Shared organizational costs such as rent, internet, finance support and leadership time often benefit more than one project. The challenge is not whether these costs exist, but how to allocate them fairly and consistently. A weak method can make grant reports difficult to defend, while a clear allocation basis helps donors and auditors understand why each project was charged a particular share.
Start with the nature of the cost
Ask whether the cost directly supports one project or genuinely benefits several activities. A project-specific field officer is usually a direct cost. Office rent used by several teams is more likely to be shared. Do not classify a cost as indirect simply because it is convenient to spread it across grants.
Choose an allocation basis that reflects benefit
Possible bases include headcount, floor space, direct labor hours, project expenditure or another measurable driver. The best basis is the one that reasonably reflects how the shared resource is used. Avoid changing the basis from month to month simply to move costs to the grant with the most remaining budget.
Document the methodology
Write down the cost pool, allocation base, calculation method, review frequency and approval process. Keep source data such as payroll, floor plans or expenditure reports that support the calculation. This turns the allocation from a judgment call into a reproducible process.
Reconcile allocations regularly
Review whether the allocation still reflects current operations. Staffing, office use and project size may change during the year. A reasonable method can become inaccurate if the assumptions behind it are no longer true.
For a broader framework, see cost allocation plans for NGO grants.
Example
An NGO has three projects using the same office. If one project occupies half the office space and the others each use a quarter, floor space may be a reasonable basis for allocating rent. However, that same basis may not make sense for finance-team salaries, where staff time or transaction volume may better reflect actual support.
Common mistakes
- Using one allocation base for every type of shared cost.
- Changing the method without explanation.
- Allocating costs to grants that do not benefit.
- Ignoring donor-specific restrictions.
- Failing to keep the source calculation.
Build the method into proposal budgets
When possible, explain the allocation approach during proposal development rather than creating it after the award begins. A clear budget narrative helps reviewers understand how shared costs were estimated and reduces surprises during implementation.
What to do next
Use the Grant Budget Sanity Checker to review whether shared-cost assumptions and budget logic are consistent.
For grant drafting support, GrantsWriterAI can help structure budget narratives and related working drafts for human review.
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Test whether the allocation still makes sense
An allocation method should be reviewed against actual operations. If one project grows rapidly, moves to another office or adds many staff, the original share of common costs may no longer be reasonable. Compare the driver behind the allocation with current reality instead of allowing last year’s percentages to continue automatically.
Keep donor restrictions separate from internal policy
An organization may have a sound internal allocation method but still face donor-specific limits on indirect or shared costs. Check whether the donor caps rates, excludes certain categories or requires prior approval. The allocation methodology explains how costs are divided; donor rules determine whether the resulting charge is allowable.
Use allocation reviews as a management signal
Large unexplained shifts in shared-cost percentages can reveal wider operational changes. They may point to staffing changes, project closures, underused office space or a grant carrying more organizational overhead than originally planned. Review these changes with finance and program leadership so they inform both current grant management and future proposal budgeting.
Frequently asked questions
What are indirect costs in a grant?
They are shared organizational costs that support multiple programs but cannot be assigned easily to one activity, such as finance, HR, rent, IT, or leadership support.
How should indirect costs be allocated?
Use a consistent, reasonable method based on an approved cost pool and allocation basis that reflects how shared resources are actually used.
Can every donor accept the same rate?
No. Donor rules vary, so your organization should reconcile its internal allocation method with the specific grant’s allowed indirect-cost treatment.
Who should approve the method?
Finance should develop it, with leadership or governance approval according to organizational policy and donor requirements.
What evidence should be kept?
Retain the methodology, calculations, source data, approvals, and any donor-specific adjustments so allocations can be explained during audit or review.
Conclusion
Indirect-cost allocation should be consistent enough to defend and flexible enough to respect donor rules. Your NGO should document the method, apply it fairly, and avoid shifting shared costs simply to solve a grant-budget problem.
Put this guide into practice
Free resource: The Hidden Formula Funders Love. 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.
