The forecast for US government expenditure on R&D, as a percentage of GDP, remains largely stable from 2024 to 2028 with minor declines expected. The expenditure is forecasted to hold steady at 0.28% for the initial two years and then slightly drop to 0.27% from 2026 onwards. Compared to 2023, where actual spending stood at 0.29% of GDP, there is a slightly downward trend in terms of the percentage allocation of GDP towards R&D.

Future trends to watch for include:

Potential increases in strategic R&D investments in emerging fields like AI and sustainable technologies.
The impact of political changes on federal R&D budget allocations.
Private sector partnerships driving supplementary R&D financing alongside government spending.