Federal contractor calculators
Interactive math for the cost-accounting questions that come up on every cost-reimbursable, T&M, or FAR-Part-31-priced contract. Each calculator reduces to a documented FAR, DCAA, or USACE methodology. Inputs only, no signup, full breakdowns shown.
- FAR 31.203 layered method
Wrap Rate Calculator
Compute the loaded billing rate from direct labor, fringe, overhead, G&A, and fee using the layered method. Full breakdown shown.
- FAR 31.203 / CAS 418
Indirect Rate Calculator
Compute fringe, overhead, and G&A rates from pool and base values. Side-by-side multi-pool view for FAR Part 31-aligned cost allocation.
- DCAA CAM 5-907 Total Time Accounting
Uncompensated Overtime Calculator
Compute the indirect-rate dilution and dollar exposure when a salaried-exempt employee works hours above the standard week without recording them against a cost objective.
- FAR 52.216-7(d) Final Indirect Cost Rate Proposal
Provisional vs. Actual Rate Variance Calculator
Compute the year-end true-up adjustment between provisional billing rates and actual incurred-cost rates. Sizes the refund or upward adjustment owed.
- FAR 31.201-2 four-part test
FAR 31 Cost Allowability Test
Decision-tree wizard that walks the FAR 31.201-2 four-part test (reasonable, allocable, CAS-compliant, terms-compliant) plus FAR 31.205 enumerated principles.
- FAR 52.222-41 / 41 U.S.C. ch. 67
SCA Wage and Fringe Calculator
Compute total Service Contract Act compensation. Splits cash wage and fringe per the Wage Determination, applies bona-fide benefit offset, surfaces cash makeup if benefits fall short.
- USACE EP 1110-1-8
Equipment Cost Allocation (EP 1110-1-8)
Compute hourly equipment ownership and operating rates for federal construction work using the USACE Construction Equipment Ownership and Operating Expense Schedule methodology.
Why these calculators exist
Federal cost accounting is rule-driven. The math behind a wrap rate, an indirect-rate true-up, an EP 1110-1-8 equipment recovery rate, or a Service Contract Act fringe split is documented in regulations most contractors do not have time to read. These calculators surface the answer with the regulatory citation attached, so the number can be defended in writing.
They are sizing tools, not audit substitutes. The FAR 31 allowability test calculator structures a question; the contracting officer makes the determination. The EP 1110-1-8 equipment calculator approximates the schedule; an audit-grade submission uses the current Treasury cost-of-money rate per FAR 31.205-52. The SCA calculator splits cash and fringe; the controlling Wage Determination is at sam.gov.
See Indirect Rate Engine for the production version of pool definition and rate tracking, or the FieldLedger methodology for the underlying FAR Part 31 framework.