Nonprofit Overhead & Program Ratio Calculator — Rex's Toolbox

Rex says

Money math without the spreadsheet headache. Plug in your numbers and I'll show you exactly where the dollars land.

Try a scenario

Click to load — tweak from there.

Inputs

Program service expense($)

Management & general($)

Fundraising expense($)

Contributions raised($)

Total revenue($)

Unrestricted net assets($)

Result

Program expense ratio

78.5%

Most raters want 65%+; 75%+ is strong

Management & general ratio

12.4%

Fundraising ratio

9.1%

Dollars raised per fundraising dollar

$8.21

Operating surplus / (deficit)

$35,000

Months of operating reserve

3.9

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How to use this

1Enter program service expense ($).
2Enter management & general ($).
3Enter fundraising expense ($).
4Enter contributions raised ($).
5Enter total revenue ($).
6Enter unrestricted net assets ($).
7Read your program expense ratio on the right — it updates as you type.
8Hit Share to keep the scenario or send it to someone.

About this calculator

Charity raters, grantmakers, and the Form 990 all look at how expenses split across program services, management, and fundraising. Calculate the ratios, see where you fall against common benchmarks, and find how much shifting a cost category changes the picture.

FormulaProgram ratio = program expense ÷ total expense; fundraising efficiency = contributions ÷ fundraising expense.

Worked example

Using the values the calculator loads with:

Inputs

Program service expense: 820000 $
Management & general: 130000 $
Fundraising expense: 95000 $
Contributions raised: 780000 $
Total revenue: 1080000 $
Unrestricted net assets: 340000 $

Results

Program expense ratio: 78.5%
Management & general ratio: 12.4%
Fundraising ratio: 9.1%
Dollars raised per fundraising dollar: $8.21
Operating surplus / (deficit): $35,000
Months of operating reserve: 3.9

What each field means

Inputs

Program service expense ($): The program service expense used in the calculation, measured in $. Starts at 820000 $ so you have a working example on load.
Management & general ($): The management & general used in the calculation, measured in $. Starts at 130000 $ so you have a working example on load.
Fundraising expense ($): The fundraising expense used in the calculation, measured in $. Starts at 95000 $ so you have a working example on load.
Contributions raised ($): The contributions raised used in the calculation, measured in $. Starts at 780000 $ so you have a working example on load.
Total revenue ($): The total revenue used in the calculation, measured in $. Starts at 1080000 $ so you have a working example on load.
Unrestricted net assets ($): The unrestricted net assets used in the calculation, measured in $. Starts at 340000 $ so you have a working example on load.

Results

Program expense ratio: Most raters want 65%+; 75%+ is strong
Management & general ratio: Returned as a percentage. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
Fundraising ratio: Returned as a percentage. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
Dollars raised per fundraising dollar: Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
Operating surplus / (deficit): Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
Months of operating reserve: Returned as a decimal number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.

FAQ

Is a low overhead ratio always good?

No — the 'overhead myth' letter from the major charity raters said so explicitly. Starving infrastructure produces weak data systems, high staff turnover, and worse outcomes. Judge results alongside ratios.

How much reserve should we hold?

Three to six months of operating expense is the common guidance. Organizations dependent on reimbursement contracts should hold toward the upper end because payments arrive late.

Accuracy and limitations

Results are estimates before tax, fees, and inflation unless an input explicitly covers them.
Rates are treated as fixed for the whole period — variable-rate products will drift from this projection.
This is educational maths, not financial advice. Check anything contractual with the lender or your accountant.

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Cite this calculator

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APA

RevenueLab. (2026). Nonprofit Overhead Ratio Calculator. Retrieved from https://www.revenuelab.fyi/toolbox/nonprofit-overhead-ratio

HTML

<p>Source: <a href="https://www.revenuelab.fyi/toolbox/nonprofit-overhead-ratio" target="_blank" rel="noopener">Nonprofit Overhead Ratio Calculator — RevenueLab</a> (2026).</p>

Markdown

Source: [Nonprofit Overhead Ratio Calculator — RevenueLab](https://www.revenuelab.fyi/toolbox/nonprofit-overhead-ratio) (2026).