What actually determines your refund size

Your refund is the difference between what you paid in taxes during the year and what you actually owed. To get more back, you need to either pay more in, or owe less, or both. The IRS does not decide how much you get back — your income, deductions, and withholding do.

Most people think of a refund as a bonus. It is not. It is your own money that you overpaid to the government through paychecks or estimated payments. Getting a larger refund means you gave the government an interest-free loan all year. The goal for most people is to break even or owe a small amount, not to maximize the refund.

That said, if you are getting a refund anyway, there are real ways to make it larger by reducing what you owe or by claiming deductions and credits you may have missed.

Key Takeaways

  • Your refund comes from overpaying taxes during the year, not from the government giving you money, so a larger refund means you lent the government your money interest-free.
  • Claiming all deductions you are may have access to to — mortgage interest, property taxes, charitable donations, student loan interest — directly reduces what you owe and increases your refund.
  • Tax credits like the Earned Income Tax Credit or Child Tax Credit reduce your tax bill dollar-for-dollar and often produce refunds even when you owe nothing.
  • Changing your W-4 withholding to pay less during the year and then claiming deductions at tax time will increase your refund, but leaves you with less money in each paycheck.
  • Keeping records of deductible expenses — medical bills, business mileage, home office costs — throughout the year makes it possible to claim them when you file.

Deductions that reduce your taxable income

A deduction lowers the income amount the IRS taxes. If you earn $60,000 and claim $10,000 in deductions, you only pay tax on $50,000. The larger your deductions, the smaller your tax bill, and the larger your refund if you have already overpaid.

You can either take the standard deduction — a flat amount set by the IRS each year that depends on your filing status — or itemize by listing specific expenses. Itemizing only makes sense if your total deductions exceed the standard deduction. For 2024, the standard deduction is $14,600 for single filers and $29,200 for married filing jointly, though these amounts change yearly.

Common itemized deductions include mortgage interest (not principal), property taxes, state and local income taxes (capped at $10,000), charitable donations, and medical expenses above 7.5% of your income. If you are self-employed, you can deduct business expenses, home office costs, and half of your self-employment tax. Keep receipts, bank statements, and written records of donations throughout the year — the IRS asks for proof if you are audited.

Tax credits that directly reduce what you owe

A tax credit is more valuable than a deduction because it reduces your tax bill dollar-for-dollar instead of reducing your income. A $1,000 credit saves you $1,000 in taxes. A $1,000 deduction saves you roughly $120 to $370 depending on your tax bracket.

The Earned Income Tax Credit (EITC) is the largest refundable credit for working people with lower incomes. It can be worth $600 to $3,700 depending on your income and family size, and you can receive it as a refund even if you owe no tax. The Child Tax Credit is $2,000 per child under 17, and part of it is refundable. The American Opportunity Tax Credit covers up to $2,500 of education expenses per student per year. The Saver's Credit rewards people who save for retirement.

Many people do not claim credits they are may have access to to because they do not know they exist or think they earn too much. The IRS website has a Interactive Tax Assistant tool that walks you through questions to determine which credits you may be able to claim. If you have dependents, earned income, or paid education expenses, run through it.

Adjusting your withholding to increase your refund

Your employer withholds taxes from each paycheck based on the W-4 form you filled out. If you want a larger refund, you can lower your withholding — which means less tax comes out of each paycheck, and more of your money stays with you during the year. When you file your return and claim deductions and credits, you will owe less tax, and the difference becomes your refund.

This approach has a real cost: you have less money in your pocket every month. A person who changes their W-4 to get a $3,000 refund is essentially choosing to receive $250 less per month for twelve months. That money could have earned interest in a savings account or paid down debt. The IRS W-4 calculator on its website helps you estimate the right withholding, but be honest about whether you actually want a smaller paycheck.

If you are self-employed or have income with no withholding, you can make estimated tax payments quarterly to the IRS. Overpaying on these payments will also result in a refund when you file, but again, you are lending the government your money interest-free.

Income sources you may not be reporting

The IRS taxes all income, not just wages. If you have side income from freelance work, selling items online, rental property, or investment gains, you must report it. Many people do not realize that this unreported income increases their tax bill and reduces their refund.

Conversely, if you have capital losses from selling stocks or investments at a loss, you can use up to $3,000 of those losses to offset other income in a single year, which lowers your tax bill. Losses beyond $3,000 carry forward to future years. If you received a 1099 form from a client, platform, or investment account, that income is already reported to the IRS, and you must report it on your return or face a mismatch notice.

Deductions specific to your situation

Some deductions explore only to certain people. If you paid student loan interest, you can deduct up to $2,500 per year even if you do not itemize. If you are self-employed, you can deduct the cost of health insurance premiums you pay yourself, half of your self-employment tax, and a home office if you have a dedicated workspace. If you moved for work, some moving expenses may be deductible if you are in the military.

If you made charitable donations, keep bank statements or receipts showing the amount and the organization's name. If you donated a car, you need the title transfer document. If you had unreimbursed medical expenses — dental work, glasses, therapy, medications — add them up; you can only deduct the amount above 7.5% of your adjusted gross income, but large medical years can produce a deduction.

If you own a home and paid property taxes or mortgage interest, these are deductible if you itemize. Homeowners can also deduct points paid to refinance a mortgage, spread over the life of the loan. If you paid state or local income taxes, you can deduct them, but the total of state and local taxes (including property tax) is capped at $10,000.

Organizing records to claim everything you are may have access to to

The difference between a small refund and a large one often comes down to documentation. Keep a folder or digital file throughout the year for receipts, bank statements, and records of deductible expenses. Take photos of donation receipts. Save emails confirming charitable gifts. Print out statements from investment accounts showing capital losses.

When you file your return, you do not submit these documents to the IRS, but you must keep them for at least three years in case you are audited. The IRS is more likely to audit people who claim large deductions without records, so having proof matters. If you use tax software or work with a tax professional, they will ask you for these records, and you will be ready.

Many people leave money on the table straightforward because they did not track expenses or did not know a deduction existed. Spending an hour in January organizing the previous year's receipts and reviewing a checklist of possible deductions can easily add hundreds to your refund.

Frequently Asked Questions

Is it better to get a big refund or break even?

Breaking even or owing a small amount is usually better financially because you keep your money throughout the year instead of lending it to the government interest-free. A large refund means you overpaid significantly. That said, if you struggle with saving, a refund can be a forced savings tool — just recognize that you are choosing to have less money in your paycheck.

Can I claim deductions if I take the standard deduction?

No. You choose either the standard deduction or itemized deductions, not both. If your itemized deductions add up to less than the standard deduction, you are better off taking the standard deduction. If they exceed it, itemize instead.

What if I missed a deduction or credit on a return I already filed?

You can file an amended return using Form 1040-X within three years of the original filing date. If the amendment results in a refund, the IRS will send it to you. If it results in additional tax owed, you will receive a bill.

Do I have to report income from a side gig or online sales?

Yes. All income is taxable, including freelance work, gig economy earnings, and online sales. If you earned more than $600 from a platform like Stripe or PayPal, you will receive a 1099-K form, and the IRS will see it. Even without a form, you are required to report it. Unreported income increases your tax bill and reduces your refund.

Can I claim a home office deduction if I work from home part-time?

Yes, if you have a dedicated space used regularly and exclusively for work. You can use the simplified method (multiply square footage by $5 per square foot, up to 300 square feet) or calculate actual expenses like utilities, rent, and depreciation. Keep records showing the space is used only for work.