Military Spending in 2030: $3 Trillion and Rising?

# Military Spending in 2030: $3 Trillion and Rising?

Global military expenditure crossed $2.72 trillion in 2024 — the steepest single-year rise since the end of the Cold War. That number, documented by SIPRI in April 2025, represents a 9.4 percent real-terms increase over 2023. If you extend the trajectory another four years, the math is unambiguous: $3 trillion is not a ceiling, it's a waypoint. Analysts at Global X and Forecast International project global defense spending reaching $3.6 trillion by 2030. Some long-range models, if current political conditions hold, show $6.6 trillion by 2035.

The question is no longer whether spending reaches $3 trillion. It's what's driving it there — and whether those drivers are structural or cyclical. The evidence strongly suggests structural.

You can track where spending stands right now on our [current spending tracker](/).

## The Great Rearmament Is Already Underway

The headline number obscures how broad the current surge is. Military spending increased in every world region in 2024 — the first time that's happened in the SIPRI data series. Europe and the Middle East led the acceleration, but no major region contracted.

NATO's European allies and Canada increased defense spending by 20 percent in 2025 to reach $574 billion. 2025 was also the first year in which every NATO ally except Iceland met the alliance's old 2 percent of GDP benchmark. That benchmark is now obsolete: the June 2025 NATO summit committed members to 3.5 percent of GDP on core defense by 2035.

Germany is leading the European charge with a 2026 defense budget of approximately $127 billion. The UK follows at roughly $88 billion, France at $67 billion. Poland, Latvia, and Lithuania are already at or above the new 3.5 percent target. The IISS Military Balance 2026 report confirms that Europe's share of global defense spending has risen to 21 percent — a figure not seen since the early post-Cold War drawdown reversed.

## The US-Iran War and the Munitions Economy

Any forecast for 2030 must account for what is happening in 2026. The United States launched Operation Epic Fury against Iran on February 28, 2026. By March, CSIS estimated costs had reached $16.5 billion within the first twelve days. The fiscal damage is real but partly manageable. The structural damage to US munitions stockpiles is more consequential for long-term spending.

In the opening campaign, the US expended up to 30 percent of its THAAD interceptor inventory and 80 SM-3 missiles. Even at quadrupled production rates, replacing 150 THAAD interceptors takes close to five months. The Iran campaign has drawn down high-demand precision munitions that also cover US commitments in Ukraine and the western Pacific.

This creates a spending imperative that extends well past 2026. Defense economists call this the "reload premium" — and it compounds into the 2030 baseline.

### Will the Iran War Permanently Raise the US Defense Baseline?

Historical precedent suggests yes. Post-2001 Afghanistan and Iraq spending never fully unwound: the US baseline defense budget roughly doubled between 2000 and 2010 and never returned to pre-war levels in real terms. The Iran conflict adds to an already elevated baseline, and the munitions depletion problem alone will drive procurement accounts higher for at least three to four years.

## China: Sustained Growth Against a Slowing Economy

China announced a 7.2 percent nominal defense budget increase for 2025, bringing its official figure to approximately $246.5 billion. This marked the eleventh consecutive year of single-digit but consistent growth. Defense analysts believe actual Chinese military spending is 1.4 to 1.9 times the official number once off-budget items are included.

At 7 percent annual nominal growth, China's official defense budget reaches roughly $350 billion by 2030. Adjusted estimates range from $450 to $600 billion. That still trails the United States significantly in absolute terms, but the gap is narrowing and the composition of Chinese spending is shifting toward high-end capabilities: hypersonic missiles, fifth-generation aircraft, carrier aviation, and space-based ISR systems.

### Will China Overtake the US in Military Spending?

Not by 2030, and probably not by 2035 on any honest accounting. The US defense budget, including supplemental funding and nuclear modernization programs, exceeds $900 billion. Even aggressive Chinese growth scenarios don't close a gap that large within a decade. The more relevant question is whether China achieves capability parity in specific domains — anti-access/area denial, space, cyber, hypersonics — before the spending gap closes. In those domains, the answer is already yes in several categories.

See our [US-China military spending comparison](/research/usa-china-military-spending-comparison) for a breakdown of how the two budgets stack up today.

## New Domains Are Structural, Not Discretionary

The fastest-growing component of defense budgets is not conventional forces. It is emerging-domain spending: artificial intelligence, cyber operations, space, and autonomous systems.

The global AI-in-military market was valued at $9.31 billion in 2024 and is projected to reach $19.29 billion by 2030 — a 13 percent CAGR. The US DoD's FY2026 IT budget allocates $14.3 billion to cyberspace activities alone. The Pentagon's science and technology funding is prioritizing AI and autonomy ($4.9 billion), space ($4.3 billion), and integrated sensing and cyber ($1.9 billion) as its top three categories.

The global drone market is projected to reach $33 billion by 2030 — up from roughly $12 billion in 2023 — driven in large part by defense procurement. These are not add-ons to existing defense budgets. They are increasingly the core of defense budgets, and they don't replace conventional spending — they layer on top of it.

### Does Climate Change Add to the Military Spending Trajectory?

Increasingly, yes — though the accounting is indirect. Climate-driven instability (water stress, crop failure, mass migration) creates the conditions for the low-level conflicts and humanitarian operations that consume defense resources. The US, EU, and NATO have all formalized climate as a security risk in strategic planning documents. More concretely, infrastructure hardening against extreme weather — naval bases at sea level, Arctic force posture, logistics resilience — adds direct costs.

## The $3 Trillion Verdict

The most credible projections place global military spending at $3.4 to $3.6 trillion by 2030. That range requires nothing exceptional — just continuation of the trends already locked in: European rearmament commitments, Chinese defense budget growth at historical rates, US baseline elevation from Iran war replenishment, and new-domain spending accelerating across all major militaries.

The UN Development Programme's 2025 report warned that record military expenditure is diverting resources from sustainable development goals at a moment when climate and poverty pressures are accelerating. That tension — security investment versus development investment — will define fiscal politics in every major democracy through the end of the decade.

Three trillion dollars is not a forecast to be alarmed about in isolation. It is a number that demands a serious accounting of what it buys, who pays for it, and what it crowds out.

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*Sources: SIPRI Trends in World Military Expenditure 2024, IISS Military Balance 2026, France 24, CSIS, Grand View Research, Global X, FDD, UNDP*