How to Build a Government Cost Proposal (Direct + Indirect Costs)

Every federal contract requires a price. Every response to a solicitation requires a cost proposal. And it is where most small contractors either lowball themselves out of profitability or overbid themselves out of the award. A federal cost proposal is not the same document as a commercial price quote — the government requires specific supporting detail, specific labor category breakdowns, specific handling of direct versus indirect costs, and (for many contracts) audit-ready backing to every number. Get it right and you win contracts at rates that keep you profitable. Get it wrong and you either lose or win and lose money for two years fulfilling the work. This guide walks through the fundamentals of building a compliant, defensible, competitive federal cost proposal.

Cost proposal vs price proposal

Terminology matters. Federal solicitations use these distinctly:

• Price proposal: firm fixed price for a defined scope; you’re not showing your cost buildup, just the total price. Common for commercial-item procurements (FAR Part 12).
• Cost proposal: full cost buildup broken into direct labor, direct materials, direct other, plus indirect rates (overhead, G&A, fringe), plus profit/fee. Common for cost-reimbursable contracts, T&M, and negotiated procurements (FAR Part 15).

A solicitation will tell you which format is required. RFPs typically ask for cost proposals; RFQs typically ask for price. See our RFI vs RFP vs RFQ guide for the distinctions.

The four cost proposal categories

1. Direct labor

Personnel directly performing the contract work. Buildup:

• Labor category (Program Manager, Senior Engineer, Analyst, etc.)
• Estimated hours per category per period
• Loaded labor rate (direct hourly + fringe + overhead)
• Total: hours × loaded rate per category, summed

2. Direct materials, equipment, and other direct costs (ODC)

• Software licenses purchased specifically for the contract
• Hardware/equipment for the specific contract
• Travel (if separately billable)
• Training
• Subcontractor costs

3. Indirect costs

Costs that support the business overall but can’t be tied to a specific contract. These are recovered via indirect rates applied to your direct base:

• Fringe benefits: employer taxes, healthcare, retirement contributions — applied to direct labor
• Overhead: facility costs, tools, utilities, non-direct staff supporting operations — applied to direct labor + fringe
• General & administrative (G&A): corporate management, accounting, HR, legal, business development — applied to total cost input (direct + fringe + overhead + ODC)

4. Profit / fee

• Fixed-price contracts: profit is your negotiated margin, typically 5-15%
• Cost-plus-fixed-fee: fee is a set dollar amount (not percentage)
• Cost-plus-incentive-fee: variable based on performance
• Small business federal averages: 8-12% on services, 5-10% on products

Sample cost buildup — $500K one-year services contract

Direct labor

• Program Manager: 100 hrs × $65 (direct rate) = $6,500
• Senior Analyst: 1,000 hrs × $50 = $50,000
• Analyst: 2,000 hrs × $35 = $70,000
• Subtotal direct labor: $126,500

Fringe (25% of direct labor)

$126,500 × 25% = $31,625

Direct labor + fringe: $158,125

Overhead (60% of direct labor + fringe)

$158,125 × 60% = $94,875

ODC (subcontractor + software)

$40,000

Total cost input (before G&A)

$158,125 + $94,875 + $40,000 = $293,000

G&A (18% of total cost input)

$293,000 × 18% = $52,740

Total cost: $345,740

Fee (10%)

$345,740 × 10% = $34,574

Total proposed price: $380,314

This example is representative — your actual indirect rates depend on your company’s overhead structure. Small consulting firms typically run 15-30% fringe, 40-90% overhead, 8-20% G&A.

How to establish your indirect rates

Two paths:

Provisional rates (early-stage contractors)

• Estimate based on projected costs and revenue
• Submit forward pricing rate proposal to DCAA (or negotiate with contracting officer)
• Adjust actuals at year-end via true-up
• Risk: significant variance between provisional and actual creates billing complications

Historical rates (established contractors)

• Calculate actual indirect costs / actual direct base for prior fiscal year
• Submit as basis for current year proposals
• DCAA may audit and issue final rate determination
• More defensible than projections

See our DCAA compliance basics guide for the audit-readiness framework.

Common cost proposal mistakes

• Not distinguishing direct from indirect. Salaried employee who works on the contract 60% of time = 60% direct labor, 40% indirect (overhead or G&A). Charging 100% direct overstates cost recovery.
• Lowballing indirect rates to win. Wins contract, loses money for the duration. Better to walk from contracts that require unrealistic rates.
• Missing fringe/G&A in the buildup. Common with commercial companies transitioning to government work. Your $50/hour rate includes only wages; the government contract also has to cover the employer taxes, benefits, and corporate overhead.
• No basis for estimate (BOE). Government wants to see how you derived hours and rates. “Because I said so” doesn’t survive DCAA review.
• Copying competitor pricing. Your cost structure isn’t theirs. Their winning bid may be underpriced or heavily subsidized.
• Ignoring geography factors. DC-area labor rates differ dramatically from other regions. Cost of living adjustments matter.
• Skipping profit/fee. Some contractors submit at cost thinking it improves their chances. It signals inexperience and creates future problems.

The basis of estimate (BOE)

Government evaluators want documentation of HOW you derived each cost:

• Direct labor: hours by category, staffing plan showing who does what
• ODC: quotes from vendors, historical similar-contract costs
• Travel: locations, frequency, GSA per diem rates
• Indirect rates: forward pricing rate agreement or historical rate history

A weak BOE is grounds for cost realism disqualification even when your total is competitive.

Cost realism analysis — what the government checks

Government evaluators check for:

• Cost realism: are your rates and hours realistic to actually do the work?
• Cost reasonableness: are they in a reasonable range for the market?
• Cost balance: are direct/indirect ratios normal?
• Adequacy of the workforce: enough people at the right skills?

Bids too low get flagged as unrealistic and rejected. Bids too high get flagged as unreasonable and rejected. Sweet spot is 5-15% under the government’s independent estimate.

Recommended supporting resources

• FAR Part 15.4 — contract pricing (the definitive reference)
• DCAA Contract Audit Manual (CAM) — how auditors review your proposal
• GSA per diem rates — for travel budgeting
• SF 1408 — Adequate Cost Accounting System evaluation checklist

Related GCF topics

Foundation: how to write a government proposal, how to respond to RFQ, how to read government solicitation. Cost/accounting: DCAA compliance basics, how to invoice via WAWF. Contract types: government contract types explained. Proposal quality: proposal compliance matrix, why government proposals are rejected.

Key takeaways

• Federal cost proposals require direct labor, direct materials/ODC, indirect rates (fringe/overhead/G&A), and profit/fee — all with supporting BOE.
• Sample buildup: $500K services contract = $126K direct labor → $158K with fringe → $253K with overhead → $293K total cost input → $346K with G&A → $380K with 10% fee.
• Small consulting firm indirect rate norms: 15-30% fringe, 40-90% overhead, 8-20% G&A. Your rates must be defensible.
• Never lowball indirect rates to win — you’ll spend the contract losing money and can’t legally re-negotiate mid-performance.
• Cost realism analysis flags both too-low (unrealistic) and too-high (unreasonable) proposals; sweet spot is 5-15% under government’s independent estimate.

FAQ

Do I need a DCAA-approved accounting system to submit cost proposals? For firm fixed-price contracts, no — pricing is not audited during performance. For cost-reimbursable, T&M, and cost-plus contracts, yes — you’ll need SF 1408 approval before contract award. Many small contractors start with fixed-price only until they’ve built accounting infrastructure to support cost-reimbursable work.

How do I know if my indirect rates are competitive? Benchmark against industry data (GAUGE Report from Unanet, NCMA publications). For services in DC metro: fringe 25-35%, overhead 50-90%, G&A 12-22% are typical ranges. Rates significantly outside this range signal either inefficiency (too high) or under-costing (too low).

What’s the difference between profit and fee? Profit is applied to fixed-price contracts (percentage of total cost). Fee is applied to cost-reimbursable contracts (fixed dollar amount, not percentage — that would incentivize you to inflate costs). Both represent your return on the work, but the mechanism differs based on contract type.