Here are twelve proven strategies to legally reduce your federal income tax bill in 2025.
First, maximize your 401(k) contributions. Every dollar you contribute reduces your taxable income dollar for dollar. The limit is $23,500 for 2025. At the 22% bracket, maxing out saves you $5,170 in federal tax.
Second, contribute to a Health Savings Account (HSA) if you have a high-deductible health plan. The 2025 limits are $4,300 for individuals and $8,550 for families. HSAs offer a triple tax benefit: tax-deductible contributions, tax-free growth, and tax-free withdrawals for medical expenses.
Third, contribute to a Traditional IRA. The limit is $7,000 for 2025, or $8,000 if you are 50 or older. The deductibility depends on your income and whether you have a workplace retirement plan.
Fourth, claim the student loan interest deduction of up to $2,500 per year if your income is below the phase-out limits.
Fifth, use tax-loss harvesting to offset capital gains with capital losses. You can also deduct up to $3,000 in net capital losses against ordinary income.
Sixth, make charitable contributions. If you itemize, donations to qualified charities reduce your taxable income. Consider donating appreciated stock to avoid capital gains tax entirely.
Seventh, take advantage of the child tax credit of up to $2,000 per qualifying child under 17.
Eighth, contribute to a 529 education savings plan. While not federally deductible, over 30 states offer a state tax deduction for contributions.
Ninth, if you work from home, claim the home office deduction. The simplified method allows $5 per square foot up to 300 square feet ($1,500 maximum).
Tenth, consider timing income and deductions. If you expect lower income next year, defer income into that year and accelerate deductions into this year.
Eleventh, take advantage of the earned income tax credit (EITC) if your income qualifies. This credit can be worth up to $7,830 for families with three or more children.
Twelfth, if self-employed, deduct health insurance premiums, retirement plan contributions, and half of your self-employment tax.
Use our US take-home pay calculator with the 401(k) contribution field to see how retirement savings reduce your tax bill.