not all bills are subject to a tax offset. It’s important to note that not all bills are subject to a tax offset. Bills from private lenders like a late car payment or missed cell phone bills will not reduce your tax refund.

Typically, the IRS will mail you a notice if your tax refund is different from the amount you claimed on your tax return. The notice will include information on the refund you were eligible for, the amount your tax refund was reduced by, what agency the money was sent to, and contact information for that agency. 

If your refund is less than expected, you can check IRS Where’s My Refund, which will give you the most up-to-date information about your refund. The IRS will also send you a notice CP12 outlining why your refund was adjusted.

3. Underpaid estimated taxes

If you’re self-employed and earned more than you expected to earn, you may have underpaid your estimated taxes. You can use a tax withholding calculator to figure out how much to pay in quarterly estimated tax payments for self-employed taxes.

4. W-4 withholding

The amount you’re withholding on your W-4 can affect your tax return, so make sure you’re withholding at least the amount you owe in taxes. If your personal or financial situation changes, use our W-4 calculator to determine the correct amount to withhold based upon your personal situation. You can then print and submit your new W-4 with your employer to make sure the correct amount is withheld.

5. IRS adjustments

While your tax return is being processed, the IRS cross-references the information on your tax return with the information they have on file for you. If there are any inconsistencies, the IRS will correct any differences and send you a letter of adjustment. 

Some common errors that result in adjustments by the IRS include: 

• Missing income, such as omitting interest income reported on a 1099-INT or forgetting to add a W-2 from a former job
• Transposed numbers or putting a decimal in the wrong spot  
• Adjustments to certain deductions or credits 

Sometimes these mistakes occur when you wait until the last minute to file because you’re rushing to make the filing deadline. 

Another common issue that results in a lower tax refund are adjustments to credits or deductions because someone else claimed the same dependent on their tax return. If you provide over half of the support for your dependent and you’re eligible to claim them, make sure no one else is claiming them. Be informed and make sure you have accurate information for who you can claim as a dependent. 

If applicable, have a discussion with your child’s other parent (if possible) about who can claim them as a dependent if you’re no longer together.

If the IRS adjusts your tax return, you’ll receive a Notice CP12 regarding the adjustments they made.

6. Incorrect filing status

You may have checked the wrong box when claiming your standard deduction. The standard deduction varies based on your filing status, so selecting the right filing status is key.

Ways to save on your taxes despite tax law changes

While your return may be lower than expected, you can find ways to save on your taxes.

There are tax credits and deductions that can help increase your tax refund if you are able to itemize. Make sure you have picked up your mortgage interest and property taxes if you own your home, deduct all applicable business expenses from your self-employed income, and make sure you claim all credits you are entitled to. Missed write-offs and credits could mean money left on the table.

Even if you don’t have a lot of individual write-offs, many taxpayers are eligible for the standard deduction, which is adjusted for inflation. (Explore TurboTax’s Standard vs. Itemized Deduction Calculator.)

For 2025, the standard deductions are:

• $15,750 for single filers
• $15,750 for married, filing separately
• $23,625 for head of household
• $31,500 for married, filing jointly

For 2024, the standard deduction was:

• $14,600 single
• $21,900 Head of Household
• $29,200 married filing jointly

Take steps now to lower your tax bill and taxable income. Explore these tips on how to know if you have enough deductions to itemize, so you can increase your tax refund. No matter what moves you made last year, TurboTax will make them count on your taxes.

Whether you want to do your taxes yourself or have a TurboTax expert file for you, we’ll make sure you get every dollar you deserve and your biggest possible refund — guaranteed.

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