Turning 70 does not end your obligation to pay federal income tax. The Internal Revenue Code sets no age at which taxes stop; whether you have to pay income tax after age 70 depends on how much income you receive during the year and what kind of income it is. What does change with age are the numbers: seniors get a higher filing threshold, a larger standard deduction, and, for 2025 through 2028, a new $6,000 per-person deduction that lets many older Americans earn well into five figures before they owe anything.
When a Senior Has to File a Federal Return
Section 6012 of the Internal Revenue Code sets the filing rule: you must file a return if your gross income equals or exceeds the threshold for your filing status and age.1Office of the Law Revision Counsel. 26 USC 6012 – Persons Required to Make Returns of Income Gross income covers nearly everything you take in during the year: the taxable portion of Social Security, withdrawals from traditional retirement accounts, pensions, interest, dividends, capital gains, and any wages.
For 2026, the base standard deduction is $16,100 for single filers, $32,200 for married couples filing jointly, and $24,150 for head of household.2Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026, Including Amendments From the One, Big, Beautiful Bill Because the filing threshold tracks the total standard deduction available to you, being 65 or older raises the point at which you have to file. The approximate 2026 thresholds:
- Single, 65 or older: about $22,100
- Married filing jointly, both spouses 65 or older: about $44,200
- Married filing jointly, one spouse 65 or older: about $38,200
- Head of household, 65 or older: about $30,150
Below those numbers, you generally don’t need to file. Filing anyway can still make sense if you had tax withheld and want it refunded, or if you qualify for a refundable credit. If you were required to file and didn’t, the failure-to-file penalty is 5% of the unpaid tax per month, capped at 25%.3Internal Revenue Service. Failure to File Penalty
The New $6,000 Senior Deduction
The One, Big, Beautiful Bill added a $6,000 deduction for each taxpayer age 65 or older, available for tax years 2025 through 2028.4Internal Revenue Service. New and Enhanced Deductions for Individuals It stacks on top of the regular standard deduction. A married couple both over 65 filing jointly can shield roughly $44,200 of income in 2026 before any federal tax applies.
The practical effect is that a single 70-year-old with $20,000 in combined Social Security and pension income sits below the filing threshold and likely owes nothing federally. That same income would have triggered a tax bill under prior law.
How Different Kinds of Retirement Income Are Taxed
Social Security Benefits
Social Security is not automatically tax-free. Whether any of your benefits get taxed depends on your “provisional income”: adjusted gross income, plus tax-exempt interest, plus half of your Social Security benefits. The thresholds are set by statute and haven’t been adjusted for inflation since 1993.5Office of the Law Revision Counsel. 26 USC 86 – Social Security and Tier 1 Railroad Retirement Benefits
For single, head of household, and qualifying surviving spouse filers:
- Provisional income below $25,000: no benefits taxed
- $25,000 to $34,000: up to 50% of benefits may be taxed
- Above $34,000: up to 85% of benefits may be taxed
For married couples filing jointly:
- Provisional income below $32,000: no benefits taxed
- $32,000 to $44,000: up to 50% of benefits may be taxed
- Above $44,000: up to 85% of benefits may be taxed
“Up to 85% taxable” is not a tax rate. It means up to 85% of the benefit amount is added to your taxable income and taxed at your ordinary rate.6Internal Revenue Service. IRS Reminds Taxpayers Their Social Security Benefits May Be Taxable A retiree living mainly on a modest Social Security check often owes nothing on the benefits themselves.
A separate note on state taxes: roughly 13 states tax Social Security benefits in some form. Your state return can produce a bill even when your federal return doesn’t.
Traditional IRAs, 401(k)s, and Pensions
Money coming out of traditional IRAs, 401(k)s, and similar tax-deferred accounts is taxed as ordinary income in the year you receive it. Pensions from a former employer are fully taxable unless the plan included after-tax contributions.
Roth IRAs
Roth IRAs flip the arrangement. Contributions were after-tax, so qualified withdrawals are entirely free of federal income tax. Once you’re past 59½ and at least five tax years have passed since your first Roth contribution, both principal and earnings come out untaxed.7Internal Revenue Service. Retirement Plan and IRA Required Minimum Distributions FAQs Roth IRAs are also exempt from lifetime required minimum distributions, and because Roth withdrawals don’t count toward provisional income, they won’t push more of your Social Security into the taxable range.
Long-Term Capital Gains
Selling investments held more than a year triggers long-term capital gains rates, which sit below ordinary income rates. For 2026, the 0% long-term rate applies to taxable income up to $49,450 for single filers, $98,900 for joint filers, and $66,200 for head of household. The 15% rate applies above that, and 20% starts at $545,500 single and $613,700 joint.2Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026, Including Amendments From the One, Big, Beautiful Bill Many retirees with moderate income fall entirely inside the 0% band and can sell appreciated assets without owing federal tax on the gain. Assets held a year or less get taxed at ordinary rates.
Required Minimum Distributions Starting at 73
Once you reach age 73, you must begin taking Required Minimum Distributions from traditional IRAs, 401(k)s, and similar accounts each year.8Office of the Law Revision Counsel. 26 USC 401 – Qualified Pension, Profit-Sharing, and Stock Bonus Plans The RMD age rises to 75 for people who turn 74 after December 31, 2032. Your first RMD is due by April 1 of the year after you reach the applicable age; every RMD after that is due by December 31.
Missing an RMD carries a 25% excise tax on the shortfall — the amount you should have withdrawn but didn’t.9Office of the Law Revision Counsel. 26 USC 4974 – Excise Tax on Certain Accumulations in Qualified Retirement Plans Catching it and correcting the shortfall during the correction window, generally before the IRS contacts you, cuts the penalty to 10%.
Using Qualified Charitable Distributions to Lower the Bill
If you’re 70½ or older with a traditional IRA, you can send money directly from the IRA to an eligible charity as a Qualified Charitable Distribution. The 2026 limit is $111,000 per person, and each spouse can donate up to the limit from their own IRA.10Internal Revenue Service. 2026 Amounts Relating to Retirement Plans and IRAs, as Adjusted for Changes in Cost-of-Living The QCD counts toward your RMD but stays out of your adjusted gross income entirely.
That’s a better result than taking the distribution and then deducting a charitable gift, because a lower AGI can keep Social Security benefits out of the taxable range and can protect other income-sensitive tax benefits. The transfer must go directly from the IRA custodian to the charity. Pulling the money into your own account first breaks the treatment.
Paying: Withholding or Quarterly Estimates
Without an employer running payroll withholding, you may need to make quarterly estimated payments. The requirement kicks in when you expect to owe at least $1,000 in federal tax for the year after withholding and credits, and your withholding is projected to cover less than 90% of the current year’s tax or 100% of last year’s (110% if your prior-year AGI topped $150,000).11Internal Revenue Service. Form 1040-ES, Estimated Tax for Individuals
The 2026 quarterly deadlines are April 15, June 15, September 15, and January 15, 2027. You can skip the January payment by filing the full return and paying any balance by February 1, 2027. Many retirees find it simpler to have federal tax withheld directly from Social Security using Form W-4V, or from pension and annuity payments using Form W-4P, which sidesteps the quarterly filing altogether.
Credits and Deductions That Trim What You Owe
Credit for the Elderly or the Disabled
If you’re 65 or older with low to moderate income, the Credit for the Elderly or the Disabled ranges from $3,750 to $7,500 but phases out at modest income levels.12Internal Revenue Service. Credit for the Elderly or the Disabled at a Glance For a single filer, the credit generally disappears once AGI reaches $17,500 or nontaxable Social Security and pension income reaches $5,000. For a married couple filing jointly where both qualify, those cutoffs are $25,000 and $7,500. You claim it on Schedule R.
Medical and Dental Expenses
If you itemize, you can deduct unreimbursed medical and dental expenses that exceed 7.5% of your adjusted gross income.13Internal Revenue Service. Publication 502, Medical and Dental Expenses Qualifying costs include doctor visits, prescriptions, hospital care, hearing aids, dental work, and qualified long-term care services. Long-term care insurance premiums are partially deductible, with an age-based cap: for 2025, the maximum deductible premium is $6,020 per person at age 71 or older and $4,810 for ages 61 through 70.
With the new $6,000 senior deduction pushing the standard deduction higher, fewer seniors will benefit from itemizing. But for those with heavy medical bills or long-term care costs, itemizing can still produce the lower federal tax bill.