How to Calculate Your Contractor Overhead Rate (and What's Normal by Company Size)
Quick answer: Calculate your contractor overhead rate by adding up your annual overhead costs and dividing them by either your annual revenue or annual direct job costs, depending on what you are trying to measure. If you use direct costs as the basis, the result tells you how much overhead markup you need to recover through your bids. For example, $180,000 in annual overhead divided by $720,000 in annual direct costs equals a 25% overhead markup on direct costs.
The important part isn't finding a percentage that sounds normal. It's calculating your own overhead accurately and making sure your pricing recovers it.
Many contractors know overhead is "somewhere in there" on every bid, but they aren't actually adding a specific number. They're padding the price a little and hoping it covers the truck payment, insurance renewal, accountant's invoice, and everything else it takes to keep the business running.
That's not a reliable pricing strategy. If you don't know your overhead rate, you're guessing at how much each job needs to contribute toward the cost of running your company.
Here's how to calculate it, how to think about what's normal, and how to use the number when pricing your work.
What Counts as Contractor Overhead?
Overhead is generally made up of business expenses that support the company as a whole rather than one specific job.
Common examples include:
Office or shop rent and utilities
General business insurance
Office and administrative staff
Bookkeeping and accounting
Software and technology
Marketing and advertising
General vehicle and equipment expenses
Business licenses and professional fees
Office supplies and communication expenses
Other administrative costs that aren't assigned to a specific project
The dividing line is whether a cost can reasonably be traced to a particular job.
For example, materials purchased for a specific project are generally a direct job cost. So are field labor and subcontractor costs associated with that project. A permit required specifically for one job would normally be included in that job's costs rather than buried in general overhead.
Labor-related costs such as payroll taxes, workers' compensation, and benefits may also be treated as direct labor burden when they can be tied to the employees working on a project.
The IRS similarly distinguishes between direct and indirect costs for certain business and cost-accounting purposes, although the exact treatment of expenses depends on the business and accounting method.
The simplest rule for estimating purposes is:
If one specific job is responsible for the cost, look at it as a direct job cost. If the business carries the cost regardless of which jobs are sold, it may belong in overhead.
How Do You Calculate a Contractor Overhead Rate?
There are two useful ways to calculate overhead, and they answer slightly different questions.
Overhead as a Percentage of Revenue
Use this formula when you want to know how much of your sales revenue is being consumed by overhead:
Overhead % of Revenue = Total Annual Overhead ÷ Total Annual Revenue × 100
For example:
Annual overhead: $180,000
Annual revenue: $900,000
$180,000 ÷ $900,000 = 20%
In this example, 20% of revenue is going toward overhead before considering profit.
Overhead as a Percentage of Direct Costs
You can also calculate overhead as a percentage of your direct job costs:
Overhead Markup = Total Annual Overhead ÷ Total Annual Direct Costs × 100
For example:
Annual overhead: $180,000
Annual direct costs: $720,000
$180,000 ÷ $720,000 = 25%
This means you need to recover an additional 25% of your direct costs to cover $180,000 of annual overhead, assuming your projected direct costs remain at $720,000.
These two percentages aren't interchangeable. In this example, overhead is 20% of revenue but requires a 25% markup on direct costs to recover the same $180,000.
That's why it's important to know which calculation you're using when comparing your numbers with another contractor's benchmark.
That overhead rate is one piece of a bigger equation - see how it fits into a complete contractor bid formula that also accounts for labor, materials, and profit margin.
Example: How Overhead Affects a Contractor's Bid
Suppose a contractor estimates a project will have:
$12,000 in materials
$8,000 in direct labor
$5,000 in subcontractor and other direct costs
The total direct cost is $25,000.
If the contractor's overhead markup on direct costs is 25%, the project needs to contribute:
$25,000 × 25% = $6,250 toward overhead
At that point:
$25,000 direct costs + $6,250 overhead recovery = $31,250
The contractor still hasn't accounted for profit.
That's an important distinction: overhead is a cost of running the business, not profit.
Your pricing needs to cover your direct job costs, recover your share of overhead, and then leave enough for your desired profit.
What's a Typical Contractor Overhead Rate?
There isn't one overhead percentage that's normal for every contractor.
The right number can vary significantly based on:
Trade and type of work
Annual revenue
Number of employees
Number of crews
Office and shop space
Vehicle and equipment costs
Administrative staff
Insurance costs
Geographic market
Amount of work performed directly by the owner
How efficiently the company uses its employees and equipment
Published construction benchmarks also vary depending on whether overhead is expressed as a percentage of revenue, a percentage of direct costs, or as part of an overall markup.
That's why a contractor shouldn't look at a number from another company and automatically assume it should apply to their own bids.
A solo contractor working out of a home office may have a very different cost structure from a contractor with multiple crews, several trucks, a shop, office employees, and a full administrative operation.
Instead of asking, "What's the normal overhead rate?" the more useful question is:
"What does it actually cost to operate my business, and how much does each job need to contribute toward that cost?"
Your own financial statements can answer that question better than an industry average.
Does Overhead Increase as Your Company Gets Bigger?
It can, but company size doesn't automatically determine your overhead rate.
As a contractor grows, the business may take on additional costs such as:
More vehicles
Larger equipment expenses
Shop or warehouse space
Office employees
Estimators and project managers
Additional software
Higher insurance premiums
More marketing
Accounting and professional services
Those expenses can increase total overhead.
At the same time, a larger contractor may spread certain fixed costs across a larger volume of work. For example, a $60,000 office expense represents a much larger percentage of revenue for a $500,000 contractor than for a $5 million contractor.
So don't assume that a larger company should automatically have a higher overhead percentage.
Total overhead and overhead as a percentage of revenue are two different things.
That's another reason to calculate your own numbers instead of relying entirely on a company-size benchmark.
Why Does Your Overhead Rate Matter?
An inaccurate overhead rate can cause problems in either direction.
If Your Rate Is Too Low
You may win plenty of work but still struggle to generate enough money to cover your business expenses.
The problem isn't necessarily that your jobs are losing money individually. The problem may be that your prices aren't contributing enough toward the costs that happen between jobs and across the entire business.
If Your Rate Is Too High
You may build more overhead into your pricing than your business actually needs to recover.
That can make your bids less competitive, particularly if your competitors have a different cost structure.
The goal isn't to use the highest possible overhead percentage.
The goal is to use a realistic, current number based on your actual business costs.
Overhead vs. Profit: What's the Difference?
This is one of the most important distinctions to make when pricing a job.
Overhead pays for the business. Profit is what the business earns after its costs are covered.
For example, suppose a job has $20,000 in direct costs and your pricing needs to recover $5,000 in overhead.
You're at:
$20,000 direct costs + $5,000 overhead = $25,000
That $5,000 isn't profit. It is recovering the portion of your business expenses assigned to the work.
You would then need to account for your desired profit when determining the final selling price.
Also be careful not to confuse markup with profit margin. A 25% markup on $20,000 adds $5,000 and produces a $25,000 selling price. The $5,000 represents a 20% margin on the final price, not a 25% margin.
That distinction becomes especially important when you're working backward from a desired profit margin.
How Often Should You Recalculate Your Overhead Rate?
At least quarterly is a reasonable schedule for reviewing your overhead, especially if your business is growing or your costs are changing.
You should also revisit your numbers when you make a significant change, such as:
Buying a new truck or major piece of equipment
Hiring or losing an employee
Adding a shop or office
Moving to a larger facility
Taking on additional software or services
Experiencing a significant insurance increase
Changing your marketing budget
Adding administrative or management staff
You don't necessarily need to completely rebuild your pricing model every month.
But you should know whether your actual overhead is tracking with the number you're using to price jobs.
An overhead rate calculated two years ago and never reviewed again may no longer reflect the business you're running today.
Should You Show Overhead as a Line Item on Quotes?
Not necessarily.
Many contractors build overhead into their overall pricing rather than showing customers exactly how much they're allocating for office expenses, insurance, administration, and other business costs.
Other contractors may separate overhead and profit on certain types of estimates or contracts.
The important part is that your pricing accounts for overhead whether or not the customer sees it as a separate line item.
Your customer is ultimately buying the completed work—not a breakdown of how much your office rent or accounting software costs.
How Can Contractors Reduce Unnecessary Overhead?
Calculating your overhead rate tells you what you're carrying. The next step is understanding what's driving that number.
Look for expenses that have gradually increased without adding much value to the business.
For example:
Are you paying for software nobody uses?
Have supplier prices increased without being reviewed?
Are recurring expenses being automatically renewed?
Are administrative tasks taking time that could be handled more efficiently?
Are you spending money on marketing without tracking where leads come from?
Are vehicles or equipment being used efficiently?
Are bookkeeping and financial reports giving you enough information to make decisions?
You don't necessarily need to cut every expense.
Some overhead expenses are necessary to operate and grow the business. The goal is to understand where the money is going and determine whether each expense is justified by what it provides.
How TradesPro Helps Contractors Manage Overhead
Calculating your overhead rate is only useful if you have accurate numbers behind it.
TradesPro Services provides back-office support for contractors in areas that can affect both overhead and day-to-day business operations, including:
Bookkeeping and accounting: Better visibility into where money is going and how actual expenses compare with expectations.
Payroll administration: Help managing payroll processes without adding a dedicated in-house payroll position.
Supplier and pricing management: Monitoring vendors and purchasing costs so price changes don't go unnoticed.
KPI reporting and performance review: Regular reporting that gives you a clearer picture of revenue, expenses, and business performance.
Marketing management: Tracking marketing activity and spending so you can make more informed decisions about where your budget goes.
General administrative support: Handling recurring business tasks that can otherwise take time away from running jobs and managing crews.
The goal isn't simply to calculate your overhead once and forget about it. It's to have a clearer picture of what your business costs to operate and use that information when making pricing and business decisions.
Frequently Asked Questions
What is a typical overhead rate for a contractor?
There is no single overhead rate that applies to every contractor. The number varies based on the trade, company size, revenue, staffing, vehicles, facilities, insurance, and other business expenses. Published benchmarks also differ depending on whether overhead is measured as a percentage of revenue or direct costs. Your own financials are the most useful starting point.
How do you calculate contractor overhead?
Add up your annual overhead expenses and divide them by either annual revenue or annual direct job costs, depending on what you want to measure. For example, $180,000 in overhead divided by $720,000 in direct costs produces a 25% overhead markup on direct costs.
What is the difference between overhead and direct costs?
Direct costs can be traced to a specific job, such as job materials, field labor, subcontractors, and job-specific expenses. Overhead covers the costs of operating the business that aren't assigned to one particular project, such as office expenses, administrative costs, accounting, software, and general business insurance.
Should profit be included in the overhead rate?
No. Overhead and profit are separate. Your overhead rate accounts for the cost of operating the business. Your pricing should then include enough additional markup or margin to produce the profit you want after those costs are covered.
Should I calculate overhead based on revenue or direct costs?
Either calculation can be useful, but they measure different things. Overhead divided by revenue tells you what percentage of sales is consumed by overhead. Overhead divided by direct costs tells you how much markup on direct costs is needed to recover that overhead. Don't compare the two percentages as though they're the same measurement.
How often should I recalculate my contractor overhead rate?
Review it at least quarterly and whenever your business experiences a significant change in expenses, staffing, facilities, equipment, insurance, or other overhead costs. Regular reviews help keep your pricing based on current business costs rather than an outdated estimate.
Disclaimer: This article provides general business and pricing information for educational purposes only. Overhead classification, job costing, markup, profit margins, and tax treatment can vary based on your business structure, accounting method, contracts, and industry. Consult your accountant, bookkeeper, or other qualified professional for advice specific to your business.
