Cost Accounting· · 3 min read
How to Classify Direct Costs on a Government Contract
What counts as a direct cost on a government contract: direct labor, materials, subcontracts, travel, and the mistakes that draw an auditor's attention.

Of the five cost pools, the direct pool is the one most contractors feel confident about, right up until an auditor asks why a cost was charged the way it was. This guide covers what makes a cost direct, what the direct pool actually contains, and where contractors get it wrong. It's the direct-cost companion to our four-question classification method and to Direct vs. Indirect Costs, which compares the two sides head to head.
The One Test for a Direct Cost
A direct cost is any cost you can trace to a single contract. If you can draw a straight line from the cost to one contract, it belongs in the direct pool: project labor, materials, and subcontracts. That single-contract traceability is the whole test. If a cost benefits two contracts, or the business generally, it is not direct, it is indirect.
Direct Costs (50000s)
Key accounts in this pool:
- 50100 Direct Labor: hours your employees charge to a specific contract, the single largest direct cost on most service contracts.
- 50200 Direct Subcontractors: subcontractor work billed to one contract.
- 50300 to 50400 Direct Equipment and Materials: equipment and materials used to execute one contract.
- 50500 Direct Travel: travel to perform one contract, broken into nine sub-accounts (50501 to 50509): lodging and hotel, air, rail, and bus, mileage, per diem, business meals, rental car and gas, taxis and tolls, parking, and other.
- 50600 Other Direct Costs (ODC): direct costs that don't fit the categories above.
Why Direct Travel Is Broken Into Sub-Accounts
The granularity in direct travel is intentional. Auditors want to see travel detail rather than a single "travel" bucket, and contract terms often cap or exclude specific categories, so the breakdown lets you bill exactly what the contract allows and prove it later. It also makes reconciliation against expense reports straightforward, and keeps unallowable pieces, such as alcohol inside a meal, easy to strip out.
Travel is also the classic case where the same expense lands in a different pool depending on its purpose. When a trip isn't clearly tied to one contract, see how to classify travel costs.
The Mistakes Auditors Look For
Two errors show up again and again, and both distort your numbers in ways an auditor will notice:
- Charging an indirect cost as direct. Putting general overhead or G&A on a contract overstates that contract's direct cost and can amount to billing the government for something it should not pay. This is one of the fastest ways to draw scrutiny.
- Charging a direct cost as indirect. The reverse understates the contract's true cost and spreads a cost that belonged to one job across all of them, which distorts your indirect rates.
The protection against both is consistency.
If a cost is treated as direct today, it has to be treated the same way under similar circumstances tomorrow. A short written classification policy is what lets you answer an auditor the same way every time.
How WiseCost Keeps Direct Charging Clean
Direct labor is the hardest direct cost to get right, because one person's time can land on several contracts in a single week. WiseCost handles it through timekeeping and labor distribution: employees log hours against each contract, and WiseCost posts that labor to the correct direct accounts at each employee's actual rate, with an immutable audit trail behind every entry. The direct charges that reach QuickBooks Online are the same ones you can defend in a floor check.
Get the free 147-account chart of accounts template. It is CPA-reviewed and built for GovCon books, with the full direct pool and its travel sub-accounts already built out, ready to import into QuickBooks Online.
You can also run our free DCAA Readiness Self-Assessment to check your cost pools against an SF-1408 review, or book a demo to see how WiseCost keeps direct charging audit-ready.