Department of the Interior
DOI · FY2017–FY2026 budget trends
Manages 500 million acres of federal land including national parks, wildlife refuges, and Bureau of Land Management territory. Oversees natural resource extraction, water infrastructure, and tribal affairs with a $6.4B contracts / $7.7B grants split.
💰 Taxpayer Accountability
Land management costs continue rising while the department sits on trillions in untapped energy resources that could generate revenue instead of consuming tax dollars. The federal government owns nearly 30% of all U.S. land — an arrangement that restricts economic development and local control, particularly in western states.
Budget Authority (FY2026)
$74.7B
Total Contracts
$6.4B
Total Grants
$7.7B
Budget Growth (FY17→25)
+90.5%
+$8.8B
Contracts vs Grants
Budget Trend
Year-over-Year Changes
| FY | Budget | YoY | Obligated | YoY | Outlays | YoY |
|---|---|---|---|---|---|---|
| 2017 | $36.3B | — | $25.5B | — | $23.9B | — |
| 2018 | $39.1B | +7.6% | $26.3B | +3.4% | $25.2B | +5.4% |
| 2019 | $40.7B | +4.1% | $26.7B | +1.4% | $25.4B | +0.9% |
| 2020 | $45.0B | +10.6% | $29.6B | +10.8% | $27.7B | +8.8% |
| 2021 | $48.8B | +8.5% | $30.7B | +3.8% | $27.9B | +0.7% |
| 2022 | $84.2B | +72.5% | $37.6B | +22.4% | $33.3B | +19.4% |
| 2023 | $92.2B | +9.5% | $43.4B | +15.3% | $37.4B | +12.6% |
| 2024 | $92.9B | +0.8% | $44.4B | +2.4% | $38.8B | +3.7% |
| 2025 | $94.3B | +1.5% | $42.8B | -3.5% | $41.0B | +5.7% |
| 2026 | $74.7B | -20.8% | $6.8B | -84.1% | $8.1B | -80.2% |
How This Agency's Growth Compares
Department of the Interior grew +90.5% from FY2017 to FY2025 — #5 growing of 18 major agencies.
| # | Agency | Growth % | Growth $ |
|---|---|---|---|
| 1 | Department of Energy | +154.4% | +$49.4B |
| 2 | Department of Homeland Security | +153.1% | +$44.4B |
| 3 | General Services Administration | +107.7% | +$12.9B |
| 4 | Department of Transportation | +97.4% | +$66.5B |
| 5 | → Department of the Interior | +90.5% | +$8.8B |
| 6 | Department of State | +84.0% | +$16.2B |
| 7 | Department of Health and Human Services | +66.7% | +$809.9B |
| 8 | Social Security Administration | +64.9% | +$643.6B |
| 9 | Department of Defense | +52.8% | +$173.1B |
| 10 | Department of Agriculture | +49.9% | +$61.7B |
| 11 | Department of Housing and Urban Development | +43.8% | +$23.7B |
| 12 | Department of Veterans Affairs | +41.7% | +$84.8B |
| 13 | Department of Education | +28.1% | +$21.1B |
| 14 | National Aeronautics and Space Administration | +24.4% | +$4.5B |
| 15 | Railroad Retirement Board | +15.1% | +$1.9B |
| 16 | Department of Labor | +10.1% | +$1.1B |
| 17 | Department of Justice | -2.5% | -$292.0M |
| 18 | Agency for International Development | -26.6% | -$4.4B |
Related Pages
Budget Functions
How federal spending is categorized by purpose and function.
Read more →Top Contractors
Which companies receive the most federal contract dollars.
Read more →Spending Explosion
How federal spending has grown dramatically since 2017.
Read more →Sub-Agencies
Detailed spending by sub-agencies and bureaus.
Read more →Source: USASpending.gov · U.S. Department of the Treasury