The third stimulus check — officially called the Economic Impact Payment (EIP3) — was authorized under the American Rescue Plan Act of 2021, signed into law on March 11, 2021. For most Americans receiving SSDI, payments arrived quickly, often within days of the law's passage. But the exact timing, amount, and delivery method varied depending on several factors unique to each recipient's situation.
Here's how it worked.
The EIP3 was a one-time federal payment of up to $1,400 per eligible individual, plus $1,400 for each qualifying dependent. It was not a loan, not taxable income, and did not count against SSDI or SSI benefit amounts. It also did not affect Medicare eligibility or any other federal benefit program.
Unlike the first two payments, the third check used 2020 or 2019 tax return data to determine eligibility and delivery. If you hadn't filed a return, the IRS used information already on file — including SSA payment records — to issue payments automatically.
Yes — in most cases. The IRS coordinated directly with the Social Security Administration to identify SSDI beneficiaries who did not file tax returns. For those individuals, the IRS used SSA benefit data to process payments without requiring any action from the recipient.
This covered the majority of SSDI recipients. If you were receiving SSDI in early 2021 and had your banking information on file with the SSA or IRS, payment was typically deposited directly into the same account used for your monthly benefit.
The IRS began processing EIP3 payments in mid-March 2021 — within days of the law being signed. The rollout happened in waves:
| Payment Method | Typical Timing |
|---|---|
| Direct deposit (bank on file with IRS) | March 12–17, 2021 |
| Direct deposit (SSA records used by IRS) | Late March 2021 |
| Paper check by mail | Late March – April 2021 |
| Prepaid EIP debit card | April – May 2021 |
SSDI recipients who filed 2019 or 2020 tax returns generally received payment in the first wave. Those whose information came from SSA records — people who don't file returns — received payment in subsequent batches, sometimes a few weeks later.
Not everyone received EIP3 automatically, and some payments were delayed, sent to closed accounts, or issued in the wrong amount. The IRS created a tool called "Get My Payment" to let individuals track their payment status online.
For those who were eligible but never received EIP3, the Recovery Rebate Credit on the 2021 federal tax return (Form 1040) allowed people to claim the missing amount. Even non-filers with low or no income could file a 2021 return specifically to claim this credit. The deadline to claim it passed in April 2025, so this option is now closed for most people.
Eligibility for EIP3 was based on adjusted gross income (AGI) thresholds — not on whether someone received SSDI specifically. SSDI benefits are generally not included in gross income for people whose total income falls below IRS filing thresholds, which affected how AGI was calculated.
Key variables included:
The $1,400 full payment phased out at $75,000 AGI for single filers and $150,000 for married filing jointly, reaching zero at $80,000 and $160,000 respectively.
Both SSDI and SSI recipients were included in the automatic payment process, but the SSA handles these programs separately — and the IRS treated them slightly differently in its coordination process.
SSI recipients who did not file tax returns and had no dependents were generally included in automatic IRS processing using SSA records. However, SSI recipients with dependents were initially asked to use the IRS Non-Filer tool to add dependent information before a deadline — a requirement that was later extended and resolved for most.
SSDI recipients had a somewhat smoother automatic process overall, largely because SSDI benefit payments are tied to Social Security records that the IRS accesses more directly. 💡
These situations added complexity:
For SSDI recipients, the third stimulus check was largely automatic — but "largely" is not "universally." Whether you received it on time, in the right amount, or at all depended on whether your banking information was current, whether you had filed a recent tax return, whether you had dependents to claim, and whether your AGI pushed your payment into the phase-out range.
The program rules were the same for everyone. What changed outcomes was the specific profile each person brought to those rules — their tax history, their dependents, their income, their delivery method. That gap between how the program worked and how it applied to any one person is where the real answer lives.
