Unverifiable: The Claim That Defence Spending Rises by Only 0.08% of GDP Doesn't Add Up
“The government's defence spending plan increases defence spending by only 0.08% of GDP”
The argument in brief
A claim is circulating that a government's defence spending plan increases spending by just 0.08% of GDP — a figure that appears to be misleading or taken out of context. For the UK, official sources including the Spring Statement 2025 and NATO data show the planned increase is around 0.2 percentage points of GDP, more than twice as large. The 0.08% figure cannot be traced to any verified government document.
Why it spread
Exact-looking decimal figures feel authoritative and are hard to quickly challenge — most people won't stop to do the GDP maths themselves. The claim also fits a ready-made narrative that governments are not serious about defence commitments, which makes it easy to share without scrutiny among people already skeptical of official announcements.
A claim has been circulating that a government's defence spending plan only raises defence spending by 0.08% of GDP — implying the commitment is far smaller than advertised. Based on available evidence, this figure appears to be either wrong, cherry-picked, or unverifiable. No major government policy document uses this number to describe an overall spending increase.
For the UK, the clearest reference point is the Spring Statement 2025, which announced plans to raise defence spending to 2.5% of GDP by 2027, up from around 2.3%. That is an increase of roughly 0.2 percentage points — more than double the 0.08% figure being claimed. NATO's own tracking of UK defence expenditure confirms the same ballpark, with increases measured in meaningful tenths of a percentage point, not hundredths.
HM Treasury budget documents and analysis from the Institute for Fiscal Studies both describe the planned increases in terms of multi-billion pound commitments. When converted to a share of GDP, these figures are considerably larger than 0.08%. No credible fiscal source supports the lower number as a description of the overall plan.
To be fair, it is possible the 0.08% figure refers to a single year's incremental increase within a longer spending path, rather than the total planned rise. That would be a technically narrow reading — and a misleading one. Quoting one small step in a multi-year plan as if it represents the whole commitment is a common way statistics get distorted in political debate.
This claim is ultimately unverifiable without knowing exactly which government and which document it refers to. That vagueness is itself a warning sign. When a precise-sounding number floats around without a clear source, it is worth asking: precise about what, exactly? If you see this figure repeated, ask for the specific policy document it comes from before accepting it.
Sources
- UK Government Spring Statement 2025
The UK government announced plans to increase defence spending to 2.5% of GDP by 2027, rising from approximately 2.3% of GDP, representing an increase of roughly 0.2 percentage points of GDP, not 0.08%.
- HM Treasury Budget Documentation
UK defence spending figures published by HM Treasury show planned increases measured in billions of pounds, with GDP percentage changes typically cited in tenths of a percentage point rather than hundredths.
- NATO Defence Expenditure Data
NATO tracks member defence spending as a percentage of GDP annually. UK spending has been around 2.0-2.3% of GDP in recent years, with announced increases being substantially larger than 0.08% of GDP.
- Institute for Fiscal Studies (IFS)
IFS analysis of UK defence spending plans indicates the government's commitment involves multi-billion pound increases, which as a share of GDP represent increases considerably larger than 0.08 percentage points.