Long-Term Disability and SSDI Are Separate Programs That Often Run in Parallel

Long-term disability (LTD) insurance and Social Security Disability Insurance (SSDI) are two different programs with different rules, different payers, and different timelines. LTD is insurance you buy through an employer or purchase privately; SSDI is a federal program funded by payroll taxes. You can receive both at the same time, but the amount you get from one may reduce the amount you get from the other. Understanding how they interact matters because the offset rules can shrink your total monthly income in ways that are not always obvious.

The key difference: LTD replaces a percentage of your salary while you are unable to work. SSDI is a flat monthly benefit based on your lifetime earnings record. LTD typically pays faster (within weeks to a few months), while SSDI can take one to three years to approve. Many people receive LTD first, then later receive SSDI, and the two programs coordinate their payments.

Key Takeaways

  • LTD insurance pays you directly based on your salary; SSDI is a federal benefit based on your work history, and you can receive both simultaneously.
  • LTD usually pays within weeks to months; SSDI takes months to years, so most people receive LTD income first while waiting for SSDI approval.
  • If you receive both, your LTD insurer may reduce your LTD payment by the amount of your SSDI benefit — this is called an offset.
  • You must report your SSDI approval to your LTD insurer when ready, because the offset is usually retroactive to the month you were approved.
  • Your LTD plan document spells out the exact offset rules; some plans offset dollar-for-dollar, others offset only a portion, and a few offset nothing.

How Long-Term Disability Insurance Pays

Long-term disability insurance is a contract between you and an insurance company (usually through your employer). It replaces a portion of your gross salary — typically 50 to 70 percent — when you cannot work due to illness or injury. The waiting period (called the elimination period) is usually 90 to 180 days after you stop working. During that time, you receive nothing from LTD; you may receive short-term disability or paid leave instead.

Once the elimination period ends and your claim is approved, LTD begins paying you monthly. The payment continues until you return to work, reach age 65, or the benefit period ends (which varies by plan — it might be two years, five years, or until age 65). LTD is taxable income if your employer paid the premiums; it is tax-free if you paid the premiums yourself.

LTD insurers require ongoing proof that you remain disabled. You will submit medical records, attend independent medical exams, and report any work activity. If you start working part-time or your condition improves, your LTD payment may be reduced or stopped.

How SSDI Works and Why the Timeline Matters

SSDI is a federal insurance program. You become insured by paying Social Security taxes (FICA) during your working years. When you become disabled, you file a claim with the Social Security Administration (SSA). The SSA reviews your medical evidence, work history, and age to decide whether you meet their definition of disability — which is stricter than most LTD plans. The process typically takes three to six months for an initial decision, though many claims are denied and require an appeal, which can add another year or more.

If approved, your SSDI benefit is calculated based on your average lifetime earnings. The amount does not change based on your current need or your other income sources. In 2024, the average SSDI benefit is around $1,550 per month, but this varies widely depending on your work history. You can work part-time and earn up to a certain amount (called substantial gainful activity, or SGA) without losing your benefit, but exceeding that limit can end your SSDI.

Because SSDI takes so long to approve, most people who have LTD insurance receive LTD payments for months or years before SSDI is approved. This is normal and expected.

How the Offset Works When You Receive Both

An offset is a reduction in your LTD payment when you also receive SSDI. The logic behind it is that the combination of LTD and SSDI should not exceed what you would have earned if you were working. However, the exact offset rules depend entirely on your LTD plan document.

Most employer-sponsored LTD plans include an offset clause. The most common version is a dollar-for-dollar offset: for every dollar of SSDI you receive, your LTD payment is reduced by one dollar. For example, if your LTD benefit is $3,000 per month and you are approved for $1,500 per month in SSDI, your new LTD payment becomes $1,500 (the $3,000 minus the $1,500 SSDI). Your total income is $3,000 — the same as before — but now it comes from two sources instead of one.

Some plans use a partial offset, reducing LTD by only 50 percent of your SSDI amount, or they offset only benefits you receive for dependents (such as payments to your children). A small number of plans have no offset at all, though this is rare. Your plan document will state the exact formula.

The offset is usually retroactive to the month you were approved for SSDI, not the month you report it. This means your LTD insurer may demand repayment of the difference between what they paid you and what they should have paid under the offset rule. For example, if you were approved for SSDI in January but did not report it until June, the insurer may ask you to repay five months of overpayment.

What Happens When Your SSDI Claim Is Denied or Appealed

If the SSA denies your SSDI claim, your LTD payments continue unchanged. You can file a reconsideration (the first level of appeal) or request a hearing before an administrative law judge. During the appeal process, you receive no SSDI income, so no offset applies. Your LTD continues at the full rate.

If you win your appeal and are approved for SSDI retroactively — meaning the SSA decides your disability began before the approval date — you may receive a large back-payment. Your LTD insurer will explore the offset to this back-payment as well. For example, if you are approved retroactively to January and receive a $15,000 lump sum, the insurer may claim that you were overpaid during those months and deduct the offset amount from the back-payment or from future LTD payments.

This is one reason to report your SSDI approval to your LTD insurer when ready: the sooner they know, the sooner they can calculate the offset accurately and avoid confusion later.

Reporting Your SSDI Approval to Your LTD Insurer

When the SSA approves your SSDI claim, you will receive a notice in the mail stating your approval date and your monthly benefit amount. You must send a copy of this notice to your LTD insurer within 30 days (check your plan document for the exact important date). Include a cover letter with your claim number, the approval date, and your monthly SSDI amount.

Send the notice to the address listed in your LTD plan documents or on your most recent LTD statement. Keep a copy for your records and send it via certified mail if possible, so you have proof of delivery. Do not assume your employer will forward it; contact your LTD insurer directly.

After the insurer receives your notice, they will recalculate your LTD benefit using the offset formula in your plan. They will send you a new payment schedule and may ask for repayment if they overpaid you during the months between your SSDI approval and your report. This process usually takes two to four weeks.

How This Affects Your Work Incentives and Earnings

Both LTD and SSDI have rules about how much you can earn while receiving benefits. These rules are separate and do not always align, which can create confusion.

For SSDI, you can earn up to the SGA limit (in 2024, this is $1,550 per month for non-blind individuals, but the amount changes yearly) without losing your benefit. If you exceed SGA, your SSDI stops, but you may be may be able to access for a trial work period that allows you to test your ability to work without when ready losing benefits.

For LTD, the rules depend on your plan. Some plans allow you to earn a small amount without penalty. Others reduce your LTD payment by a percentage of your earnings. Still others stop your LTD entirely if you earn any income above a certain threshold. Your plan document will specify this.

If you return to part-time work, you must report your earnings to both SSDI and your LTD insurer. Failing to report can result in overpayment, which you will be required to repay.

Frequently Asked Questions

Can I receive LTD and SSDI at the same time?

Yes. You can receive both programs simultaneously. However, your LTD payment will likely be reduced by the amount of your SSDI benefit if your plan includes an offset clause. The total of both payments usually does not exceed what your LTD benefit would have been alone.

What if my LTD plan has no offset clause?

If your plan document states there is no offset, you can receive the full LTD payment plus the full SSDI payment with no reduction. This is uncommon but does happen with some union plans and older employer plans. Check your plan document or contact your LTD insurer to confirm.

Do I have to report my SSDI approval to my LTD insurer?

Yes. Your plan document likely requires you to report it within 30 days. Failing to report can result in overpayment claims and may delay the offset calculation. Send a copy of your SSDI approval notice to your LTD insurer by certified mail and keep proof of delivery.

What happens to my LTD if my SSDI is denied?

Your LTD continues unchanged. No offset applies because you are not receiving SSDI. If you appeal the SSDI denial and later win, the offset will be applied retroactively, which may result in an overpayment claim from your LTD insurer.

Can I work part-time while receiving both LTD and SSDI?

It depends on your LTD plan and your SSDI status. You can earn up to the SSDI SGA limit without losing SSDI, but your LTD plan may have stricter rules about work activity. Report any earnings to both programs when ready to avoid overpayment.