What a 2018 Form 1099-SSA tells the IRS about your disability benefits

The Form 1099-SSA is the document Social Security sends you each January to report the total benefits you received during the previous year. For 2018, you would have received this form in January 2019. It shows only one number: the gross amount of SSDI payments you got, before any taxes were withheld.

This form does not mean you owe taxes on all that money. SSDI itself is not automatically taxable. Whether you actually owe tax depends on your total income from all sources — wages, interest, pensions, and other benefits combined. The 1099-SSA is straightforward Social Security's record of what they paid you, and you use it to fill out your tax return accurately.

If you did not receive a 1099-SSA for 2018, you can request one from Social Security by calling 1-800-772-1213 or by visiting your local Social Security office. Keep the form with your tax records even if you do not think you owe tax, because the IRS has a copy too.

Key Takeaways

  • Form 1099-SSA reports your total 2018 SSDI payments but does not automatically mean that amount is taxable.
  • You report SSDI on your tax return using either Form 1040 or Form 1040-SR, depending on your age, along with the 1099-SSA.
  • Whether you owe tax on SSDI depends on your combined income from all sources, not on SSDI alone.
  • If you lost your 1099-SSA, Social Security can send you a replacement before the tax filing important date.

Where the 1099-SSA amount goes on your 2018 tax return

You report the amount from your 1099-SSA on Form 1040 or Form 1040-SR (the long form, not the short 1040-EZ, which was discontinued after 2017). The SSDI amount goes on the line labeled "Social Security benefits" in the income section. If you are married and filing jointly, both spouses' 1099-SSA amounts go on the same line, added together.

You do not file the 1099-SSA itself with your return. You keep it for your records. The IRS receives a copy directly from Social Security, so they already know the number you are reporting. If your return shows a different amount, the IRS will notice and contact you.

If you used tax software to file in 2018, the software walked you through entering this information and placed it in the correct spot automatically. If you filed by hand or with a tax preparer, they would have asked you for the 1099-SSA and entered it on the form.

How to calculate whether you actually owe tax on SSDI

The IRS uses a formula called combined income to decide if SSDI is taxable. Combined income means your adjusted gross income plus nontaxable interest plus half of your SSDI benefits. If that total is below a certain threshold, none of your SSDI is taxable. If it is above the threshold, some or all of it may be.

For 2018, the thresholds were $25,000 for single filers and $32,000 for married couples filing jointly. These numbers do not change year to year — they have been the same since 1984. If your combined income was below these amounts in 2018, you owed no tax on your SSDI, even though you had to report the full amount on your return.

If your combined income was above the threshold, you would use a worksheet in the tax instructions to calculate how much of your SSDI became taxable. This is a multi-step calculation, and mistakes are common. If you had other income sources in 2018 — wages, a pension, interest, or other benefits — a tax preparer or the IRS Free File program can help you work through it correctly.

What counts as income when calculating combined income

Combined income includes wages you earned, interest from savings accounts and bonds, dividends, capital gains, rental income, and income from self-employment. It also includes income from pensions, annuities, and other retirement accounts. Nontaxable interest — such as interest from municipal bonds — counts too, even though it is not taxable itself.

Some income does not count. Supplemental Security Income (SSI) is separate from SSDI and does not count toward the combined income calculation. Gifts do not count. Refunds of taxes you paid do not count. The key is whether the IRS counts it as income on your tax return — if it does, it counts toward combined income for the SSDI taxability test.

If you received other government benefits in 2018 — such as a pension from a government job where you did not pay Social Security tax — those amounts count too. This is a common source of confusion for people who worked for federal, state, or local government and now receive both a government pension and SSDI.

What to do if you owe tax on 2018 SSDI

If you calculated that some of your SSDI was taxable in 2018 and you did not pay tax at the time, you would owe it when you filed your return. You could pay it in full with your return, or if you could not pay in full, you could set up a payment plan with the IRS. The IRS allows monthly payment plans for amounts owed, and you can request one by phone or through the IRS website.

If you filed your 2018 return and did not report the taxable SSDI, and the IRS later contacted you, you would owe the unpaid tax plus interest and possibly penalties. The interest rate and penalty amounts vary depending on how long the debt went unpaid. If this happened to you, you can still file an amended return for 2018 using Form 1040-X, which corrects the original return.

Some people choose to have taxes withheld from their SSDI payments going forward to avoid owing a large amount at tax time. You can request this by completing Form W-4V and sending it to Social Security. You choose how much to withhold — 7%, 10%, 15%, or 25% of your monthly benefit. This does not change the amount of SSDI you receive; it just reduces the payment you get each month and sends the difference to the IRS.

Amended returns and correcting 2018 SSDI reporting errors

If you filed a 2018 return and later realized you made an error — such as reporting the wrong amount from your 1099-SSA, or miscalculating the taxable portion — you can file an amended return. Use Form 1040-X, which is the amended return form for individual income tax. You must file it within three years of the original return's due date, so for 2018 returns, the important date was April 15, 2021. If you are past that date, you cannot amend the return, but you may still owe the tax and interest.

When you file Form 1040-X, you explain what you are correcting and recalculate the tax owed. If the amendment results in a refund, the IRS will send it to you. If it results in more tax owed, you pay it with the amended return. Processing an amended return takes longer than a regular return — typically 8 to 12 weeks — and you should keep a copy for your records.

If you are unsure whether you made an error, the IRS Free File program or a tax preparer can review your 2018 return and advise you. Many tax preparation organizations offer free or low-cost help for people with low to moderate income.

Frequently Asked Questions

Do I have to file a tax return if I only received SSDI in 2018?

Not necessarily. If SSDI was your only income and your combined income was below the threshold ($25,000 for single filers, $32,000 for married filing jointly), you had no tax obligation. However, if you had other income — wages, interest, a pension — you may have had to file even if you owed no tax, because the IRS requires filing once your total income reaches a certain level. A tax preparer or the IRS can tell you whether you were required to file.

What if I lost my 2018 Form 1099-SSA?

Call Social Security at 1-800-772-1213 and request a replacement. They can mail it to you or provide the information over the phone. You can also visit your local Social Security office in person. If you need the form urgently, Social Security can sometimes provide the amount when ready by phone so you can file your return on time.

Can I file my 2018 taxes without the 1099-SSA if I remember the amount?

You can report the amount you remember, but if it does not match the 1099-SSA that Social Security sent to the IRS, the IRS will catch the discrepancy and contact you. It is safer to get the actual form or call Social Security to confirm the exact amount before you file.

If I had taxes withheld from my SSDI in 2018, do I still report the full amount on my return?

Yes. The 1099-SSA shows the gross amount before withholding. You report that full amount on your return, and the withheld taxes appear on a separate line as a credit against what you owe. This is how withholding works for all income sources.

What if my SSDI was suspended or stopped during 2018?

The 1099-SSA will show only the benefits you actually received during the months you were may be able to access. If your benefits were suspended partway through the year, the form reflects that. Report the amount shown on the 1099-SSA, not what you might have received if benefits had continued all year.