US Federal Tax Deductions and Credits Guide for the 2025 Tax Year

A tax deduction lowers the income you pay federal tax on, and a tax credit lowers the tax itself. For the 2025 tax year (the return you file in 2026), most people take the standard deduction of $15,750 if single, $31,500 if married filing jointly, or $23,625 if head of household. On top of that, you can claim several deductions that do not need itemizing, such as student loan interest, IRA contributions, and four new ones: tips, overtime, car loan interest and a senior deduction. Credits like the Child Tax Credit and the Earned Income Tax Credit can then cut your bill, or increase your refund, dollar for dollar.

This guide lists the federal deductions and credits that matter for the 2025 tax year, who can claim each one, the dollar limits, and the IRS form you use. Every figure comes from an IRS page listed in the Sources section at the end. It covers federal tax only. State rules differ, and this is an estimate only, not financial advice.

If you want a number for your own situation, the 2025 US federal tax calculator asks a few plain questions about your income and expenses and estimates your refund.

A deduction reduces your taxable income. Its value depends on your tax bracket. A $1,000 deduction saves you $120 if your top rate is 12%, and $220 if it is 22%.

A credit reduces your tax bill directly, so a $1,000 credit saves $1,000 no matter your bracket. Some credits are refundable, which means you can receive money back even if the credit is more than the tax you owe. Others are non-refundable, which means they can only bring your tax down to zero.

There are also two kinds of deductions:

• Above-the-line deductions (also called adjustments to income) come off your income before you pick between the standard deduction and itemizing. You get them either way.
• The standard deduction or itemized deductions. You choose whichever is bigger. You cannot take both.

The standard deduction is a flat amount that depends on your filing status. Most people take it because it needs no receipts. Under the One, Big, Beautiful Bill (signed July 4, 2025), the 2025 amounts were raised from the figures first announced in 2024.

Age 65 or older, or blind. For 2025 you add $1,600 to your standard deduction for each of those conditions, or $2,000 if you are unmarried and not a surviving spouse. If you were born before January 2, 1961, you count as 65 for 2025.

Claimed as someone else's dependent. If a parent or another taxpayer can claim you, your 2025 standard deduction is limited to the greater of $1,350, or your earned income plus $450 (but never more than the standard amount for your filing status).

Who cannot use it. You cannot take the standard deduction if you are married filing separately and your spouse itemizes, if you were a nonresident or dual-status alien for the year (with limited exceptions), or if you file a return for less than 12 months because you changed your accounting period.

The 2025 tax law added four deductions that you claim on a new form, Schedule 1-A. You can claim them whether you take the standard deduction or itemize. All four apply for tax years 2025 through 2028, and all four shrink as your income rises. In each case you need a valid Social Security number, and married couples must file jointly to claim them.

MAGI means modified adjusted gross income, which is your adjusted gross income with certain items added back. Schedule 1-A works it out for you in Part I. For the Earned Income Tax Credit, the IRS says to include the full amount of tip and overtime income when testing your eligibility, even if you deduct part of it.

These above-the-line deductions reduce your adjusted gross income. They are available even when you take the standard deduction.

• Student loan interest: the smaller of $2,500 or the interest you actually paid on a qualified student loan. It phases out at higher incomes, and you cannot claim it if you are married filing separately. Your lender sends Form 1098-E if you paid $600 or more.
• Educator expenses: up to $300 ($600 if you and your spouse are both eligible educators, with a $300 limit each) for classroom supplies, books and professional development. You must be a K-12 teacher, instructor, counselor, principal or aide for at least 900 hours in the school year. See our teachers tax guide.
• Traditional IRA contributions: you can contribute up to $7,000 for 2025 ($8,000 if you are 50 or older). If you or your spouse has a retirement plan at work, the deduction phases out. For 2025 that range is $79,000 to $89,000 for a single filer, and $126,000 to $146,000 for a married couple filing jointly when the contributing spouse has a workplace plan.
• Health Savings Account (HSA) contributions: for 2025 you can contribute up to $4,300 with self-only high-deductible coverage or $8,550 with family coverage, plus $1,000 if you are 55 or older.
• Self-employed deductions: half of your self-employment tax and your self-employed health insurance premiums are adjustments to income. See our US self-employed tax guide.

A note on 401(k) contributions: the 2025 employee limit is $23,500 ($31,000 if you are 50 or older, and $34,750 if you are 60 to 63). They are not a deduction you claim. Your employer takes them out of your pay before tax, so they simply lower the wages on your W-2.

You itemize on Schedule A when your allowed expenses add up to more than your standard deduction. The main categories are:

• State and local taxes (SALT): state and local income tax (or general sales tax), plus real estate and personal property tax. For 2025 the total is capped at $40,000 ($20,000 if married filing separately). The cap is reduced for high earners, but not below $10,000.
• Home mortgage interest: interest and points on a loan secured by your main home or a second home. For homes bought after December 15, 2017 the debt limit is $750,000 ($375,000 if married filing separately). Older mortgages can have a $1 million limit.
• Charitable gifts: gifts to qualified organizations, with limits. Keep a bank record or written acknowledgment, and for any gift of $250 or more you need a written acknowledgment from the charity. In 2025 only itemizers get this deduction (see the 2026 change below).
• Medical and dental expenses: only the part that is more than 7.5% of your adjusted gross income. Insurance reimbursements do not count.
• Other items: investment interest (limited to net investment income), certain gambling losses, and casualty losses from federally declared disasters.

You cannot deduct federal income tax, Social Security tax, homeowners' association fees, or water, sewer and trash service charges.

When does itemizing win? Add up your Schedule A items. If the total is more than your standard deduction for your filing status, itemize. If it is lower, take the standard deduction. The worked example below shows how small the gap can be.

Assumptions (tax year 2025): Alex is single with no dependents and earned $60,000 in wages. $6,800 of federal income tax was withheld from pay. Alex has no other income and uses the 2025 federal brackets (10% up to $11,925, 12% from $11,925 to $48,475). This ignores state tax and any credits.

Option 1: standard deduction

1. Taxable income = $60,000 − $15,750 = $44,250
2. Tax on the first $11,925 at 10% = $1,192.50
3. Tax on the next $32,325 ($44,250 − $11,925) at 12% = $3,879.00
4. Total tax = $1,192.50 + $3,879.00 = $5,071.50
5. Refund = $6,800 withheld − $5,071.50 tax = $1,728.50

Option 2: itemize. Alex paid $9,000 of mortgage interest, $7,000 of state and local taxes (under the $40,000 cap) and gave $1,500 to charity. That is $17,500, which is more than $15,750.

1. Taxable income = $60,000 − $17,500 = $42,500
2. Tax = $1,192.50 + 12% × ($42,500 − $11,925 = $30,575) = $1,192.50 + $3,669.00 = $4,861.50
3. Refund = $6,800 − $4,861.50 = $1,938.50

Itemizing is worth $210 more, which is $1,750 of extra deductions at a 12% rate.

Adding an above-the-line deduction. If Alex also put $3,000 into a traditional IRA and is fully eligible to deduct it (Alex's income is below the $79,000 phase-out start for people with a workplace plan), taxable income under the standard deduction falls to $41,250. Tax becomes $4,711.50, so the refund rises to $2,088.50. That is $360 more, or 12% of $3,000.

Deduction vs credit. A $1,000 credit would cut the original $5,071.50 tax to $4,071.50 and lift the refund to $2,728.50, which is $1,000 more. A $1,000 deduction in the same bracket only adds $120.

Main limitation: real returns have more moving parts, such as other income, state tax, phase-outs and the credits below. Treat this as an illustration, not an estimate for your return.

Credits are usually worth more than deductions of the same size, so check these before you file. Amounts below are for tax year 2025.

Refund timing. If you claim the Earned Income Tax Credit or the Additional Child Tax Credit, the IRS cannot issue the refund before mid-February.

Education credits. You can only claim one education credit per student for the same expenses. The student normally receives Form 1098-T from the school by January 31.

For nurses, teachers and the self-employed, we also have profession-specific guides: nurses, teachers and self-employed workers.

Some breaks are on the way out and some are new next year. Check the date of your spending.

• Clean vehicle credits (new and used) are not allowed for vehicles acquired after September 30, 2025.
• Home energy credits: the Energy Efficient Home Improvement Credit does not apply to property placed in service after December 31, 2025, and the Residential Clean Energy Credit does not apply to spending after December 31, 2025. Both can still be claimed on a 2025 return for 2025 spending.
• Charitable gifts without itemizing: starting with tax year 2026, you can deduct up to $1,000 of cash gifts ($2,000 if married filing jointly) to qualifying charities even if you take the standard deduction. Gifts to donor-advised funds and supporting organizations, and non-cash gifts, do not count.
• Child and Dependent Care Credit: from tax year 2026 the maximum credit rate rises from 35% to 50% of eligible expenses, with the same $3,000 and $6,000 expense limits.
• Standard deduction: rises to the 2026 figures in the table above.
• HSAs: for 2026 the limit is $4,400 for self-only coverage and $8,750 for family coverage. Bronze and catastrophic plans are treated as HSA-compatible from January 1, 2026.

Your deductions reduce taxable income, and the brackets then apply to what is left. Only the slice of income inside each bracket is taxed at that bracket's rate. The same rates apply for 2025 and 2026, with the thresholds moving up for inflation.

• Standard deduction: no extra form. Your filing status sets the amount on Form 1040.
• Tips, overtime, car loan interest, senior deduction: Schedule 1-A, with the total carried to Form 1040.
• Student loan interest, educator expenses, IRA and HSA deductions: Schedule 1 (HSAs also use Form 8889).
• Itemized deductions: Schedule A.
• Child Tax Credit and Credit for Other Dependents: Schedule 8812.
• Education credits: Form 8863.
• Child and Dependent Care Credit: Form 2441.
• Noncash charitable gifts over $500: Form 8283.

Keep your records. Bank statements, Forms 1098, 1098-E and 1098-T, W-2s and charity acknowledgments are what you will need if the IRS asks.

If you filed and then found a deduction or credit you missed, file Form 1040-X. Generally, to claim a refund you must file the amended return within 3 years after the date you filed your original return, or 2 years after you paid the tax, whichever is later. If you filed early, the 3 years run from the April filing deadline. You can e-file Form 1040-X for most recent years.

• Using old figures. The standard deduction, SALT cap and credit amounts changed for 2025. Figures from 2023 or 2024 are out of date.
• Claiming a deduction and a credit for the same expense. For example, you cannot use the same education expenses for both an education credit and another benefit.
• Forgetting the Social Security number rules. The new deductions and the Child Tax Credit need valid Social Security numbers.
• Assuming you must itemize to claim the new deductions. Tips, overtime, car loan interest and the senior deduction work with the standard deduction.
• Missing the phase-outs. Most deductions and credits shrink at higher income. Check MAGI limits before you count on them.
• Treating a car lease or used car as eligible. Only interest on a qualifying new vehicle loan counts.

Once you know which deductions and credits might apply, the quickest way to see what they are worth is to run the numbers. Our US calculator walks you through your income, deductions and credits one question at a time, then gives you an estimate of the refund you're entitled to. It is an estimate only, not tax advice.

All figures above were checked against these IRS pages in November 2026.

• IRS: Tax year 2025 inflation adjustments
• IRS: Tax year 2026 inflation adjustments, including the One, Big, Beautiful Bill
• IRS Topic no. 501, Should I itemize?
• IRS Topic no. 551, Standard deduction
• IRS: Working Families Tax Cuts, deductions for working Americans and seniors (FS-2025-03)
• IRS: Schedule 1-A, Additional Deductions (FS-2026-04)
• IRS: Working Families Tax Cuts provisions
• IRS Topic no. 503, Deductible taxes
• IRS Topic no. 502, Medical and dental expenses
• IRS Topic no. 505, Interest expense
• IRS Topic no. 506, Charitable contributions
• IRS Topic no. 456, Student loan interest deduction
• IRS Topic no. 458, Educator expense deduction
• IRS Topic no. 602, Child and Dependent Care Credit
• IRS: Child Tax Credit
• IRS: Earned Income Tax Credit tables
• IRS: Education credits (AOTC and LLC)
• IRS: 401(k) and IRA limits for 2025
• IRS Rev. Proc. 2024-25, 2025 HSA limits
• IRS Publication 969, Health Savings Accounts
• IRS: File an amended return