A square base of 25 stacks contains 25,000 $100 bills worth $2.5 million.

Each of the 25 columns holds 40,000 notes and reaches about 14.3 feet, giving the full platform a value of $100 million.

The General Government block totals about $41B. Its rectangle holds about 405 platforms worth $100 million each at this scale.

FY2025 net interest payments reached $970B, or about 14% of all outlays, to service federal debt from prior years.

International Affairs, General Science and Space, Agriculture, Administration of Justice, and General Government totaled $258B in FY2025, or about 4% of outlays.

Positive Transportation, Natural Resources and Environment, Community and Regional Development, and Energy outlays totaled $338B. Commerce and Housing Credit was −$28B and is reconciled later as a negative outlay.

National Defense accounted for $916B in FY2025, or about 13% of federal outlays. Congress sets this spending each year through appropriations.

Other Human Resources programs totaled $1.2T in FY2025, or about 16% of outlays. The highlighted blocks cover income support, veterans services, education, training, employment, and social services.

FY2025 outlays under the Health function reached $979B, or about 14% of the budget. Most of this category funds Medicaid and the Children's Health Insurance Program, with the remaining amount assigned to other public health programs.

Medicare outlays reached $997B in FY2025, or about 14% of the federal total. The program provides health insurance to Americans age 65 and older and to eligible people with disabilities.

Social Security, the largest function in the treemap, accounted for $1.6T in FY2025, or about 23% of all federal outlays.