Here’s a breakdown of NATO member states' defense spending as a percentage of the combined total, based primarily on 2023 data with adjustments for 2024 trends where noted:

- United States: 68.25% ($860 billion of $1.26 trillion in 2023). In 2024, with $1.47 trillion total, the U.S. likely still contributes around 65-68%, given its $3.38% GDP spending (on a GDP of roughly $25 trillion) translates to over $900 billion, dwarfing others.
- Germany: 5.40% ($68.08 billion of $1.26 trillion in 2023). Germany hit 2% of GDP in 2024 (about $4.2 trillion GDP), suggesting $84 billion+, or roughly 5.7% of $1.47 trillion.
- United Kingdom: 5.22% ($65.77 billion of $1.26 trillion in 2023). At 2.3% of GDP ($3 trillion) in 2024, this rises to $69 billion, or about 4.7% of $1.47 trillion.
- France: 4.49% ($56.57 billion of $1.26 trillion in 2023). At 2.1% of GDP ($3 trillion) in 2024, around $63 billion, or 4.3% of $1.47 trillion.
- Italy: 2.51% ($31.63 billion of $1.26 trillion in 2023). Below 2% GDP ($2.2 trillion), likely $35-40 billion in 2024, or 2.4-2.7%.
- Poland: 2.31% ($29.1 billion of $1.26 trillion in 2023). At 4.1% of GDP ($800 billion) in 2024, $32.8 billion, or 2.2% of $1.47 trillion.
- Canada: 2.30% ($28.98 billion of $1.26 trillion in 2023). At 1.4% of GDP ($2.1 trillion) in 2024, $29-30 billion, or 2%.
- Spain: 1.52% ($19.15 billion of $1.26 trillion in 2023). At 1.3% of GDP ($1.6 trillion) in 2024, $20.8 billion, or 1.4%.
- Netherlands: 1.33% ($16.76 billion of $1.26 trillion in 2023). At 1.7% of GDP ($1 trillion) in 2024, $17 billion, or 1.2%.
- Turkey: 1.26% ($15.88 billion of $1.26 trillion in 2023). At 1.3% of GDP ($1.2 trillion) in 2024, $15-16 billion, or 1.1%.
- Other NATO Members (20 countries): Collectively 5.41% ($68.14 billion of $1.26 trillion in 2023). In 2024, with rising contributions (e.g., Estonia at 3.4% GDP, Latvia at 3.2%), this group likely exceeds $100 billion, or 7-8% of $1.47 trillion.

The "other" category includes countries like Estonia (3.4% GDP), Latvia (3.2%), Greece (3.1%), and newer members like Finland and Sweden, whose 2024 spending pushes the European total higher. NATO reports that European allies and Canada collectively reached $430 billion in 2024 (2.02% of their combined GDP), up from $356 billion in 2023, reducing the U.S. share slightly but not dramatically.

This distribution reflects the U.S.'s outsized role, driven by its global military commitments, not just NATO obligations. European spending has surged since Russia’s 2022 Ukraine invasion, with 23 of 32 members hitting 2% GDP in 2024, per NATO estimates. However, their smaller economies mean the U.S. still dominates in absolute terms. These percentages are estimates, as final 2024 data won’t be confirmed until mid-2025, but they align with trends of increasing European burden-sharing amid geopolitical pressure.