Methodology
One number leads: an independent estimate of what the operations cost. A second number holds the line on what we can itemize.
The headline estimate
The bold figure is the independent third-party estimate of direct US military cost. CSIS puts the direct cost at roughly $40 billion. Pentagon figures reach up to $42 billion. Taken together the reported range runs $34–42 billion, as of July 2026. We do not compute this number ourselves. We cite it, link the source, and update the label when the reporting moves.
The itemized floor
The second figure is the sum of specific reported events we can each point to: a strike, a deployment, an appropriation. Every one has a dollar amount, a date, and a link to the report or government document it came from. When a report gives a range, we use the midpoint. When two sources cover the same spending, we count it once. This is a floor, not the full cost, because plenty of real spending never gets itemized in public reporting. You can read every source behind it on the sources page.
Why we do not project a daily rate
The cost was phased, not steady. There was an expensive opening, then a stretch of sustained operations, then a lower standby posture once the ceasefire held. Multiplying a single daily rate by the days elapsed would badly misstate the total, so we do not do it. The independent estimate already accounts for the real shape of the spending, which is why we lead with it.
A note on the bigger numbers
You may see far larger figures elsewhere, from $200 billion up to roughly $1 trillion, such as the work of Harvard’s Linda Bilmes. Those measure broad economic impact: knock-on costs, long-term obligations, and effects across the wider economy. That is a different question from direct military outlays, which is what this tracker reports. We keep the two separate on purpose.