If you've worked and paid Social Security taxes, you've likely earned work credits — the currency SSDI uses to determine whether you're even eligible to apply. But those credits don't stay active forever. Understanding how long they last, and what affects their expiration, is one of the most overlooked pieces of the SSDI eligibility puzzle.
The Social Security Administration measures your work history in credits. In 2024, you earn one credit for every $1,730 in covered wages or self-employment income, up to a maximum of four credits per year. That threshold adjusts annually with wage inflation.
Credits serve two functions in SSDI:
To qualify for SSDI, you typically need to pass two separate tests:
| Test | What It Measures |
|---|---|
| Duration of Work Test | Have you worked long enough overall? |
| Recent Work Test | Have you worked recently enough before becoming disabled? |
The duration test depends on your age at the time of disability. Younger workers need fewer total credits. Someone disabled at 24 may need as few as 6 credits; someone disabled at 50 or older generally needs more.
The recent work test is where the concept of credits "lasting" comes into play.
Your work credits don't expire in the way a gym membership does — they remain on your earnings record permanently. But your eligibility to receive SSDI based on those credits does have a time limit.
This window is called your Date Last Insured (DLI) — the deadline by which you must become disabled and file for SSDI in order to use the credits you've earned.
Think of it this way: your credits are stored, but your insured status — your active coverage under SSDI — runs out if you stop working.
Your DLI is the last date you remain eligible for SSDI based on your work history. If your disability begins after your DLI, you generally cannot qualify for SSDI — even if you paid into the system for years.
The SSA calculates this based on when you last worked and how many recent credits you have. For most workers, insured status remains active for roughly five years after leaving the workforce — though the exact window depends on your earnings record.
⏳ This is why filing promptly matters. Someone who stopped working in 2019 and became disabled in 2024 may still be within their insured window — or may have just crossed past it. The difference can determine whether SSDI is even an option.
For most adults between ages 31 and 62, the SSA requires 20 credits earned in the 10 years immediately before becoming disabled — roughly five years of work within the last decade.
This creates what some people informally call the "five-year rule": if you haven't worked in more than five years, your recent work test may no longer be satisfied. Your total lifetime credits are still there, but your insured status may have lapsed.
The exact calculation uses calendar quarters, not a simple five-year countdown, which is why the DLI can vary significantly from one person to the next.
The SSA recognizes that younger workers haven't had time to accumulate 20 credits. Special rules apply:
These age-based rules mean the "expiration window" is genuinely different depending on when a person first becomes disabled.
Once approved for SSDI, your ongoing eligibility doesn't depend on continuing to earn credits. Benefits are based on your record at the time of approval. The work credit question is essentially settled once you're awarded benefits.
What matters after approval shifts to other factors: continuing disability reviews (CDRs), the Substantial Gainful Activity (SGA) threshold if you attempt work, and trial work period rules.
The framework above describes how the credit system works for a typical claimant — but your DLI is calculated from your actual earnings record, not from general rules. Two people who both stopped working in the same year can have different DLIs depending on how consistently they worked before that point.
Your Social Security Statement (available at ssa.gov) shows your estimated DLI and earnings history. Reviewing it reveals whether your insured status is still active, how recently it might expire, and whether any gaps in your record affect your standing.
What it can't tell you — and what no general guide can determine — is whether your medical condition, onset date, and work record together satisfy SSA's full eligibility criteria. Those pieces are yours alone.
