Budget simulator
Adjust the major sources of federal revenue and spending, and watch the projected deficit or surplus change. A simplified way to feel the trade-offs.
Read this as a learning tool, not a forecast. Real budgets involve mandatory vs. discretionary spending, multi-year baselines, debt-interest feedback, and economic effects this model doesn't capture. Categories are shown at their actual FY2025 levels; a percent change simply scales that line.
Baseline vs. your scenario
| x | Baseline (real FY2025) | Your scenario |
|---|---|---|
| Receipts | $5,234,616,386,315 | $5,234,616,386,315 |
| Spending | $7,009,973,667,049 | $7,009,973,667,049 |
The gap between receipts and spending is the deficit; move the sliders to see both bars shift against the real baseline.
Revenue — receipts by source
Spending — by function
Smaller and net-offsetting functions, held fixed.
Baseline: U.S. Treasury Monthly Treasury Statement — net receipts by source and outlays by function, FY2025. These reconcile to the headline deficit (unlike gross agency/award figures).