Is your Social Security taxable? A short guide
How to test whether any of your Social Security or railroad retirement benefits are taxed, how much, and where it goes on the return. Notes for tax years 2023 to 2026.
Prepared by Prem Tax and Accounting Corp. Last checked against official sources on October 26, 2026.
Chapter 7 of Publication 17 explains whether your Social Security checks, and the Social Security-equivalent slice of tier 1 railroad retirement pay, are taxable, and by how much. It matters most to retirees, survivors and people on disability who also have other income. The 2025 edition has it on printed pages 62 to 66, and the 2023 and 2024 editions run to page 67. Think of this page as a friendly summary; the IRS publication has the last word.
- Many people owe nothing on their benefits. The test adds half your benefits, your other income and tax-exempt interest.
- The base amounts are $25,000 for single filers and $32,000 for joint filers (2023 to 2025).
- At most 85 percent of benefits can ever be taxed. Supplemental Security Income (SSI) is not taxed.
- Net benefits are in box 5 of your SSA-1099 or RRB-1099. Put that net figure on line 6a and the taxable portion on line 6b.
The two-step test
First add half of your net benefits, all your other income and any tax-exempt interest. On a joint return, combine both spouses' income even if only one gets benefits. Then compare the total with your base amount. The same limits applied in 2023, 2024 and 2025.
| Filing status | Up to 50% taxed above | Up to 85% taxed above |
|---|---|---|
| Single, head of household, qualifying surviving spouse | $25,000 | $34,000 |
| Married filing jointly | $32,000 | $44,000 |
| Separate, lived apart all year | $25,000 | $34,000 |
| Separate, lived together at any time | $0 | Up to 85% from the first dollar |
Reporting and special cases
- Net benefits are box 3 minus box 4 (repaid). Enter 0 on line 6b if none is taxable. The worksheet is in the Form 1040 instructions and Pub 915.
- A lump-sum payment for earlier years can be figured on those years' income if that lowers your tax. Check line 6c and do not amend the earlier return.
- If you repaid more than you received this year, none is taxable, and a repaid amount over $3,000 (all three editions) may earn a deduction or credit. Up to $3,000 earns nothing.
- You can ask for tax to be withheld with Form W-4V. Otherwise you may owe estimated tax.
Changes from 2023 to 2026
The dollar amounts did not change from 2023 to 2025. They are not indexed, so 2026 planning uses the same ones. One filing detail did change: separate filers who lived apart all year check a box on line 6d in the 2025 edition, while the 2023 and 2024 editions had you write the letter D beside "benefits" on line 6a. The new senior deduction (up to $6,000 per person, 2025 to 2028) is separate and does not change this test; see chapter 10. Pub 17 (2026) is not published yet.
An invented example
A single filer (invented) in 2025 has $20,000 of net benefits, a $16,000 taxable pension and $2,000 of taxable interest, and nothing else.
- Test total: $10,000 (half of benefits) + $16,000 + $2,000 = $28,000.
- Over the $25,000 base by $3,000.
- Taxable benefits: 50% x $3,000 = $1,500. Line 6a is $20,000 and line 6b is $1,500.
Mistakes people make
- Leaving tax-exempt interest out of the test.
- Starting from the gross figure in box 3 when the net figure in box 5 is the one to use.
- Leaving out a husband's or wife's earnings on a joint return just because that person receives no benefits.
- Assuming 85 percent is always taxed. It is a ceiling.
Quick check
A married couple filing jointly has $24,000 of net benefits and $30,000 of other income, no tax-exempt interest. What is taxable? (2025)
Answer: $5,000. Test total = $12,000 + $30,000 = $42,000, which is $10,000 over $32,000 and under $44,000, so 50% x $10,000.
You file separately and lived with your spouse in March. What is your base amount? (2024)
Answer: $0, and up to 85 percent of benefits can be taxed.
Your form shows $15,000 in box 3 and $2,500 in box 4. What goes on line 6a? (2025)
Answer: $12,500, the net benefits ($15,000 - $2,500).
Common questions
Is SSI taxable?
No. SSI and the lump-sum death benefit are not taxed.
Do I have to file when Social Security is all I receive?
Usually not. With other income you may still need to file, even if none of your benefits is taxable; see [chapter 1](/publication-17/chapter-1-filing-information/).
Can I have tax taken out of my benefits?
Yes, with Form W-4V. If you skip it, see [chapter 4](/publication-17/chapter-4-tax-withholding-and-estimated-tax/) on estimated tax.
Official sources
- IRS Publication 17 (2025), chapter 7
- IRS Publication 17 (2024), chapter 7
- IRS Publication 17 (2023), chapter 7
- IRS Publication 915 (2025), Social Security and Equivalent Railroad Retirement Benefits
- IRS fact sheet FS-2025-03 on the 2025 law deductions
Keep reading
- Interest Income: Pub 17 Chapter 6 in Plain English
- Other Income: Pub 17 Chapter 8 in Plain English
- Standard Deduction 2023 to 2026: Pub 17 Chapter 10
- Withholding and Estimated Tax (Pub 17 Chapter 4)
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