Additionality asks what the funding will make possible that would not otherwise happen, or would not happen at the same scale, speed, quality or impact. The term is especially technical in development finance, but the underlying question also appears in many grant applications.
The OECD defines development additionality in development finance as development impacts that arise because of an intervention and would otherwise not have occurred. The exact definition varies by funding mechanism, so applicants should use the donor’s own terminology where it is provided.
What might additionality look like in a grant?
- Reaching a population that current funding cannot cover.
- Testing an innovation that unrestricted resources cannot finance.
- Expanding a proven program into a new geography.
- Building capacity or systems required for long-term impact.
- Accelerating implementation that would otherwise take several years.
Do not claim that nothing would happen without the grant
If your organization would continue some work anyway, say so. A stronger explanation identifies the specific difference donor funding would make rather than exaggerating dependence.
Additionality vs sustainability
Additionality asks what the donor makes possible. Sustainability asks what continues after funding ends. A strong proposal can explain both without contradiction.
Additionality vs leverage
Leverage often refers to additional resources mobilized because of the funding. Additionality is broader and can include changes in scale, quality, timing, capability or development impact.
Use the Program Fundability Checker to test whether the proposed funding genuinely changes the program’s potential rather than simply filling a budget gap.
Frequently Asked Questions
Does every donor use the term additionality?
No. The question may appear as “Why is this funding needed?” or “What would happen without this grant?”
Is additionality only financial?
No. In development finance, the concept can include financial, value and development additionality.
Can additionality include technical assistance?
Yes where the funding brings knowledge or capability that would otherwise be absent.
Should we quantify additionality?
Where possible, use specific differences in reach, timing, cost, quality or outcome.
What is the biggest mistake?
Claiming the project cannot exist without the donor when that is not true.
Conclusion
Additionality is about the difference funding makes. Strong proposals explain that difference honestly and specifically, using the donor’s own definition where one exists.
Sources and further reading
Put this guide into practice
Free resource: The Nonprofit Funding Playbook. Use this free guide to apply the article’s advice to your next funding decision or application.
Optional paid resource: Nonprofit Grant Proposal Templates. Proposal, concept note, budget, logframe, M&E and donor-document starting points. Review the product details and current price before purchasing.
