Grant Budget Calculator
A Budget Narrative Is Only as Strong as the Math Behind It
Grant reviewers read budget sections looking for one thing above all: does the allocation across categories actually match the work described in the proposal? A program heavy on direct service but light on personnel funding raises questions before a reviewer even reaches the narrative. This calculator splits a total grant amount across the standard categories — personnel, program, admin, and other — so the percentages and dollar figures line up before submission.
The Formula
Each category is calculated independently from the same total, then summed to confirm the allocation doesn't exceed the grant amount — any unallocated remainder is called out explicitly so nothing gets left unaccounted for in the proposal.
Where Category Splits Get Scrutinized
- Funder compliance limits — many grant programs cap administrative costs at a fixed percentage (commonly in the 10–15% range), so knowing the exact dollar figure a percentage represents matters before the proposal is finalized.
- Multi-year proposal planning — recalculating category splits against different total grant sizes helps organizations see how a smaller or larger award would need to be restructured.
- Post-award tracking — the same percentage splits used at application time typically become the baseline a program manager reports actual spending against.
- Internal budget review — finance staff use this exact split to cross-check that a program officer's category percentages actually total 100% (or account for the deliberate remainder) before submission.
Example Allocations on a $100,000 Grant
| Category | Split A (65/20/10/5) | Split B (50/35/10/5) |
|---|---|---|
| Personnel | $65,000.00 | $50,000.00 |
| Program | $20,000.00 | $35,000.00 |
| Admin | $10,000.00 | $10,000.00 |
| Other | $5,000.00 | $5,000.00 |
Both splits are computed directly from the formula above; either would leave $0 unallocated since the percentages total 100%.
How to Use This Calculator
- Enter the Total Grant Amount ($).
- Enter the percentage for Personnel (%), Program (%), Admin (%), and Other (%).
- Select Calculate to see the dollar amount for each category, the total allocated, and any unallocated remainder.
Related Calculations
Build a line-item budget from the ground up with the Program Budget Calculator, or check how indirect costs factor into total spending with the Indirect Cost Rate Calculator.