Aerospace & Defense Manufacturing calculator

Defense Contract Margin Calculator

Check the margin on a defense contract estimate. Enter revenue and costs for the same scope, plus your target margin on revenue.

What this calculator does

  • Calculate a firm fixed price contract’s estimated margin using its revenue and complete program cost.

Formula used

  • Program profit = contract revenue − estimated program cost
  • Contract margin = program profit ÷ contract revenue × 100
  • Cost at target margin = contract revenue × (1 − target margin ÷ 100)
  • Cost headroom = cost at target margin − estimated program cost

Inputs explained

  • Contract Revenue: Firm fixed price revenue for the costed contract scope.
  • Estimated Program Cost: All allocable direct and indirect costs for that scope.
  • Target Margin: Your bid or program margin target on revenue.

How to use the result

  • Best suited to fixed price bid Review, program cost forecast.
  • This does not calculate incentive fees, progress payments or allowable reimbursement. Taxes, financing and contingencies enter only through your complete cost estimate. A positive revenue below $0.000000001 is outside the supported range for a margin percentage.

Current U.S. benchmarks

  • Steel mill PPI stands at 381.162 (BLS, Aug 2026), up 23.4% from a year earlier. New factory orders are up 8.5% year over year (Census).
  • The U.S. has 11,691 transportation equipment establishments employing about 1,682,910 workers (Census County Business Patterns, 2023).

Common questions

  • Is margin the same as markup? No. Margin divides profit by revenue; markup divides profit by cost.
  • Can this evaluate a cost reimbursement contract? Use the applicable fee and reimbursement model for that contract. This calculator estimates profit on a fixed revenue scope.
  • Which overhead belongs in program cost? Include costs allocated to this scope by your consistent accounting method, without counting direct charges twice.
  • Why is the margin blank at zero revenue? Profit can be calculated at zero revenue, but a percentage of zero revenue is undefined.

Last reviewed 2026-10-06.