The disability backlog didn't shrink. The approval rate did.

In November 2025, Social Security Commissioner Frank Bisignano wrote to Congress to claim a win: the disability claims backlog, which had hit an all-time high of 1.26 million people in June 2024, had been cut by more than 25% to 865,000 — a level not seen since 2022.▸ The letter credited "tremendous progress." What it didn't mention is how much of that progress came from turning more people away.

Every disability claim — Social Security Disability Insurance or Supplemental Security Income — is decided at the first stage not by SSA itself but by a State Disability Determination Service, a state agency that SSA pays for entirely.▸ That line item, $2.82 billion in the FY2026 budget request, is the second-largest piece of SSA's $14.79 billion administrative budget — bigger than the agency's entire information-technology line, and rising faster than almost anything except IT modernization.

That $2.82 billion buys the state employees who decide, case by case, whether a claimant meets the government's definition of disabled.▸ In FY2026 that workforce is budgeted at 13,094 workyears — down from 13,643 in FY2024 — per the same budget justification. Fewer people, doing the deciding, for more money. The question the Commissioner's letter doesn't answer is what changed about how they decide.

State DDS agencies process disability claims off the same monthly workload data SSA itself publishes.▸ The Urban Institute pulled that data apart in September 2025 and found two things moving at once: SSA processed 8% more initial claims in FY2025 than FY2024 — 159,000 more decisions — but the share of claims approved fell from 38.7% in FY2024 to an average of 36.0% in FY2025. The number of claims actually approved stayed essentially flat, near 812,000, in both years. Every additional decision the agency made was a denial.

Run the counterfactual and it gets sharper: had the approval rate held at the FY2024 level, Urban Institute calculates roughly 61,000 more people would have been approved in FY2025.▸ Instead they were denied, or are still waiting. Over the same stretch, applications themselves fell 7% — 163,000 fewer filed in the first ten months of FY2025 than the same period a year earlier, even as the average wait for a first decision stayed above seven months, having peaked at 7.7 months in August 2024, up from 3.7 months as recently as 2017. Longer waits are independently associated with fewer applications in the disability-economics literature Urban Institute cites — which raises the uncomfortable possibility that some of the "missing" applicants aren't people who no longer need the benefit, but people the backlog itself discouraged from ever filing.

Put a shrinking applicant pool and a falling approval rate into the same pipeline and the backlog has nowhere to go but down — which is exactly what happened.

None of this means the backlog reduction is fake — 865,000 people is genuinely fewer than 1.26 million people, and some of the drop is real: SSA spent 2023 and 2024 rebuilding staff productivity after pandemic-era turnover, and Disability Determination Services now close more claims per workyear than they did two years ago.▸ But a backlog number is a ratio of inflow, outflow, and who gets a yes — and two of those three levers moved against claimants at the same time the headline number moved in the agency's favor. SSA's own year-end letter mentions the 25% backlog drop. It does not mention the 3-point drop in the approval rate that helped produce it.

Fiscal years follow the federal calendar (Oct. 1–Sept. 30). Approval-rate and application figures for FY2025 use SSA state-level data through July 2025, with FY2024 levels substituted for the final two months, per Urban Institute's stated methodology; the true FY2025 rate may differ slightly once complete-year data is published.