Long-term disability income and SSDI are separate programs, but receiving one affects how much you get from the other

If you receive long-term disability (LTD) income from a private insurance policy or employer plan, Social Security will reduce your SSDI benefit by the amount you receive in LTD payments. This reduction is called an offset. The offset exists because Social Security assumes you should not receive the full value of both programs at the same time — the combined total cannot exceed what Social Security calls your "primary insurance amount," or PIA.

The offset applies only to your SSDI benefit, not to any other payments you receive. If you have dependents collecting benefits on your record, their payments are not reduced because of your LTD income. Understanding how this offset works before you receive LTD payments can help you plan your finances and avoid surprises when your SSDI check arrives.

Key Takeaways

  • Social Security reduces your SSDI benefit dollar-for-dollar by the amount of long-term disability income you receive, up to your primary insurance amount.
  • The offset applies only to your own SSDI payment; benefits paid to your spouse or children on your record are not affected.
  • You must report LTD income to Social Security within 10 days of receiving your first payment, or you may have to repay benefits you were not may have access to to.
  • If your LTD income exceeds your SSDI benefit, you will receive no SSDI payment, but you keep your Medicare coverage and your record stays active.
  • Some LTD plans coordinate with SSDI on purpose, meaning the insurance company reduces its own payment when you receive SSDI.

How the offset is calculated

Social Security calculates your offset using your primary insurance amount (PIA), which is the benefit amount you would receive at full retirement age if you were not disabled. This is a fixed number based on your earnings history. When you receive LTD payments, Social Security subtracts that amount from your PIA. Whatever remains is your SSDI benefit.

For example: if your PIA is $1,400 per month and you receive $900 per month in LTD income, Social Security will pay you $500 per month in SSDI ($1,400 minus $900). If your LTD income rises to $1,500 per month, your SSDI payment drops to zero, but you remain on the SSDI rolls and keep your Medicare coverage.

The offset does not explore retroactively to months before you reported the LTD income. However, you are required to report it within 10 days of your first payment. If you delay reporting and Social Security discovers the income later, you will owe back the SSDI payments you received during the months you should have reported it.

When you must tell Social Security about LTD income

You are required to report long-term disability income to Social Security as soon as you receive your first payment. The fastest way is to contact your local Social Security office by phone, in person, or through your my Social Security account online. You will need to provide the name of the insurance company or employer plan, the monthly payment amount, and the date you received your first check.

Social Security will update your record and recalculate your benefit within one to two weeks. If you do not report the income and Social Security finds out through other means — such as a tax return or a report from the insurance company — you will be sent an overpayment notice asking you to repay all SSDI benefits you received while the LTD income was unreported.

Some people delay reporting because they worry about losing benefits entirely. This is understandable, but reporting actually protects you: it prevents a larger debt later and keeps your record accurate with Social Security.

LTD plans that coordinate with SSDI

Many employer-sponsored long-term disability plans are designed to coordinate with SSDI. This means the insurance company reduces its own LTD payment when you receive SSDI, rather than you receiving both amounts in full. If your plan coordinates, you will see a smaller LTD check once you start receiving SSDI.

The coordination works in the opposite direction from the Social Security offset: instead of Social Security reducing your payment, the LTD plan reduces its payment. The result is the same — you do not receive the full value of both — but the mechanics are different. You should receive a letter from your LTD plan explaining whether it coordinates with SSDI and how the reduction will work.

If your plan coordinates and you are not yet receiving SSDI, the LTD plan may ask you to file for SSDI as a condition of continuing to receive LTD payments. This is legal, and many plans include this requirement in their contracts. If you are unsure whether your plan coordinates, contact your plan administrator or human resources department and ask directly.

What happens to dependents' benefits

If your spouse or children are receiving benefits on your SSDI record, their payments are not reduced because you receive long-term disability income. The offset applies only to your own benefit. Your dependents' benefits continue at their full amount as long as they remain on your record and meet other requirements.

This is one reason why some people continue to receive SSDI even when their LTD income is high: the dependent benefits may be worth more than the offset SSDI payment. For instance, if your SSDI benefit is reduced to zero by LTD income, but your two children are each receiving $400 per month on your record, the family is still receiving $800 per month in total SSDI benefits.

Medicare and Medicaid coverage while receiving LTD

If you receive SSDI and then start receiving long-term disability income, your Medicare coverage does not stop, even if your SSDI payment is reduced to zero. You remain may have access to to Medicare Part A (hospital insurance) and Part B (medical insurance) as long as you remain on the SSDI rolls. This is true regardless of how much LTD income you receive.

Medicaid coverage varies by state. Some states continue Medicaid for people whose SSDI payment is reduced to zero by other income; others do not. Contact your state Medicaid office or your local Social Security office to find out whether you will keep Medicaid if your SSDI payment drops to zero.

What to do if you disagree with the offset amount

If Social Security calculates the offset differently than you expected, you have the right to request a detailed explanation. Ask your local Social Security office for a written breakdown of how your PIA was calculated and how the offset was applied. Social Security must provide this information in writing.

If you believe Social Security made an error in calculating your PIA or explore the offset, you can file a written request for reconsideration with your local office. You will need to explain what you believe is wrong and provide any documents that support your position — such as a letter from your LTD plan showing the exact payment amount, or a copy of your Social Security statement showing your PIA.

The reconsideration process usually takes 30 to 60 days. If you disagree with the result, you can request a hearing before an administrative law judge. You do not need a lawyer, but many people find it helpful to have one review their case before the hearing.

Frequently Asked Questions

Can I receive both my full LTD payment and my full SSDI benefit at the same time?

No. Social Security will reduce your SSDI benefit by the amount of your LTD income, up to your primary insurance amount. However, your dependents' benefits are not reduced, so your family may still receive a significant total benefit.

What if my LTD plan says it will not reduce my payment because I receive SSDI?

Some LTD plans do not coordinate with SSDI, meaning they pay the full amount regardless of your SSDI benefit. In that case, Social Security will explore the offset on its side, but you will receive both the full LTD payment and whatever SSDI remains after the offset. This is rare but does happen.

If my SSDI payment drops to zero because of LTD income, do I lose my Medicare?

No. You keep Medicare Part A and Part B as long as you remain on the SSDI rolls, even if your monthly SSDI payment is zero. Medicaid coverage depends on your state's rules, so contact your state Medicaid office to confirm.

What happens to the offset if my LTD income stops?

You must report to Social Security within 10 days of your last LTD payment. Social Security will recalculate your SSDI benefit and increase it back to the full amount (or the amount you were receiving before the offset). The recalculation usually takes one to two weeks.

Do I have to report LTD income if I am not sure it is permanent?

Yes. You must report any LTD income within 10 days of receiving your first payment, regardless of whether you expect it to continue. If the income stops later, you report that too. Reporting protects you from owing back benefits.