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US tax savings: 14 legal ways to cut your federal tax bill

Every saving below uses a published IRS figure for the 2025 tax year, with the official page beside it so you can check us. Nothing here is a scheme or a loophole, it is what the tax code says you may do.

Start with your own numbers

A list of savings is only worth something against your figures. Answer a few plain questions and Taxmiser shows which of these actually apply to you, in your state, with the amount you would keep and the IRS form each one goes on.

Money out of your taxable income before tax is worked out

These are the biggest levers for most employees and contractors, because they cut the income the IRS taxes at your top rate.

Put more into your 401(k)

Up to 23,500 out of taxable pay, plus 7,500 more from age 50

Money going into a traditional 401(k) is taken before federal income tax, so a 24 per cent taxpayer paying in the full 23,500 keeps about 5,640 that would otherwise go to the IRS. Employer matching is on top and does not use your limit.

IRS retirement plan limits

Claim a traditional IRA deduction

Up to 7,000, or 8,000 from age 50

If you are not covered by a workplace plan, or your income is inside the phase-out range, a traditional IRA payment comes straight off your income on Schedule 1, whether or not you itemise.

IRS IRA contribution limits

Use a health savings account

4,300 single, 8,550 family, plus 1,000 from age 55

An HSA is the only account that is deductible going in, untaxed while it grows, and untaxed coming out for medical costs. Paid through payroll it also escapes Social Security and Medicare tax.

IRS Publication 969

Deduct self-employed retirement and health cover

Up to 25 per cent of net self-employment earnings into a SEP

Contractors and business owners can deduct a SEP or solo 401(k) payment, half of their self-employment tax, and their own health insurance premiums, all above the line on Schedule 1.

IRS self-employed retirement plans

Deductions people leave on the table

You get the standard deduction or your itemised total, whichever is larger. It pays to check both every year.

Check the standard deduction against itemising

15,000 single, 30,000 married filing jointly

Most people take the standard deduction, but if your mortgage interest, state and local taxes (capped at 10,000) and charitable gifts beat it, itemising on Schedule A wins. Compare both, never assume.

IRS standard deduction

Bunch charitable giving into one year

Turns two below-threshold years into one itemising year

Give two years of donations in a single tax year, or use a donor-advised fund, so one year itemises above the standard deduction and the next takes the standard deduction anyway.

IRS charitable contributions

Take the qualified business income deduction

Up to 20 per cent of qualified business profit

Sole proprietors, partners and S corporation owners can deduct up to a fifth of qualified business income before tax is worked out. Income limits and service-business rules apply.

IRS qualified business income deduction

Claim the home office and mileage you actually have

5 dollars per square foot up to 300 feet, or actual costs

Self-employed only, not employees. Business mileage, a dedicated work room, phone and internet share, and equipment all reduce the profit that carries to Schedule C.

IRS home office deduction

Credits, which beat deductions dollar for dollar

A credit comes off the tax itself, and some are refundable, meaning you can be paid even with no tax to pay.

Earned income tax credit

Up to 8,046 with three or more children

A refundable credit for working people on lower pay. Millions who qualify never claim it, and you can claim up to three years back.

IRS earned income tax credit

Child tax credit

Up to 2,000 per qualifying child, partly refundable

Claimed on Form 1040 with Schedule 8812. There is also a credit of up to 500 for other dependants who do not qualify as children.

IRS child tax credit

Saver's credit on retirement payments

10, 20 or 50 per cent of the first 2,000 you save

A credit on top of the deduction for lower and middle income savers paying into a 401(k) or IRA. Claimed on Form 8880.

IRS retirement savings contributions credit

Education credits

Up to 2,500 per student, 1,000 of it refundable

The American Opportunity Credit for the first four years of college, or the Lifetime Learning Credit at 20 per cent of the first 10,000 of fees.

IRS education credits

Timing, investing and where you live

The same income taxed in a different year, a different account or a different state can produce a very different bill.

Use the 0 per cent capital gains band

48,350 single, 96,700 jointly of long-term gains at zero

Hold an asset more than a year and taxable income below the threshold, and the federal rate on the gain is zero. Selling across two tax years can keep you inside it.

IRS capital gains and losses

Harvest losses against gains

3,000 a year against ordinary income, the rest carried forward

Sell losing positions to cancel gains, but watch the 30-day wash sale rule if you buy the same security back.

IRS wash sales

Watch where you live

Up to about 13 per cent of income in state tax

Nine states charge no tax on wages, and others tax retirement income lightly. State tax is often the biggest single lever, and it is a real decision, not a paper one.

State tax by state

Pay estimated tax on time

Avoids the underpayment penalty and interest

Contractors, landlords and investors pay quarterly on Form 1040-ES. Paying the safe harbour amount stops a penalty being added to a bill you already owe.

IRS estimated taxes

Where the line is

Everything on this page is tax planning, which is legal and expected. Hiding income, inventing deductions, or leaving foreign accounts off an FBAR is evasion, which carries penalties and prosecution. Taxmiser will never help with that. If your situation is complex, a licensed CPA or enrolled agent is worth the fee.

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