Calculators
Earned vs Contributed Income Calculator
Analyse a nonprofit's revenue mix: earned and contributed shares, largest single source, self-sufficiency ratio and operating surplus.
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The tool
Enter your numbers below. Results update as you type, and nothing leaves your browser.
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What people use it for
- Strategic planning
- Board financial reviews
- Funder sustainability questions
- Social enterprise planning
About this tool
What the Earned vs Contributed Income Calculator does
Nonprofits earn income from fees, sales and contracts, and receive contributed income from grants and donations. The mix affects resilience: heavy reliance on one source is risky, and the share of expenses covered by earned income (self-sufficiency) is a common sustainability measure.
It also works as a earned vs contributed income calculator or a nonprofit revenue mix calculator.
Formula
- Earned share = earned ÷ total income
- Self-sufficiency = earned income ÷ total expenses
- Surplus = total income − expenses
Worked example
Using the starting values in the calculator above:
| Input | Value |
|---|---|
| Earned income | 3 entries |
| Contributed income | 4 entries |
| Total expenses | $840,000 |
| Result | Value |
|---|---|
| Earned income share | 39.1% |
| Self-sufficiency (earned ÷ expenses) | 40.5% |
| Contributed income share | 60.9% |
| Total income | $870,000 |
| Operating surplus or deficit | $30,000 |
| Largest single source | Foundation grants (29.9%) |
How to read the result
A single source above about a third of income is a concentration risk worth planning around.
Earned income should support the mission; check rules on unrelated business income.
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Questions
Questions about this tool
The things clients actually want to know — costs, timelines, ownership and what happens after launch.
Revenue from fees, sales and contracts in exchange for goods or services.
Grants and donations given without receiving equivalent value in return.
It varies by sector; diversification and reliable sources matter more than a fixed ratio.
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