How Much Does NATO Spend on Defense? ($1.5tn, 2025)
NATO's 32 members spent a combined $1,520.9bn on defense in 2025, equal to 55.5% of world military spending.
Key takeaways
- NATO's 32 members spent a combined $1,520.9bn on defense in 2025.
- That total equals 55.5% of world military spending.
- The figure covers all 32 current NATO members for 2025 — no members are missing from the sum.
- The $1,520.9bn total is our calculation from SIPRI country-level data, not a figure SIPRI itself publishes.
- Figures are in SIPRI constant 2024 US dollars, which adjusts for inflation across the alliance.
Verdict
NATO's 32 members spent a combined $1,520.9bn on defense in 2025, equal to 55.5% of world military spending. This is our calculation from SIPRI country-level data, not SIPRI's own published total, and it sums all 32 current NATO members for 2025.
At a glance
| NATO total (2025) | $1,520.9bnSum of 32 members |
|---|---|
| Share of world spending | 55.5%Of world military spending, 2025 |
| Members included | 32 of 32Full current membership |
| Currency basis | SIPRI constant 2024 USDInflation-adjusted |
| Year | 2025Reported, not estimated |
NATO's 32 members spent a combined $1,520.9bn on defense in 2025, equal to 55.5% of world military spending. That figure is our own calculation, built by summing SIPRI's country-level expenditure data for every current NATO member — not a total SIPRI itself publishes.
01 How much does NATO spend on defense in 2025?
In 2025, the 32 countries that make up the North Atlantic Treaty Organization spent a combined $1,520.9bn on defense, measured in SIPRI constant 2024 US dollars. That figure is not one NATO or SIPRI announces as a single line item — it is the sum of what each member state reported spending individually for the year.
02 How the $1,520.9bn total is calculated
This total is built by taking each NATO member's 2025 military expenditure, as recorded in SIPRI's dataset, and adding the 32 figures together. No estimation or extrapolation is applied to fill gaps, because none is needed for this total.
| Metric | Value |
|---|---|
| NATO members included | 32 of 32 |
| Combined 2025 spending | $1,520.9bn |
| Share of world military spending | 55.5% |
Sum of all 32 current NATO members for 2025.
03 NATO's share of world military spending
NATO's $1,520.9bn in defense spending represents 55.5% of world military spending in 2025. No individual member's spending comes close to explaining the scale of the combined total on its own — the share reflects the sum across all 32 members.
04 Which members drive the total
The $1,520.9bn figure is a sum across all 32 members, and by design it does not distinguish which countries contribute the most. Military spending across NATO is highly uneven — a small number of large economies typically account for a disproportionate share of any alliance-wide total, while many smaller members contribute comparatively little in absolute dollar terms. The full member-by-member figures that make up the $1,520.9bn total are available in the linked country data.
- Coverage — all 32 current NATO members are included in the 2025 total, so the figure is not adjusted for any missing countries.
- Currency basis — figures are in SIPRI constant 2024 US dollars, which strips out inflation and exchange-rate effects across members.
- Year status — 2025 is a reported year in this dataset, not a projected or estimated one.
05 Explore the full country-by-country breakdown
The $1,520.9bn total is the sum of 32 individual national defense budgets, and the size of each contribution varies widely by member. For the underlying country-level figures that make up this total — including which members spend the most in absolute dollars and as a share of their own economies — see the full NATO defense spending breakdown.
Frequently Asked Questions
- How much does NATO spend on defense?
- NATO's 32 members spent a combined $1,520.9bn on defense in 2025, based on SIPRI country-level data.
- What share of world military spending does NATO account for?
- NATO accounted for 55.5% of world military spending in 2025.
- Is the $1,520.9bn figure published by SIPRI or NATO?
- No. It is our calculation from SIPRI's country-level data, summed across all 32 current NATO members — SIPRI does not publish this bloc-wide total itself.
- How many NATO members are included in the total?
- All 32 current NATO members are included for 2025, so the figure has no gaps from missing countries.
defensebudget.org
Defense spending data, sourced from SIPRI
defensebudget.org tracks military expenditure for 160 countries using the SIPRI Military Expenditure Database. Pages are generated from that dataset and reviewed before publication.