Indirect Cost Rate Calculator
Indirect Cost Rate Calculator
| Indirect Rate Breakdown | Amount |
|---|---|
| Total Indirect Costs | $180,000 |
| Direct Labor | $600,000 |
| Direct Materials | $250,000 |
| Other Direct Costs | $50,000 |
| Total Direct Costs | $900,000 |
| Indirect Rate on Direct Labor | 30.0% |
| Indirect Rate on Total Direct | 20.0% |
| Indirect Rate per Labor Hour | $12 |
| G&A Allocation ($45,000) | $45,000 |
| Combined Indirect + G&A Rate | 25.0% |
| Bid Pricing Markup | 10.0% |
Summary
What Is an Indirect Cost Rate Calculator?
An indirect cost rate calculator estimates the rate at which overhead costs should be allocated to a company's direct work, which is essential for accurate job costing, pricing, and government contract billing. Indirect costs are the expenses that support the business but cannot be traced to a specific project or product: rent, utilities, management salaries, insurance, and administrative support. Because these costs are real but unattributable, they are assigned to work through an indirect rate, which is the indirect cost pool divided by a direct cost base such as direct labor, total direct costs, or labor hours. Government contractors and grant-funded organizations negotiate these rates with their funding agencies, and every business that prices work needs them to ensure overhead is recovered. This calculator computes the rate against the three standard bases and adds a combined rate that includes general and administrative costs.
How It Works
The four core inputs are the total indirect costs, the direct labor costs, the direct materials, and the other direct costs. The total direct costs sum the labor, materials, and other lines, and the rate on direct labor divides the indirect pool by the direct labor, producing the most commonly used rate for labor-heavy businesses: with the default inputs, $180,000 of indirect costs against $600,000 of direct labor yields a 30% rate. The rate on total direct costs divides the indirect pool by the full direct base, the rate per labor hour divides it by the direct labor hours, and the advanced options add the labor hours, the general and administrative costs, and the bid pricing markup. The combined rate adds the G&A costs to the indirect pool before dividing by the total direct costs, which is the rate used when quoting fixed-price work, and the bid markup percentage is applied on top when converting cost into a selling price. The outputs give the complete family of rates for cost allocation and pricing decisions.
Understanding Your Results
The rate on direct labor is the number to use for labor-driven businesses and time-and-materials contracts, while the rate on total direct costs better suits businesses with heavy materials, and the rate per labor hour works for hourly billing. The combined rate including G&A is the one that must cover all costs for fixed-price work, and if it is materially higher than your competitors' effective rates, your overhead structure needs examination. The bid markup is the profit component, and it is applied after the combined rate so that it earns profit on the recovered costs as well. For government work, the negotiated indirect rate is binding, so track the actual indirect pool and direct base quarterly and adjust interim billing rates when the year-to-date rate diverges from the negotiated rate. Re-run the calculator whenever the cost structure changes materially.
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