Air & missile defense · U.S. Army

THAAD

Terminal High Altitude Area Defense interceptor

Hits ballistic missiles higher and farther out than Patriot. CSIS calls it the most critical of the seven because stocks are small and nothing else does its job.

Launched from: Ground launchers (8 batteries) · ~$15.5M each

Estimated leftDepleted

234–278

52–62% of ~452 before the war · as of Jul 27, 2026

At the opening campaign's pace (~6/day) that's 38–45 days of fire with no resupply.

EstimateStars and Stripes, Jul 30, 2026

In blocks of 10

THAAD234–278 of ~452

left within the estimate's range used since Feb 28

Rebuild model

How fast does the stockpile come back? This projects it forward from the deliveries already in the pipeline and the FY2027 rebuild order, using the budget's own schedules. Move the sliders to test faster production or a renewed war.

Published estimates Projection Low–high range Prewar level

Starts from the newest estimate (Jul 27, 2026) and assumes no firing after it unless you add a renewed war. Fighting has continued at lower intensity since July 8, so treat projections from older estimates as optimistic. The default firing rate is the opening campaign's average: ~6 a day over 39 days.

Table view

Date	Low estimate	High estimate

Every estimate

As of	Claim	Source	Type
Aug 4, 2026	≤80% used Per CNN, citing sources familiar with a recent inventory assessment Quote “CNN reported that the United States has used nearly 80% of its Terminal High Altitude Area Defense missile stockpile and about half of its Patriot interceptors since the war began, citing sources familiar with a recent inventory assessment.”	Stars and Stripes Aug 5, 2026	Reported
Jul 31, 2026	Statement Quote “The United States has used about half of the initial inventory for three of these munitions (Patriot, THAAD, and PrSM)”	CSIS Jul 31, 2026	Estimate
Jul 27, 2026	234–278 left Per CSIS (Cancian & Park) Quote “The U.S. also has an estimated 234 to 278 THAAD interceptors remaining, down from 452 before the war.”	Stars and Stripes Jul 30, 2026	Estimate
Jul 27, 2026	~250 left Quote “This has required extensive use of interceptors, with Patriot inventories now under 1,000 and THAAD inventories at about 250.”	CSIS Jul 27, 2026	Estimate
Apr 8, 2026	190–290 used Quote “THAAD $15.5 360 190–290 53” Table 1 row.	CSIS Apr 21, 2026	Estimate
Feb 28, 2026	~452 before the war Per CSIS (Cancian & Park) Quote “The U.S. also has an estimated 234 to 278 THAAD interceptors remaining, down from 452 before the war.” Revised up from the 360 in CSIS's April table.	Stars and Stripes Jul 30, 2026	Estimate
Feb 28, 2026	~360 before the war Quote “THAAD $15.5 360 190–290 53” Table 1 row. CSIS raised this baseline to 452 in its July 27 update.	CSIS Apr 21, 2026	Estimate

Model inputs

Input	Value	Source
Unit cost	$15.5M	CSIS, Apr 21, 2026 Quote “THAAD $15.5 360 190–290 53”
U.S. deliveries per year (recent average) Table 2: five-year average of U.S. procurement.	28	CSIS, Apr 21, 2026 Quote “THAAD 28 49 4 53”
Announced production capacity (all customers) All customers; current surge rate is 96 a year.	400/yr	CSIS, May 27, 2026 Quote “Lockheed Martin plans to expand production capacity to 400 a year”
FY2027 budget request	857	CSIS, May 27, 2026 Quote “The Army has requested 857 THAAD interceptors in FY 2027.”
FY2027 deliveries begin "Mid-2029" modeled as June.	Jun 2029	CSIS, May 27, 2026 Quote “Their deliveries, projected to start in mid-2029”
Months to deliver a full lot Table 2: production time for a full lot.	4	CSIS, Apr 21, 2026 Quote “THAAD 28 49 4 53”
CSIS rebuild outlook	End of 2029	CSIS, May 27, 2026 Quote “will complete the replacement of Iran War usage by the end of calendar year 2029.”