Rex says
Money math without the spreadsheet headache. Plug in your numbers and I'll show you exactly where the dollars land.
Try a scenario
Click to load — tweak from there.Inputs
Result
Jobsite overhead per calendar day
$769.74
Cost for the days entered
$9,237
Total monthly overhead
$23,400
Overhead per week
$5,388
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How to use this
- 1Enter super + pm salary allocation ($/month).
- 2Enter temp facilities & utilities ($/month).
- 3Enter equipment standing by ($/month).
- 4Enter insurance allocation ($/month).
- 5Enter days to price (delay or acceleration).
- 6Read your jobsite overhead per calendar day on the right — it updates as you type.
- 7Hit Share to keep the scenario or send it to someone.
About this calculator
Knowing your jobsite overhead cost per calendar day is the single most useful number for pricing delay claims, evaluating acceleration decisions, and negotiating time extensions, because it converts every schedule day into a dollar figure both sides can argue about concretely instead of abstractly. This calculator sums your recurring daily-equivalent costs — superintendent and PM salary allocation, temp facilities, equipment standing by, insurance allocation, and small tools/consumables — into a single daily rate, then multiplies by any number of delay or acceleration days you want to model. This is the number contractors present in a time impact analysis when seeking extended general conditions compensation for an owner-caused delay, and it's the number you should check before agreeing to accelerate a schedule at your own cost to avoid an LD dispute.
Worked example
Using the values the calculator loads with:
Inputs
- Super + PM salary allocation: 16000 $/month
- Temp facilities & utilities: 3200 $/month
- Equipment standing by: 2800 $/month
- Insurance allocation: 1400 $/month
- Days to price (delay or acceleration): 12
Results
- Jobsite overhead per calendar day: $769.74
- Cost for the days entered: $9,236.84
- Total monthly overhead: $23,400.00
- Overhead per week: $5,388.16
What each field means
Inputs
- Super + PM salary allocation ($/month)
- The super + pm salary allocation used in the calculation, measured in $/month. Starts at 16000 $/month so you have a working example on load.
- Temp facilities & utilities ($/month)
- The temp facilities & utilities used in the calculation, measured in $/month. Starts at 3200 $/month so you have a working example on load.
- Equipment standing by ($/month)
- The equipment standing by used in the calculation, measured in $/month. Starts at 2800 $/month so you have a working example on load.
- Insurance allocation ($/month)
- The insurance allocation used in the calculation, measured in $/month. Starts at 1400 $/month so you have a working example on load.
- Days to price (delay or acceleration)
- The days to price (delay or acceleration) used in the calculation. Starts at 12 so you have a working example on load.
Results
- Jobsite overhead per calendar day
- Returned as a money amount in US dollars and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Cost for the days entered
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Total monthly overhead
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Overhead per week
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
FAQ
Why divide by 30.4 instead of 30 days to get a daily rate?
30.4 is the average number of days per month across a full year (365.25 ÷ 12), which avoids systematically overstating or understating the daily rate depending on which specific months a delay spans. Using a flat 30-day divisor introduces a small but consistent bias that adds up over a long delay claim.
What costs get left out of a jobsite overhead per day claim that shouldn't be?
Contractors often forget extended warranty exposure (a longer schedule can push warranty start dates and coverage windows), home office overhead allocation under an Eichleay-type formula for unabsorbed overhead, and extended bond/insurance premiums tied to the longer duration. These are separate from direct jobsite costs but are legitimate components of a full delay damages claim.
How is this different from general conditions percentage?
General conditions percentage is a bid-time budgeting tool expressing planned GC lump sum as a share of hard cost; jobsite overhead per day is a claims and decision-making tool converting your actual (or planned) GC burn into a daily rate for pricing specific delay or acceleration scenarios after the bid is set. They use the same underlying cost categories but serve different purposes at different project phases.
Can I use this rate to justify accelerating a schedule instead of accepting a delay?
Yes — compare the cost of accelerating (overtime premiums, extra shifts, expedited material costs) against your daily overhead rate times the days you'd save. If acceleration costs less than the extended overhead plus any LD exposure for those same days, it's the better financial call, which is exactly the analysis owners expect to see in a constructive acceleration claim.
Accuracy and limitations
- Results are estimates before tax, fees, and inflation unless an input explicitly covers them.
- Rates are treated as fixed for the whole period — variable-rate products will drift from this projection.
- This is educational maths, not financial advice. Check anything contractual with the lender or your accountant.
Related tools
General Conditions Percentage Calculator
Turn jobsite overhead staffing and rentals into a % of hard cost.
Liquidated Damages Exposure Calculator
Model total LD exposure if substantial completion slips past the deadline.
Weather Delay Days Calculator
Estimate expected weather delay days from historical climate data and schedule.
Cite this calculator
Writing about this topic? Grab a citation — every link helps keep these tools free.
RevenueLab. (2026). Jobsite Overhead Per Day Calculator. Retrieved from https://www.revenuelab.fyi/toolbox/jobsite-overhead-per-day
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/jobsite-overhead-per-day" target="_blank" rel="noopener">Jobsite Overhead Per Day Calculator — RevenueLab</a> (2026).</p>
Source: [Jobsite Overhead Per Day Calculator — RevenueLab](https://www.revenuelab.fyi/toolbox/jobsite-overhead-per-day) (2026).