Lead: In the opening days of Operation Epic Fury in early March 2026, independent estimates put U.S. spending at extraordinarily high levels. A bipartisan think tank calculates roughly $891 million per day for the first four days — about $3.7 billion in total — driven by an intense barrage of precision munitions and a rapid regional buildup. The Pentagon has not published an official price tag; a senior Defense Department official told lawmakers he could not provide a figure at the hearing. The scale of the campaign and the deployments that supported it have raised immediate questions about near‑term budget impacts and longer‑term fiscal exposure.
Key Takeaways
- CSIS estimates Operation Epic Fury cost roughly $891 million per day for the first four days, totaling about $3.7 billion for that period.
- The U.S. fired about 2,000 precision munitions during initial strikes; an unknown share were Tomahawk cruise missiles, which cost more than $2 million each.
- Three F‑15 fighters were lost in a friendly‑fire incident in Kuwait; each airframe is valued at about $31 million.
- President Donald Trump ordered a rapid deployment of approximately 50,000 troops, around 200 fighter aircraft and more than a dozen Navy vessels, including two aircraft carriers.
- Democratic lawmakers have suggested the operation could cost up to $1 billion per day; historical peak daily costs for the Iraq War were about $300 million.
- The Defense Department declined to provide a confirmed total; Under Secretary Elbridge Colby told a House panel he could not answer immediately.
- U.S. Central Command describes the campaign as the largest regional concentration of U.S. force in a generation, a characterization that helps explain the high short‑term expense.
Background
The strikes that began in early March 2026 were part of Operation Epic Fury, a U.S. campaign directed at Iranian military targets and capabilities. The administration also moved substantial forces into the region within weeks: carrier strike groups, amphibious ships and thousands of additional personnel. Budget estimates for wars typically spread costs across months or years; the immediate accounting challenge here is the spike in ordnance use and the logistics of a rapid force posture change.
Bipartisan analysts and budget offices distinguish between costs already planned in defense budgets and incremental, out‑of‑budget expenditures. The CSIS study that produced the $891 million per‑day figure noted that a significant share of the early costs — roughly $3.5 billion of the four‑day total — would not be covered by preexisting budget lines. Past conflicts, including the Iraq War, reached markedly lower daily operating costs at their peaks, which provides context but not a direct comparison because the force mixes and munitions types differ.
Main Event
Over the course of the first weekend of strikes, U.S. forces launched an intense bombardment that CSIS summarized as involving roughly 2,000 precision munitions. That high tempo of fire — including cruise missiles and guided rockets — drove much of the immediate cost estimate. Analysts say the exact mix of weapons matters for price: Tomahawk missiles, where used, cost in the multiple millions apiece while guided rockets and some missiles are materially cheaper.
Simultaneously, the U.S. executed an accelerated deployment of conventional forces. Officials report about 50,000 additional troops were sent to the region, accompanied by roughly 200 combat aircraft and over a dozen naval vessels; two carrier strike groups are among those listed. Those moves generated transportation, sustainment and temporary basing expenses beyond ordnance costs.
The campaign also suffered material losses and mishaps that add to the bill. A friendly‑fire event in Kuwait resulted in the destruction of three F‑15 aircraft, each with an acquisition value near $31 million, though full replacement and support costs can be higher. U.S. Central Command characterized the operation as the largest aggregation of American firepower in the region in a generation, a description officials say helps explain both operational intensity and the resulting expenditures.
Analysis & Implications
The immediate fiscal impact is concentrated in munitions expenditure, surge logistics and the high costs of long‑range precision weapons. When a campaign relies heavily on cruise missiles and guided munitions, per‑strike costs rise quickly compared with the use of cheaper artillery or unguided systems. CSIS’s headline figure reflects that equipment mix and the unusually intense opening salvo.
Beyond direct ordnance costs, large troop deployments generate recurring expenses: transportation, temporary housing, hazard pay, maintenance and increased fuel use. Those line items can accumulate fast; even if some costs are absorbed by existing accounts, many will require supplemental funding or reprogramming within the Pentagon budget. The CSIS analysis flagged that most of the initial $3.7 billion was not previously budgeted.
Political dynamics matter for how these costs are handled. Congressional Democrats have pushed higher daily estimates — up to $1 billion per day — signaling pressure for careful oversight and potential funding conditions. Conversely, some critics argue the higher figures conflate short‑term operational surge costs with longer‑term commitments. How lawmakers choose to finance the effort will affect deficit and program trade‑offs at home.
Comparison & Data
| Metric | Reported Value |
|---|---|
| CSIS estimate (first 4 days, daily) | $891 million/day |
| Total first 4 days (CSIS) | ~$3.7 billion |
| Democratic claim (per day) | Up to $1.0 billion/day (unconfirmed) |
| Iraq War peak (historical) | ~$300 million/day |
| Precision munitions used (initial strikes) | ~2,000 |
| Deployed U.S. personnel | ~50,000 |
| Carrier strike groups | 2 (reported) |
The table highlights why the early bill for Epic Fury looks large compared with past conflicts: ordnance intensity and rapid force posture changes. Even if per‑day costs fall as combat shifts to less expensive munitions and Iran’s launch pace declines, budget managers face an early, concentrated outlay that could require new appropriations.
Reactions & Quotes
“Some of these costs are already budgeted, but most ($3.5 billion) are not.”
Center for Strategic and International Studies (think tank)
CSIS emphasized that the bulk of the initial four‑day bill would likely be incremental to planned defense spending, a point that shaped subsequent congressional questioning.
“I’ll get back to you ma’am.”
Elbridge Colby, Under Secretary of Defense for Policy (Pentagon testimony)
Colby’s brief reply to a House member underscored the Pentagon’s reluctance to offer a public total while operations were ongoing and accounting remained incomplete.
“The largest regional concentration of US military firepower in a generation.”
U.S. Central Command (official statement)
U.S. Central Command used this phrasing to characterize the scale of forces and munitions committed, a description that provides context for observers assessing cost drivers.
Unconfirmed
- The exact number of Tomahawk cruise missiles used in the initial strikes remains unverified; publicly reported ordnance totals list ~2,000 precision weapons without a full breakdown.
- The claim that the operation will sustain $1 billion per day is a political projection and has not been substantiated by detailed accounting.
- The full portion of the first‑four‑day costs that will require supplemental congressional funding versus internal reprogramming is not yet confirmed.
Bottom Line
Early independent estimates place the immediate price of Operation Epic Fury in the billions — concentrated in a short timeframe because of ordnance intensity and a swift force surge. The headline CSIS numbers reflect one analytic approach that counts the steep cost of guided weapons and rapid deployments, and they warn that most of the initial $3.7 billion was not pre‑budgeted.
How the Pentagon and Congress treat these expenditures will shape near‑term funding decisions and set precedents for future contingency financing. If operations continue at high intensity, costs could remain elevated; if the campaign shifts to lower‑cost munitions or Iranian retaliation declines, daily spending could fall. Independent oversight and transparent accounting will be crucial for policymakers and the public to understand the full fiscal consequences.