Workers Comp Lump Sum Settlements and SSDI Offset in 2026: How Proration Works, the Magic Language That Protects Your Check, and Reverse Offset States

By Anthony Albert, Benefits Research Director. Updated May 15, 2026.

If you're collecting both SSDI and workers comp and your WC case is moving toward settlement, your settlement language can swing your SSDI offset by hundreds of dollars a month. We're not exaggerating. The same lump sum, written two different ways, can trigger zero offset or wipe out your SSDI for years.

This is the piece almost nobody reads before they sign. WC attorneys focus on the WC merits. SSDI attorneys (if you have a separate one) get a copy of the agreement after the ink is dry. Then SSA cuts the SSDI check, and you find out what the proration clause should have said.

This guide walks through the 80 percent ACE cap, POMS DI 52150.060 proration rules, the Hartman life-expectancy formula, the 14 reverse offset states where SSA can't even apply WC offset, excludable expenses you can stack off the top, and the exact settlement language to push for. It uses the 2026 SSA numbers (average SSDI $1,630/month, max $4,152, COLA 2.8 percent applied January 2026) and the current POMS DI 52100 series effective 03/10/2026.

The 80 Percent ACE Cap, Explained Without the Jargon

Federal law (42 USC 424a) says you can collect SSDI and workers comp at the same time. But your combined check can't push you above 80 percent of what you used to earn before the disability. The number SSA uses for "what you used to earn" is called Average Current Earnings, or ACE.

SSA computes ACE three ways and picks whichever is highest:

• AIME method. Your Average Indexed Monthly Earnings (the same number SSA uses to compute your PIA) times 12, divided by 12. This is your standard SSDI earnings record.
• High-5 method. Your five highest-earning years, indexed for inflation, averaged.
• High-1 method. Your highest single calendar year, either the year you became disabled or the year before, unindexed.

The highest number wins. SSA then takes 80 percent of that as your monthly combined ceiling. If your SSDI plus prorated WC stays under the ceiling, no offset. If it pushes over, SSA reduces SSDI by the excess.

Worked Example: Iowa Plumber, $4,500/month Average Earnings

Carlos was a union plumber in Iowa earning $4,500/month (high-1 method wins). His 80 percent cap is $3,600. SSDI is $2,200/month. He settles his WC case and SSA prorates the lump sum at $1,800/month. Combined: $4,000. Excess over the cap: $400. SSA reduces SSDI by $400, paying $1,800 instead of $2,200.

Now flip it. Same Carlos, same SSDI, but the WC settlement language stretches the proration over his remaining life expectancy. Now the prorated rate is $400/month. Combined: $2,600. Under the cap. Zero offset. Same money, completely different SSDI outcome.

POMS DI 52150.060: How SSA Prorates a Lump Sum

This is the section that controls everything. SSA doesn't pretend the lump sum doesn't exist. It treats the settlement as a substitute for periodic WC payments and prorates it month by month.

Per POMS DI 52150.060, SSA picks the proration rate using this priority list:

1. Rate specified in the lump sum award. If the settlement explicitly states a weekly rate and term (this is the magic language), SSA uses what the document says.
2. Latest WC weekly rate. If no rate is specified, SSA uses the most recent periodic WC payment you were getting before the settlement.
3. State WC maximum on date of injury. If you never got periodic payments (occurs in some lump-sum-only stipulated settlements), SSA defaults to the state cap in effect when you got hurt.

Most attorneys think SSA is going to figure out the proration on its own and they don't fight for the language. Wrong call. The settlement controls. SSR 85-6c and POMS both make clear that if the proration rate is in the four corners of the agreement, SSA uses it.

The Hartman Formula and Life Expectancy Proration

California WC attorneys developed the Hartman formula and it's spread to most state WC bars. Hartman prorates the lump sum over the claimant's remaining life expectancy from standard actuarial tables. The math is straightforward.

Take Maria, age 50, with a $96,000 net WC settlement (after attorney fees). Her remaining life expectancy from Social Security's 2026 actuarial tables is approximately 32 years (384 months). Hartman language puts the proration rate at $96,000 / 384 = $250/month, or $57.69/week. Over 384 months. That's the rate SSA uses.

Compare that to the default. If Maria's WC weekly rate before settlement was $400 ($1,733/month), SSA without Hartman language would prorate at $1,733/month, eating into the 80 percent cap. Over 55 weeks, the lump sum runs out. The math has the same total dollars but a drastically different monthly profile.

For settlements covering both indemnity and future medical, the medical portion can come off the top before proration. POMS DI 52150.045 covers excludable expenses. Spell out medical exclusions in the settlement, with dollar amounts and category labels, and SSA accepts them.

What "Magic Language" Actually Looks Like

This is the part the SSDI bar will say is the biggest single lever in a WC settlement. The settlement should include something close to this:

Three things that clause is doing:

1. Specifying a low weekly rate over a long term. This pulls down the monthly equivalent SSA uses for offset.
2. Separating indemnity from medical and other excludable categories. Excludable amounts come off the gross before proration.
3. Acknowledging SSDI exists and the parties knew about it. This helps establish good faith if SSA later challenges the proration.

Some judges or commissioners push back on Hartman language because it makes the settlement look smaller from the WC carrier's perspective. They want the agreement to reflect reality. Push through. The proration is a federal SSA rule, not a state WC issue. As long as the dollar value of the settlement matches what the carrier is actually paying, the WC tribunal generally accepts it.

The 14 Reverse Offset States

This is the rule that wipes out the entire WC-offset problem for a big chunk of the country. If you live in a state with a recognized reverse offset plan, the state's WC carrier reduces your WC benefits instead of SSA reducing your SSDI. Your SSDI check stays whole.

SSA's reverse offset recognition is locked to plans in effect on or before February 18, 1981. Any state that enacted reverse offset after that date doesn't get the carve-out. Here's the current list per SSA OIG audit reports and POMS DI 52105.001:

State	Type	Notes
California	WC reverse offset	Most common. WC carrier reduces benefits, SSDI stays whole.
Colorado	WC reverse offset	All WC payments under reverse offset. SSDI never reduced.
Florida	WC reverse offset	Reverse offset applies, but lump-sum settlements need proration analysis.
Louisiana	WC reverse offset	State carrier reduces WC up to combined cap.
Minnesota	Partial WC reverse offset	Permanent total payments are reverse offset; other categories may not be.
Montana	WC reverse offset	WC carrier offsets 50 percent of initial SSDI.
New Jersey	WC + PDB reverse offset	Both WC and public disability benefits are reverse offset.
New York	WC + PDB reverse offset	Same as NJ. Strong protection for SSDI recipients.
North Dakota	WC reverse offset	State WC fund handles offset.
Ohio	WC reverse offset	State carrier reduces WC.
Oregon	WC reverse offset	State carrier reduces WC.
Washington	WC reverse offset	L&I (state monopoly) handles offset on its side.
Wisconsin	WC reverse offset	State carrier reduces WC.
Puerto Rico	WC reverse offset	Recognized by SSA per POMS.
Nevada	WC reverse offset (limited)	Enacted after 2/18/1981. SSA does not recognize the post-1981 expansion as reverse offset.

For PDB (public disability benefits, like state retirement disability programs for non-covered employees), reverse offset states are Hawaii, Illinois, New Jersey, and New York.

Even in a reverse offset state, lump-sum settlements still need proration analysis if the WC carrier has been offsetting periodic payments and the lump sum changes the math. But the day-to-day SSDI offset doesn't apply.

Excludable Expenses: The List That Cuts the Net Settlement

POMS DI 52150.045 spells out what can come off the top of a WC lump sum before SSA prorates. Each one is a direct dollar-for-dollar reduction in the amount that triggers offset.

• Attorney fees. Almost always 20 percent of the WC recovery in most states, sometimes 15 percent. Itemize them in the settlement.
• Past medical expenses. Bills the claimant paid for treatment related to the injury before settlement. Requires documentation.
• Future medical set-asides (MSAs). Medicare Set-Aside accounts in WC settlements are excludable from SSDI offset proration. They're already protected from Medicare, and SSA treats them separately.
• Rehab and vocational costs. Any portion of the settlement allocated to rehabilitation, retraining, or vocational services.
• Dependents' attorney fees. If a spouse or child had separate WC counsel, those fees are excludable.
• Burial or funeral expenses. In death cases, these come off the top.

The settlement needs to list each one with a dollar amount. SSA won't infer them. A boilerplate "minus expenses" line in the settlement doesn't work. Itemize.

Worked Example: New Jersey vs Texas (Same Injury, Different Outcome)

Two workers, both 45, both earning $5,000/month, both hurt at work in similar accidents, both approved for SSDI at $2,400/month. Both settle WC for $150,000 with $30,000 in attorney fees. Their net is $120,000 each. Their 80 percent ACE cap is $4,000.

New Jersey Worker

NJ is a reverse offset state for both WC and PDB. The NJ carrier reduces WC benefits, not SSDI. The worker's $2,400 SSDI is untouched. The net effect of the lump sum on SSDI is zero. SSA never sees an offset calculation.

Texas Worker

Texas is not a reverse offset state. SSA applies offset. The settlement language was vague: "$150,000 settles all WC claims" with no proration rate, no Hartman language, no medical allocation. SSA defaults to the prior WC weekly rate of $400/week ($1,733/month). Combined with $2,400 SSDI: $4,133/month, over the $4,000 cap by $133. SSA reduces SSDI to $2,267/month. The offset continues until the lump sum runs out at week 375, about 7.2 years.

Had the Texas settlement included Hartman language prorating $120,000 over 32-year life expectancy at $312/month, the combined total ($2,712) would be under the cap, and SSDI stays whole. Same money. Different drafting.

This is the lesson. Your state matters. Your settlement language matters more.

The COLA Drift: Why Offsets Shrink Over Time

Here's the under-discussed bright spot. Once the offset locks in, it doesn't grow with inflation. The WC proration rate stays fixed at whatever the settlement specified. But SSDI gets a COLA every January.

The 2026 COLA was 2.8 percent. The 2025 COLA was 2.5 percent. Year over year, the SSDI side of the equation grows while the WC proration stays put. The 80 percent cap also rises slightly when SSA does triennial ACE redeterminations (POMS DI 52150.080), which can push the cap up if the high-5 indexed earnings shift.

In long lump-sum prorations, the offset shrinks each year and often disappears entirely before the proration period runs out. A worker with a $300/month offset in 2026 might see it drop to $230 in 2028, $160 in 2030, and zero by 2033. Run the projection before signing.

Reporting the Settlement to SSA

You have to tell SSA. There's no SSA-WC data match that catches every settlement, but most major state WC commissions now upload settlement records monthly. The match is automated and eventually finds you.

The right way:

1. Use Form SSA-546 (Workers Compensation Information Report) if SSA sent one. They send it in batches.
2. Mail or hand-deliver a copy of the settlement and any stipulation to your local SSA field office within 10 days of approval.
3. Include a cover letter with your name, SSN, the settlement date, the gross and net amounts, and the proration rate.
4. Keep proof of receipt. Get a date stamp at the field office or send certified mail.

If SSA doesn't catch the settlement for two years and then back-calculates the offset, you're looking at a possible overpayment notice for 24 months of "excess" SSDI. The hardship waiver path under SSA-632-BK can help, but it's not automatic. Report on time.

State-Specific Notes

• California Hartman formula started here. WC reverse offset and aggressive life-expectancy proration make CA settlements highly protective of SSDI.
• Texas not a reverse offset state. Settlement language is the only lever. Many WC attorneys in TX don't draft Hartman proration without prompting.
• Florida reverse offset for WC but lump sums need proration math in some cases. FL Disability Access has good local guidance.
• New York dual reverse offset (WC and PDB) make NY one of the safest states for an SSDI claimant settling WC.
• Pennsylvania not a reverse offset state. Same as Texas. The PA WC bar has gotten better at Hartman proration in the last 3 to 5 years.
• Ohio reverse offset state. Bureau of Workers Compensation (BWC) is the state monopoly carrier and handles the offset internally.
• Washington L&I monopoly state and reverse offset. Heavily protective of SSDI recipients.

What About SSI?

SSI is separate. SSI is needs-based and treats WC benefits (including lump sums) as unearned income. The $20 general income exclusion doesn't go far. A WC lump sum can wipe out SSI eligibility entirely until the money is spent down to under the $2,000 resource limit ($3,000 for a couple).

For concurrent SSDI/SSI cases, the WC offset hits SSDI first under the 80 percent cap. Then the post-offset SSDI counts as unearned income for SSI. The lump sum hits SSI as unearned income while it's being prorated for SSDI. Two different calculations off the same dollars.

The fix in concurrent cases is often a special needs trust or an ABLE account to receive the lump sum without it counting as a resource for SSI. We covered that in the SNT vs ABLE article.

Common Mistakes That Cost Real Money

Mistake 1: No proration language. The settlement just says "$96,000 settles all WC claims." SSA defaults to your prior weekly rate, which is usually the worst case.

Mistake 2: No itemization of excludable expenses. Attorney fees and medical exclusions get rolled into one number. SSA can't accept what isn't separated out.

Mistake 3: Settling without reading your state's reverse offset status first. If you're in a reverse offset state, the WC carrier should be reducing WC. If they're not, ask why before signing.

Mistake 4: Not reporting on time. The longer SSA waits to apply offset, the bigger the overpayment notice when it lands. Report within 10 days.

Mistake 5: Treating SSDI counsel as optional. Most WC attorneys aren't deep on POMS DI 52150 series. If you're on SSDI and settling WC, get an SSDI attorney to review the proration clause before signing. It's the highest-impact hour of legal time you'll spend.

FAQs

Does a workers comp settlement always reduce SSDI?

No. SSDI gets offset only when SSDI plus prorated WC (plus other public disability benefits) exceeds 80 percent of your average current earnings. If your earnings before injury were high, the cap is high enough that even sizable settlements don't trigger an offset. And in 14 reverse offset states, SSA cannot offset your SSDI at all under WC rules.

What is the 80 percent ACE cap?

Under 42 USC 424a, SSA caps your combined SSDI plus workers compensation at 80 percent of your average current earnings (ACE) before disability. ACE is the highest of three calculations: your AIME, your five highest indexed years, or your year of disability. If your combined benefits exceed that 80 percent cap, SSDI gets reduced.

How does SSA prorate a lump sum settlement?

POMS DI 52150.060 lets SSA prorate using whatever weekly rate the settlement specifies. Without explicit language, SSA uses the WC weekly rate you were already receiving, then the latest WC rate, then the state max for the date of injury. Settlement language can stretch the proration over decades by specifying a low weekly amount, which lowers the monthly equivalent and the offset.

What's a reverse offset state?

A state where the WC carrier reduces workers comp benefits instead of SSA reducing SSDI. SSA recognizes 14 reverse offset states for WC (California, Colorado, Florida, Louisiana, Minnesota, Montana, New Jersey, New York, North Dakota, Ohio, Oregon, Washington, Wisconsin, plus Nevada with limitations) and 4 reverse offset states for PDB (Hawaii, Illinois, New Jersey, New York). Reverse offset only applies to plans in effect on or before February 18, 1981.

Can I exclude attorney fees from the SSDI offset?

Yes. POMS DI 52150.045 allows excludable expenses to come off the gross settlement before SSA prorates. That includes attorney fees (typically 20 percent of the WC recovery), past medical bills, rehab costs, and dependents' attorney fees. List each one in the settlement to lock in the deduction.

How long should I prorate a workers comp settlement?

The longer the better, within reason. The Hartman formula (used widely in California) prorates over the claimant's remaining life expectancy from actuarial tables. Other states allow proration to age 65 or for a specific number of weeks. A $96,000 settlement prorated over 30 years equals about $61 per week. Prorated over 5 years it's $369 per week. The first scenario rarely triggers an offset, the second often does.

What happens if I don't tell SSA about a workers comp settlement?

SSA finds out eventually. State workers comp records get matched against SSA's master beneficiary records. When SSA catches up, you get an overpayment notice for the offset that should have applied, sometimes covering years of unreported benefits. You're on the hook to pay it back. Report the settlement within 10 days using Form SSA-546 or in writing to your field office.