How to Calculate Equipment Cost Per Hour for Heavy Civil Bids
To calculate equipment cost per hour, add a machine's ownership costs (depreciation, cost of money, insurance, taxes, and storage) to its operating costs (fuel, lube, repairs, and wear items), then divide each annual cost by the hours the machine actually works. The operator, overhead, and profit are added separately.
That sounds simple, and on paper it is. In practice, an hourly equipment rate is one of the easiest numbers in a heavy civil estimate to get quietly wrong. A rate built two years ago, a fuel price from last spring, or a utilization guess that never happened can move a dirt or underground job from profitable to break-even without anyone noticing until the job cost report comes back.
2026 has made the point the hard way. Diesel prices have climbed sharply, and at least one state DOT republished its equipment rates mid-year because of it.
This guide from SharpeSoft walks through every piece of an hourly equipment rate, shows a worked example, and explains how to keep your rates current without rebuilding them by hand every time the market moves.
A quick note: the dollar figures in the worked example below are illustrative, not industry benchmarks. Your own purchase prices, shop records, fuel tickets, and hour meters are always the best source for your rates.
The Two Halves of an Equipment Rate
Every hourly equipment rate has two parts, and they behave very differently.
Ownership costs are the costs of having the machine in your fleet, whether it works or not. Most of them are fixed on an annual basis.
Operating costs are the costs of actually running it. They show up only when the engine is on and the machine is working.
The federal cost principles for construction contracts draw the same line. FAR 31.105 says allowable equipment costs are built from "ownership and operating costs," and that contractors should use "actual cost data" from their own accounting records when it is available for each piece of equipment. When it is not, agencies may fall back on published rate schedules, such as the U.S. Army Corps of Engineers' Construction Equipment Ownership and Operating Expense Schedule.
Keeping the two halves separate is not just bookkeeping. It is what lets you price idle time, overtime, and rented equipment correctly, which we will get to below.
Ownership Costs: What It Costs Just to Have the Machine
Ownership costs keep running whether the machine is digging or parked in the yard.
The main pieces are:
Depreciation. The delivered purchase price (after any discounts, plus sales tax and freight) minus the expected salvage value at the end of its useful life, spread across the hours you expect it to work.
Cost of money. The interest you pay on the loan, or the return you give up by tying cash up in iron instead of somewhere else. Many contractors apply an interest rate to the machine's average investment over its life.
Insurance and property taxes. Usually figured as a percentage of the machine's value each year.
Storage and yard costs. The share of your yard, shop, and security costs that this machine takes up.
Major overhauls. Engine and drivetrain rebuilds are often treated as an ownership cost and spread across the machine's life, rather than charged to whichever job happens to be running when the engine fails.
The key word in that list is annual. Because these are yearly costs, the hourly figure depends entirely on how many hours you divide them by.
Operating Costs: What It Costs to Run It
Operating costs scale with use. FAR 31.105 lists them as "fuel, filters, oil, and grease; servicing, repairs, and maintenance; and tire wear and repair."
In practice that means:
Fuel. Gallons burned per hour times your delivered fuel price. This is the most volatile line in the rate.
Lube, filters, and grease. Often tracked as a percentage of fuel cost or as a separate hourly figure from your service records.
Repairs and maintenance. Parts and shop labor for routine and unplanned repairs, best pulled from your own work order history by machine or machine class.
Wear items. Tires, undercarriage, cutting edges, teeth, and other parts that wear out with use. On a tracked machine working in rock, undercarriage alone can be a significant hourly cost.
Notice what is missing: the operator. Operator wages and burden are a labor cost, priced on the labor side of the crew.
A Worked Example: Building an Hourly Excavator Rate
Here is how the pieces add up for a mid-size hydraulic excavator. Every input is illustrative, so swap in your own numbers.
The inputs:
Delivered purchase price: $350,000
Expected salvage value after 5 years: $105,000
Expected use: 1,400 working hours per year (7,000 hours over its life)
Cost of money: 7% on the average investment
Insurance, taxes, and storage: 2.5% of the average investment per year
Fuel burn: 8 gallons per hour
Ownership cost per hour:
Depreciation: ($350,000 minus $105,000) divided by 7,000 hours = $35.00 per hour
Cost of money: the average investment is ($350,000 + $105,000) divided by 2 = $227,500. At 7%, that is $15,925 per year, or $11.38 per hour over 1,400 hours
Insurance, taxes, and storage: 2.5% of $227,500 = $5,688 per year, or $4.06 per hour
Ownership subtotal: $50.44 per hour
Operating cost per hour:
Fuel: 8 gallons at $6.20 per gallon = $49.60 per hour
Lube, filters, and grease (figured here at 15% of fuel): $7.44 per hour
Repairs and maintenance (from shop records): $18.00 per hour
Undercarriage and ground engaging tools: $6.00 per hour
Operating subtotal: $81.04 per hour
Total bare equipment rate: $131.48 per hour, before the operator, overhead, and profit.
Two things stand out. First, fuel is the single largest line in the rate, bigger than depreciation. Second, almost 40% of the rate is ownership cost that depends on a utilization assumption. Those are the two numbers that deserve the most attention.
Utilization: The Number That Changes Everything
The example assumes the excavator works 1,400 hours a year. What if it only works 1,000?
The machine's yearly ownership costs do not change. Depreciation is still $49,000 a year ($245,000 over 5 years), cost of money is still $15,925, and insurance, taxes, and storage are still $5,688. That is $70,613 a year no matter what.
At 1,400 hours a year: $70,613 divided by 1,400 = $50.44 per hour of ownership cost
At 1,000 hours a year: $70,613 divided by 1,000 = $70.61 per hour of ownership cost
That is a $20 per hour difference from one assumption, and it hits every hour the machine is bid. If your rates were built when the fleet was busy and work has since slowed (or the reverse), your ownership costs are being over or under recovered on every job.
The fix is to check utilization against your hour meters or telematics at least once a year, and to update the hours in your rate calculation when reality drifts from the plan. It is also a good test for whether a machine belongs in the fleet at all. A machine that rarely works is often cheaper to rent.
Why Fuel Is the Number to Watch in 2026
Fuel is where 2026 has hit equipment rates the hardest. According to the U.S. Energy Information Administration, the U.S. average on-highway diesel price was $6.199 per gallon for the week of October 5, 2026, up about $2.49 a gallon from the same week a year earlier. (EIA publishes this weekly; figures here were checked October 13, 2026, and the next release is October 14.)
Run that through the worked example. At last year's price of roughly $3.71 a gallon, fuel and lube for the excavator come to about $34.14 an hour. At $6.20, they come to $57.04. That is about $23 per hour more for the same machine doing the same work. Across a 600 hour earthwork job, that is roughly $13,700 on one machine, and most dirt jobs run a whole spread of them.
Public agencies have noticed. Caltrans, which publishes the equipment rates it uses to pay contractors for force account work, released an off-cycle Labor Surcharge and Equipment Rental Rates book effective September 1, 2026. In its words, the book "was published to update equipment rates based on current fuel costs following the increase in fuel prices," with no changes to interest rates, the Producer Price Index, sales tax, or freight.
Because fuel was the only input that changed, comparing the April and September rate files shows how much fuel alone moved equipment costs. Across 2,164 rate lines, the median rate rose about 8.4%.
For the machines that heavy civil contractors run every day, the median increases were higher:
Crawler tractors (dozers): about 9.1%
Rubber tire loaders: about 9.1%
Off-highway trucks: about 9.1%
Motor graders: about 9.4%
Self-propelled scrapers: about 9.4%
Crawler-mounted hydraulic excavators: about 7.9%
Two practical lessons follow. First, price fuel at your actual delivered cost, not the national pump average. Off-road fuel delivered to the job is often priced differently from on-highway diesel, and regional prices vary widely. Second, keep fuel as its own line in the rate rather than buried in a blended number, so you can update it in one place when prices move. For longer jobs, it is also worth reading the fuel adjustment provisions in the contract, which we covered in our post on escalation clauses.
Idle Time, Standby, and Overtime Hours
Splitting ownership from operating cost pays off when a machine is not working a normal shift.
Idle and standby time. When a machine sits on the job waiting, it burns no fuel and causes little wear, but its ownership costs keep running. That is why agencies compensate standby at a reduced rate. FAR 31.105 says that during a suspension of work, the equipment ownership allowance "shall not exceed an amount for standby cost." The Caltrans book applies a Delay Factor that is calculated to include ownership costs "without including operating costs." If you only have one blended hourly rate, you have no clean way to price or claim standby.
Overtime and second shifts. The reverse happens when a machine works more hours than planned. Caltrans explains it plainly: certain equipment costs "are fixed on an annual basis, no matter how many hours are worked," so when equipment works past the estimated hours, "a duplication of payment occurs on the fixed cost portion of the equipment rate." Caltrans uses a reduced rate after eight hours a day for that reason.
Contractors can use the same logic on bid day. If you plan to run owned equipment on long shifts, a reduced rate for hours over the normal day can make your price sharper without costing you anything you were not already recovering.
Owned vs. Rented Equipment
Rented equipment is priced differently because the ownership costs belong to someone else.
For owned equipment, build the full ownership plus operating rate described above.
For rented equipment, start with the rental rate (converted to an hourly figure based on how many hours you expect to run it per day, week, or month), then add the costs the rental house does not cover:
Fuel, plus any refueling charges if the machine goes back less than full
Delivery and pickup
Damage waiver or insurance
Routine maintenance and minor running repairs, if they are your responsibility under the rental agreement
Do not expect a rental yard's rate to match your own calculated cost. As the Caltrans book notes, a calculated ownership and operating rate "is likely to be lower than the rate charged by a rental yard," because the rental rate "may include additional overhead and profit as well as a premium for short-term rentals." That gap is exactly why the own-or-rent decision deserves a real comparison, using your actual utilization, rather than a gut call.
What Does Not Belong in the Equipment Rate
A clean equipment rate leaves some costs out on purpose, so they are not counted twice.
The operator. Wages and labor burden are priced on the labor side. The Caltrans book states that "the operator cost is not included in the equipment rate."
Mobilization and hauling. Moving equipment to and from the job is usually priced separately, by item or with a hauling calculation.
Company overhead and profit. FAR 31.105 notes that "labor, mobilization, demobilization, overhead, and profit are generally not reflected" in published equipment rate schedules. Caltrans adds a separate 15 percent markup for overhead on force account equipment for the same reason.
Keeping these out of the bare rate lets you apply markup in one consistent place, which also makes your unit prices easier to defend if an agency reviews them. Our post on unit price vs. lump sum bids explains why that matters on DOT work.
How SharpeSoft Estimator Helps
The SharpeSoft Estimator is built to keep equipment rates detailed, current, and consistent across every estimator in your company:
A built-in Equipment Rate Calculation. Enter purchase price, discount, tax rate, interest rate, number of payments, balloon period, scrap value, usage life in years, and usage in hours, and the Estimator calculates the hourly rate and loads it into your tables. See how in Equipment Rate Calculation and Adding a New Piece of Equipment.
Rates by area. Keep a DOT rate, a rental rate, and a standard bidding rate for the same machine, each with its own fuel and oil costs and owned or rented status. Learn more in Equipment Rates by Area.
One-click updates when fuel moves. Push updated equipment rates through an active job without leaving the bid. See Update Equipment Rates.
Threshold hours for long shifts. Set a daily hour threshold and a discount by equipment group for owned equipment, so hours past a normal day can be priced lower, the same logic agencies use for overtime. See Equipment Threshold Hours.
Owned vs. rented tracking. Mark each machine as owned or rented and filter your Equipment Summary report either way. See Viewing or Changing Owned or Rented Equipment.
Operators linked to machines. Link a labor item to a piece of equipment so they come into the bid together, with wages pulled from the right labor area. See Linking Equipment to Labor.
Hauling and indirects. Figure hauling production inside the bid with the Equipment Hauling Calculation, and adjust indirect overhead costs on equipment from the Summary window.
Because the Estimator saves to a shared database in real time, a rate updated by one estimator is available to everyone on the team as soon as it is saved, so nobody bids tomorrow's job with last quarter's fuel price.
Frequently Asked Questions
How do you calculate equipment cost per hour?
Add up the machine's yearly ownership costs (depreciation, cost of money, insurance, taxes, and storage) and divide by the hours it works per year. Then add the hourly operating costs: fuel, lube, repairs and maintenance, and wear items such as tires or undercarriage. The total is the bare equipment rate, before the operator, overhead, and profit.
What is the difference between ownership and operating costs?
Ownership costs are the costs of having the machine, whether it works or not, such as depreciation, interest, insurance, and storage. Operating costs only happen when it runs, such as fuel, lube, repairs, and wear. Keeping them separate lets you price standby time, overtime, and rented equipment correctly.
Should the operator be included in the equipment rate?
Usually not. Most contractors and agencies price the operator as labor and the machine as equipment. Caltrans, for example, states that the operator cost is not included in its equipment rates. Linking the operator to the machine in your estimating software keeps them together in the bid without mixing the costs.
How often should equipment rates be updated?
Review the full rate at least once a year, when you have a year of hour meter readings and shop costs. Update fuel whenever prices move significantly. In 2026, diesel prices rose enough that Caltrans republished its equipment rates mid-year.
How do you price idle or standby equipment?
Idle equipment still carries its ownership costs but burns little or no fuel, so standby is normally priced at the ownership portion of the rate only. Federal cost rules and many state DOT specifications limit standby compensation this way, so check your contract's suspension and delay provisions.
Conclusion
An hourly equipment rate is only as good as the assumptions behind it. Split ownership from operating cost, build each from your own records, divide ownership by the hours your machines really work, and keep fuel on its own line so you can update it when the market moves. Then add the operator, overhead, and profit separately, in one consistent place.
Contractors who do this can price standby and overtime correctly, make better own-or-rent calls, and bid with confidence that the iron on the job is paying for itself.
Start a free trial of the SharpeSoft Estimator or get in touch with our team to see how it handles equipment rates, areas, and updates on your next bid. We have been building estimating software for heavy civil contractors for over 40 years, and most customers are up and running in about two weeks.
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