What actually increases your refund

A bigger refund comes from two things: claiming deductions you missed, or claiming tax credits you didn't know existed. Deductions lower the income the IRS taxes you on. Credits directly reduce the tax you owe, dollar for dollar, so they have a bigger impact on your refund. The difference matters: a $1,000 deduction might save you $120 to $370 in tax depending on your income bracket, but a $1,000 credit saves you exactly $1,000.

Most people leave money on the table because they don't know what they can claim, or they take the standard deduction without checking whether itemizing would be worth more. Others miss credits entirely because they don't fit the stereotype of who "should" get them. This guide walks through the real deductions and credits that move the needle, how to know if you may have access to, and where to find them on your return.

Key Takeaways

  • Tax credits reduce what you owe dollar-for-dollar and have a much bigger impact on your refund than deductions do.
  • The Earned Income Tax Credit (EITC) and Child Tax Credit are the two largest credits for most households, but you have to claim them — the IRS won't add them automatically.
  • Itemizing deductions instead of taking the standard deduction only makes sense if your total deductions exceed the standard deduction for your filing status, which changes every year.
  • Common missed deductions include student loan interest, educator expenses, medical costs above 7.5% of your income, and charitable donations if you itemize.
  • The IRS does not catch most missing deductions or credits on its own, so the burden is on you to find and claim them.

Tax credits that directly reduce what you owe

The Earned Income Tax Credit (EITC) is the single largest credit for working people with low to moderate income. For 2024, you can claim it if you earned less than roughly $63,398 (the exact amount depends on filing status and number of children). The credit ranges from a few hundred dollars to over $3,700 depending on your income and whether you have children. Many people who may have access to never claim it because they don't realize it exists or think it only applies to families with kids — it doesn't.

The Child Tax Credit gives you $2,000 per child under 17 if you claim them as a dependent. Part of this credit is refundable, meaning you can get money back even if you owe no tax. The Child and Dependent Care Credit covers up to $3,000 in childcare expenses per year if you paid someone to watch your children while you worked. The Adoption Credit covers adoption expenses up to $15,260 per child in 2024 if you finalized an adoption that year.

The American Opportunity Credit gives you up to $2,500 per student per year for college tuition and fees during the first four years of college. The Lifetime Learning Credit covers up to $2,000 per return (not per student) for any post-secondary education, including graduate school and non-degree courses. You cannot claim both credits for the same student in the same year, so you have to pick the one that gives you more money.

The Saver's Credit rewards you for putting money into a retirement account if your income is below certain thresholds — roughly $68,250 for single filers in 2024. It gives you a credit of 10%, 20%, or 50% of what you contributed, up to $2,000 in contributions, so the maximum credit is $1,000. This one is almost never claimed because it is obscure and has strict income limits, but if you have low income and you contributed to an IRA or 401(k), it is worth checking.

Deductions that lower your taxable income

Itemized deductions let you deduct specific expenses instead of taking the standard deduction. The standard deduction for 2024 is $14,600 for single filers and $29,200 for married filing jointly. You only benefit from itemizing if your total deductions exceed these amounts. Common itemized deductions include mortgage interest, state and local taxes (capped at $10,000), charitable donations, and medical expenses above 7.5% of your adjusted gross income.

If you are self-employed or have a side business, you can deduct business expenses: home office space, equipment, supplies, mileage, meals, and professional services. You report these on Schedule C. The may have access to business income deduction lets you deduct up to 20% of your business income if you meet certain conditions, which can be substantial.

Student loan interest is deductible up to $2,500 per year even if you don't itemize. Educator expenses let teachers and school staff deduct up to $300 in classroom supplies. Alimony paid is deductible if the divorce or separation agreement was signed before January 1, 2019. IRA contributions are deductible if you have no workplace retirement plan, or if you do but your income is below certain limits.

If you had a loss on the sale of stocks, bonds, or other investments, you can deduct capital losses up to $3,000 against your other income, and carry forward any excess to future years. If you paid investment fees or had unreimbursed employee business expenses, those were deductible in prior years but are no longer deductible under current law — this matters only if you are amending an old return.

How to know if itemizing makes sense for you

Add up all your potential itemized deductions: mortgage interest, property taxes, state income taxes, charitable donations, and medical expenses above 7.5% of your income. If the total is higher than the standard deduction for your filing status, itemizing will give you a bigger deduction and a bigger refund. If it is lower, take the standard deduction and move on.

The standard deduction changes every year and depends on your age and filing status. For 2024, it is $14,600 for single filers under 65, $23,200 for married filing jointly under 65, and higher if you are 65 or older. Check the IRS website or your tax software for the current year's amount before you decide.

Many people are surprised to find that itemizing does not help them because state and local taxes are capped at $10,000 total, and mortgage interest only counts if you have a large mortgage. If you are in a state with high income tax and you own a home, itemizing is more likely to pay off. If you rent and live in a low-tax state, the standard deduction usually wins.

Where to find these deductions and credits on your tax return

On Form 1040, credits go on lines 24 through 33, depending on which credit. The EITC goes on line 27c. Child Tax Credit and other dependent credits go on line 28. Education credits go on line 29. The Saver's Credit goes on line 30. If you are using tax software, it will walk you through questions and fill in the right lines automatically.

Deductions go in different places depending on whether you itemize. If you itemize, you fill out Schedule A and report your total on line 12 of Form 1040. If you take the standard deduction, you just enter the standard deduction amount on line 12 and skip Schedule A. Business deductions go on Schedule C if you are self-employed. Student loan interest goes on line 21 of Form 1040.

The IRS publishes Publication 17 (Your Federal Income Tax), which lists every deduction and credit with income limits and requirements. It is free and available on the IRS website. Your tax software will also prompt you for common deductions and credits based on your answers to its questions, so if you answer honestly, it should catch most of them.

What happens if you claim something you shouldn't

If you claim a credit or deduction you do not may have access to for, the IRS will catch it during processing or during an audit. If they catch it, they will reduce your refund or send you a bill for the tax you should have paid. If you made an honest mistake, you can amend your return using Form 1040-X within three years. If the IRS suspects fraud — claiming credits for children who do not exist, for example — the penalties are much steeper.

The safest approach is to claim only what you can document. Keep receipts for charitable donations, medical bills, and business expenses. Keep proof of tuition payments and student loan interest statements. Keep records of childcare expenses and provider tax ID numbers. If you cannot prove it, do not claim it.

Common deductions people forget

Charitable donations are deductible only if you itemize, and only if you have a receipt or written acknowledgment from the charity. Many people donate but do not itemize, so they get no deduction. If you do itemize, keep track of cash donations, clothing donations, and mileage driven for charity work (14 cents per mile in 2024).

Medical expenses are deductible only if they exceed 7.5% of your adjusted gross income, and only if you itemize. For someone with $60,000 in income, that means you need over $4,500 in medical expenses before you can deduct any of them. This includes insurance premiums you paid out of pocket, copays, prescriptions, dental work, glasses, and travel to medical appointments.

Home office expenses are deductible if you are self-employed and use part of your home exclusively for business. You can deduct either a simplified amount ($5 per square foot, up to 300 square feet) or calculate actual expenses like rent, utilities, and insurance. If you work from home as an employee, you cannot deduct home office expenses under current law.

Investment losses can offset investment gains and up to $3,000 of other income per year. If you sold stocks or mutual funds at a loss, report the loss on Schedule D. If your losses exceed your gains by more than $3,000, you can carry the excess forward to future years.

Frequently Asked Questions

Can I claim the EITC if I have a job?

Yes. The EITC is for working people with low to moderate income. You must have earned income from a job or self-employment, but you can earn up to roughly $63,398 depending on your filing status and number of children. Many full-time workers may have access to and never claim it.

What if I already filed and missed a deduction?

You can file an amended return using Form 1040-X within three years of the original filing date. The IRS will process it and send you a refund for the additional deduction or credit you claimed. There is no penalty for amending to claim a deduction you missed.

Do I have to keep receipts for charitable donations?

Yes, if you itemize. For donations under $250, you need a receipt from the charity or a bank record showing the donation. For donations of $250 or more, you need a written acknowledgment from the charity stating the amount and whether you received anything in return. Without proof, the IRS will disallow the deduction if you are audited.

Can I claim both the American Opportunity Credit and the Lifetime Learning Credit?

No, not for the same student in the same year. You have to choose one. The American Opportunity Credit is usually larger if the student is in their first four years of college, but calculate both and pick the one that gives you more money.

What if my income is too high for a credit?

Most credits have income limits that phase out as your income rises. If you are just over the limit, you may still get a partial credit. Check the IRS website or your tax software for the exact income thresholds for the credit you are interested in. Income limits change every year.