Secrecy cost $18.39 billion the last year the government could count it. The court that unmakes secrets decided 436 pages last year.

The finding, in one paragraph: the machinery that makes American secrets and the machinery that unmakes them are not the same size, and the gap is now beyond the government's ability to measure.▸ On the making side: 1,661 officials hold delegated authority to originate Top Secret and Secret classifications, feeding a system that generated 49 million derivative classification decisions the last year anyone counted, at a cost that was $18.39 billion and climbing 9 percent annually when the books were last legible. On the unmaking side: 1,384 full-time-equivalent staff across the entire government, a mandatory-review process whose highest appellate panel adjudicated 436 pages in fiscal 2024, and a queue of 1,200 appeals that, at that pace, clears in roughly 85 years. In between sits the watchdog, reporting — in its own annual report to the President — that it can no longer tell whether the system's cost data is real.

Two documents, both read directly, fourteen reports apart.▸ The current one is the ISOO FY2024 Annual Report to the President — the source for the OCA delegations, the declassification workforce, the ISCAP statistics, and the cost-data unreliability finding. The baseline is the ISOO FY2017 Annual Report — the last edition to publish a full system-wide cost estimate ($18.39 billion) and full classification-decision counts. Both are issued under Executive Order 13526, which obliges agencies to report this data — the reporting mandate is the one part of the system whose text hasn't changed.

The ISCAP is the end of the line: when an agency refuses a mandatory declassification review and refuses the appeal, this panel is the public's final recourse.▸ In fiscal 2024 it decided 14 appeals — 33 documents, 436 pages, of which 140 pages were declassified in full and 38 affirmed secret. It received 34 new appeals and holds about 1,200. The docket it did clear is a museum: appeal 2014-030, decided a decade after filing, unsealed Kennedy Library documents on U.S. involvement in Laos in 1961 — records 63 years old, contested for 10, freed at last in their entirety, which is the system working as designed and is also the problem.

This is one line item — what agencies spend investigating the people they clear — and its reported value halved, halved again, then tripled, with the system's own overseer unable to say which figures are real.▸ The FY2017 report could still sum the whole enterprise: $18.39 billion for government, $1.49 billion for cleared industry, with personnel security, physical security, and classified-systems maintenance each running to billions. It also recorded the direction of travel, in language worth preserving: "The percentage of Government spending on declassification continues to decrease every year," and decreased declassification "results in higher long-term costs" — every page kept classified is a page that must be guarded, forever, at classified-facility prices.

The classification system's premise is that information handling must be rigorous, auditable, and consequence-bearing — that is what the $18 billion bought.▸ Hold the system to its own standard. Its cost reporting, mandated by executive order, produces numbers its own overseer disclaims. Its authority rolls persist without use: ISOO's FY2024 assessments found one agency that had not made a classification or declassification decision in over a decade — and another in nearly 15 years — while retaining the authorities and guides. Its corrective pipeline runs at 436 pages a year against a 49-million-decision intake, an asymmetry of roughly five orders of magnitude between making and unmaking. No inspector general would accept this ledger from a benefits program: unknown costs, idle authorities, a review backlog measured in generations. The watchdog knows it — ISOO's reports have said versions of "unsustainable" for years — but ISOO recommends; it cannot compel. The one lever that moves the system, as 2025's headline declassifications of assassination-era files showed, is a presidential order aimed at specific boxes.

The FY2025 ISOO report, due this fall, will show whether the cost data recovers legibility and whether the ISCAP queue moved.▸ The structural questions are older than any administration: whether declassification gets funded as the deferred maintenance it is (the FY2017 report's own framing), whether derivative classification gets counted again at all, and whether a 1,200-case queue at the system's only appellate valve is compatible with an executive order that promises the public a review. Every number in this article comes from the system describing itself; the description is the indictment.

All figures are read directly from the ISOO FY2024 and FY2017 Annual Reports to the President. The 85-year figure is arithmetic (1,200 ÷ 14/year), not an official estimate; the queue also grows. The $18.39 billion is the last full-system estimate ISOO published; comparable current totals do not exist — which is part of the finding.