You still have to file and pay income tax after 75 if your income exceeds the threshold

Turning 75 does not stop your tax obligation. The IRS does not give anyone a pass on income tax based on age alone. What changes at 75 is the income threshold — the amount you can earn before you are required to file a return. Once your income crosses that line, you file and pay like anyone else.

The threshold depends on your filing status and the type of income you have. A single person age 75 with only wage income has a higher threshold than a single person age 65, but the difference is small. If you have investment income, self-employment income, or other sources, the rules shift. The key is knowing your own numbers, not your age.

Key Takeaways

  • The IRS requires you to file a tax return if your income exceeds the threshold for your age and filing status, regardless of how old you are.
  • At age 75, your standard deduction is higher than it is at 65, which raises the income threshold before filing becomes mandatory.
  • Self-employment income, investment income, and Social Security can all count toward the threshold and may push you over the filing requirement.
  • Filing even when you are not required can be worthwhile if you had taxes withheld or are due a refund.

Income thresholds for people age 75 and older

For the 2024 tax year, a single person age 75 with only wage income must file if their gross income is $15,000 or more. A married couple filing jointly, both age 75 or older, must file if their combined gross income is $30,000 or more. These numbers are based on the standard deduction, which is higher for people 65 and older.

These thresholds change each year because the IRS adjusts the standard deduction for inflation. The threshold for 2025 will be different from 2024. You can find the current year's threshold on the IRS website or by asking a tax professional. Do not assume last year's number applies.

If you are married and only one spouse is 75 or older, the threshold is different — it sits between the threshold for a couple where both are under 65 and the threshold where both are 75 or older. The filing status matters as much as the age.

Types of income that count toward the filing threshold

Wage income from a job counts in full. If you work part-time or full-time after 75, every dollar goes toward the threshold. Your employer should send you a W-2 form by January 31 showing what you earned.

Self-employment income counts, but the rule is different. You must file if your net self-employment income is $400 or more, regardless of age or other income. This applies whether you are 75 or 25. If you run a business or do freelance work, this threshold often kicks in before the wage-based threshold does.

Investment income — dividends, capital gains, interest — counts toward the threshold. If you have $15,000 in wages and $2,000 in dividends, your total is $17,000, which exceeds the threshold for a single person age 75. You must file even though neither source alone would require it.

Social Security benefits are usually not taxable, but they can push other income over the threshold. If you have $12,000 in wages and $5,000 in Social Security, you count only the $12,000 toward the threshold — but the Social Security matters for a different tax calculation. In some cases, part of your Social Security becomes taxable, which complicates the picture. A tax professional can sort this out.

What happens if you do not file when you should

The IRS can assess a failure-to-file penalty if you owe tax and do not submit a return. The penalty is usually 5 percent of the unpaid tax for each month the return is late, up to 25 percent total. If you owe no tax, there is no penalty, but you will not know that without calculating your liability or having someone do it for you.

If you had taxes withheld from paychecks or made estimated tax payments, you may be due a refund. Filing late means your refund is delayed. The IRS does not pay interest on refunds, but you do lose the use of that money in the meantime. If you are owed a refund, filing sooner rather than later makes sense.

The IRS can also pursue back taxes and penalties years later if they discover you should have filed. Staying current is simpler than dealing with a notice later.

When to file even if you are not required to

You may want to file a return even if your income is below the threshold. If your employer withheld federal income tax from your paychecks, filing gets you a refund of the amount withheld. The withholding was not optional — it came out of your pay — so reclaiming it through a return makes sense.

If you made estimated tax payments during the year, filing allows you to claim credit for those payments. Without a return, the IRS keeps the money.

If you are self-employed and your net income is below $400, you do not have to file for Social Security tax purposes, but you may still want to. Filing builds your Social Security record, which can affect your benefit amount if you have not yet claimed or if you are still working.

How to determine your exact filing requirement

The safest approach is to add up all your income for the year — wages, self-employment, investments, rental income, anything the IRS considers income — and compare it to the threshold for your age and filing status. If you are unsure whether something counts, include it in the total.

If the total is close to the threshold, file. The cost of filing is usually less than the cost of getting it wrong. A tax professional or a free tax preparation service can walk through your situation and tell you whether you must file.

The IRS also publishes a worksheet on its website that walks through the calculation. It is not glamorous, but it is free and accurate.

Frequently Asked Questions

Does Medicare affect my tax filing requirement?

No. Medicare premiums and enrollment do not count as income and do not change your filing threshold. However, if you have high income, you may pay higher Medicare premiums under the Income-Related Monthly Adjustment Amount (IRMAA) rules. That is a separate calculation from your tax filing requirement.

What if I have a pension and Social Security but no wages?

Pension income counts toward the filing threshold just like wages do. Social Security usually does not, but it can affect whether part of your pension becomes taxable. Add your pension to any other income and compare to the threshold. If you are over it, you must file.

Can I file taxes after age 75 if I did not file in previous years?

Yes. The IRS generally allows you to file back returns for the past six years. If you owed tax in those years, you will owe penalties and interest on top of the tax itself. A tax professional can help you file back returns and negotiate with the IRS if needed.

Do I have to file if I only have investment income under the threshold?

Not if your total income is below the threshold for your age and filing status. However, if you had taxes withheld on dividends or interest, filing gets you a refund. It is worth checking whether you are owed money before deciding to skip filing.

What if my income varies year to year?

Check your filing requirement each year based on that year's income and the current threshold. A year when you earn less than the threshold does not require a return. A year when you earn more does. Do not assume one year's situation applies to the next.