What Should You Do Before Charging a Cost to a Federal Grant?

Aug 18 / Rachel Werner
Every charge to a federal award should pass a few simple tests before it reaches the general ledger. A short review now is much easier than explaining a questionable expense during an audit.
Every expense charged to a federal grant should be able to answer one simple question: Why does this belong on the award?

That question often comes up when someone purchases equipment, approves a travel reimbursement, or receives an invoice from a consultant. The answer is not always obvious, and many questioned costs begin with purchases that seemed perfectly reasonable but were never reviewed against the federal requirements before they were charged to the award.

The good news is that you do not need a complicated approval process. You simply need a consistent one. Taking a few minutes to ask the right questions before a transaction reaches the general ledger can prevent corrections, repayment, and uncomfortable conversations during monitoring or an audit.

Those questions are straightforward, and building them into your normal process can help your organization make better charging decisions every time.

What makes a cost allowable?

The Uniform Guidance explains that costs charged to a federal award must be necessary, reasonable, allocable, consistently treated, and adequately documented (2 CFR 200.403). Those words may sound technical, but they translate into practical questions.

Ask yourself:

  • Is this purchase necessary to carry out the award?
  • Is the amount reasonable for what was purchased?
  • Does the award actually benefit from this expense?
  • Would we treat this cost the same way on our other federal awards?
  • Do we have documentation that supports the purchase?


If the answer to any of those questions is no, or even "I'm not sure," that is usually a sign to pause before charging the cost.

What does "necessary" really mean?

A purchase should have a clear connection to accomplishing the work described in the approved award. If removing the purchase would make it difficult or impossible to carry out the funded activities, that is a good indication it may be necessary.

For example, supplies needed to deliver program services are often necessary. Replacing office furniture simply because it is old may be much harder to justify unless the purchase directly supports the award.

When someone reviewing your file asks why the expense was charged to the grant, the answer should be easy to explain without stretching the facts.

How do you know if a cost is reasonable?

Reasonableness asks whether a prudent person would make the same decision under similar circumstances.

Consider questions like these:

  • Was the price consistent with current market conditions?
  • Was the quantity appropriate?
  • Would someone outside your organization view this as a sensible use of federal funds?


A purchase doesn’t become reasonable simply because money remains in the budget.

Likewise, just because an expense is reasonable does not automatically make it allowable. It still has to benefit from the award and meet the other federal requirements.

What does "allocable" mean?

Allocation is simply matching costs to the awards that receive the benefit. If one federal award receives all the benefit, then that award generally receives the full cost.

If multiple programs benefit, the cost should normally be divided using a reasonable method that reflects the benefit each program receives.

The important point is consistency. Your allocation method should make sense, be documented, and be applied the same way each time.

What documentation should support the charge?
Documentation should answer the basic questions about the transaction without requiring someone to guess.

A typical file may include:

  • The invoice or receipt
  • Proof that the purchase was approved according to your procedures
  • Procurement documentation, when required
  • Evidence that the goods or services were received
  • Any allocation calculations, if the expense was shared across multiple awards
  • Notes explaining unusual circumstances or approvals


The stronger the documentation, the easier it becomes to demonstrate that the expense belongs on the award.

Where do organizations make mistakes?

Many questioned costs aren't the result of fraud or intentional misuse. They often happen because routine decisions are made quickly. An expense may be charged simply because funding is available rather than because it benefits the award, or costs may be split between awards without documenting how the allocation was determined. Staff may assume an expense is allowable because it was approved on a previous grant, make a purchase before obtaining required prior approval, or wait until an audit to explain why a cost belonged on the award.

Most of these issues can be avoided by taking a few minutes to document the reasoning before the transaction is processed rather than trying to reconstruct it months later.

Final Thoughts

Charging a cost to a federal award is more than an accounting decision. It is a compliance decision.
When every expense passes through the same simple review, your organization builds a stronger record, reduces unnecessary risk, and makes future monitoring visits much less stressful.

Consistently asking the same questions before charging an expense helps create a stronger audit trail and gives your organization greater confidence that costs are being charged appropriately.

Frequently Asked Questions

Can an allowable cost still require prior approval?

Yes. Some costs may be allowable under the Uniform Guidance but still require prior written approval from the awarding agency or pass through the entity before they are charged to the award. Always review the award terms and conditions.

What if we accidentally charge an expense to the wrong grant?

Correct the error as soon as it is discovered and document why the correction was necessary. Your records should clearly show both the original posting and the reason for the adjustment.

Should supervisors review every grant expense?

Not necessarily. Organizations should establish review procedures that match their size and level of risk. What matters most is that someone with appropriate authority reviews charges according to your written procedures before or shortly after they are recorded.