Overhead Rate Calculator
Overhead Isn't a Dirty Word, But It Does Need a Number Attached
Every organization running programs also has to keep the lights on, run payroll for finance and leadership staff, and maintain the systems that make direct program work possible in the first place. Overhead rate expresses how large that supporting layer is relative to the direct work it supports — a single ratio that shows up constantly in board discussions, funder due diligence, and public charity ratings.
The Formula
Overhead costs here refer to the organization's general operating and administrative expenses — distinct from an indirect cost rate negotiated specifically for federal grant cost recovery, though the underlying arithmetic (a supporting-cost figure divided by a direct-cost base) is the same shape of calculation.
Why This Ratio Gets So Much Attention
- Charity rating platforms — third-party evaluators publish overhead ratios as part of assessing nonprofit financial health, which makes this figure visible to donors researching an organization before giving.
- Board financial oversight — tracking overhead rate over several fiscal years shows whether administrative costs are growing in proportion to program activity or outpacing it.
- Funder due diligence — some foundations review an applicant's overhead rate as part of assessing organizational stability and management capacity, alongside program outcomes.
- Growth planning — scaling a program without a proportional increase in administrative capacity eventually strains the organization; overhead rate is one signal for whether that capacity is keeping pace.
How to Use This Calculator
- Enter Overhead Costs ($) — general operating and administrative expenses.
- Enter Direct Costs ($) — the direct program cost base being compared against.
- Select Calculate to see the overhead rate as a percentage, along with total combined costs.
Related Calculations
For the federally negotiated version of this concept, see the Indirect Cost Rate Calculator.