Answer · Updated October 1, 2026

NDAA vs appropriations — what's the difference?

Answer

As of October 1, 2026, the NDAA authorizes defense policy and spending levels; a separate appropriations bill or continuing resolution provides the money. H.R. 8800 ($1.15T) passed the House, but government funding expires December 11, 2026 — that deadline is appropriations, not the NDAA.

Two different bills

The NDAA is the annual policy and authorization act (CRS IF10515). It can set authorized funding levels and change permanent law. It does not put money in Treasury accounts.

Defense appropriations (often the Department of Defense Appropriations Act, or a continuing resolution) are the bills that actually fund operations. Congress can pass one without the other.

This year's calendar

H.R. 8800 is the House-passed FY2027 NDAA. S. 4784 is the Senate vehicle. Government funding expires December 11, 2026 — that date is in the live “what's next” note and is an appropriations deadline, not an NDAA enactment deadline.

The last several enacted NDAAs (including FY2026, P.L. 119-60) were signed in December, after the fiscal year had already begun.

Sources

CRS — Defense Primer: The NDAA Process (IF10515) (updated periodically)
Congress.gov — H.R. 8800 — FY2027 NDAA (House) (Jul 22, 2026)
Congress.gov — S. 4784 — FY2027 NDAA (Senate)
The Hill — Senate adjourns until November (Oct 2026)
UPI — Senate adjourns until November (Oct 1, 2026)
The Hill — Lame-duck agenda balloons (Sep 18, 2026)
U.S. Senate — Tentative 2026 schedule (2026)

Sections to read

See every section in the annotated FY2027 NDAA, the House vs Senate differences, or the NDAA amendment tracker.