Construction estimate calculator with overhead and profit
Your bid price is direct cost plus general conditions, company overhead and profit, less any discount. This calculator shows each step and what profit survives the discount.
Construction estimate calculator with overhead and profit: run the calculator
Bid price from direct cost, overhead and profit
Fill in what each trade costs, then the rates that turn cost into a price. The result recalculates as you type and never leaves the browser.
Bid price and coverage
Net bid: $453,898.89
- Direct cost of the trades
- $375,000.00
- General conditions
- $22,500.00
- Cost of work
- $397,500.00
- Company overhead
- $35,775.00
- Total cost
- $433,275.00
- Profit before discount
- $34,662.00
- Bid before discount
- $467,937.00
- Discount
- -$14,038.11
- Net bid
- $453,898.89
- Sales tax
- $0.00
- Contract total
- $453,898.89
Margin, markup and the discount limit
- Cover above direct cost
- $78,898.89
- Profit left after the discount
- $20,623.89
- Effective margin
- 4.54%
- Effective markup on total cost
- 4.76%
- Discount that leaves no profit
- 7.41%
The tax line applies the rate you type to the net bid. That is arithmetic and not tax advice; which rate a contract carries is a question for your accountant.
Net bid = direct cost × (1 + general conditions) × (1 + company overhead) × (1 + profit) × (1 − discount). In margin mode the profit factor becomes a division: total cost ÷ (1 − margin), and the bid before discount is that figure ÷ (1 − discount).
Construction estimate calculator with overhead and profit: what it answers
A bid that only adds a round percentage to material and labor hides the two costs that decide whether the job pays: the general conditions the site consumes, and the share of the office the job has to carry. This calculator separates them. You enter the direct cost of each trade, then the rates for general conditions, company overhead and profit, and the arithmetic runs in the order an estimator works.
The discount field is where most bids lose money. A discount is taken off the finished price, not off cost, so it comes straight out of profit. At an eight percent markup, a discount of 7.41 percent leaves nothing at all. The calculator prints that break-even discount next to the result, together with the margin and the markup the bid actually earns once the reduction is applied.
Construction estimate calculator with overhead and profit: how the result is worked out
Direct costs are added across the trades. General conditions are a percentage of that sum and give the cost of work. Company overhead is a percentage of the cost of work and gives total cost. Profit is then added one of two ways: as a markup on total cost, or as a margin of the selling price, where price equals total cost divided by one minus the margin. The discount comes off the resulting price, and tax is charged on what is left.
Two habits decide whether the numbers hold. Set the overhead rate from last year's accounts divided by the volume you actually turned over, not from a figure someone quoted; an office that costs 9 percent of a 4 million dollar year costs 12 percent of a 3 million dollar one. And price the discount before you offer it: builders who work to a margin raise the list price first, so the reduction they hand over is the one they planned.
Construction estimate calculator with overhead and profit: what the result assumes
The trade figures are direct cost only: labor, material, equipment and subcontract price for work that ends up in the building. Anything that serves the site as a whole belongs in general conditions, or it gets counted twice.
General conditions and company overhead are entered as rates. They are only as good as the accounts they come from, and a rate carried over from a busier year understates what the office now costs per job.
Sales tax is preset to zero because most US states tax construction materials when the contractor buys them rather than taxing the contract sum. Where the contract itself is taxable, enter the combined state and local rate.
The result is an estimate of price, not of cost certainty. Nothing here carries a contingency for unknown ground, redesign or a supplier increase; that belongs in the trade lines as a separate allowance.
Construction estimate calculator with overhead and profit: questions and answers
What is the difference between markup and margin on a bid?
Markup is measured against cost, margin against price. A 10 percent markup on 100,000 dollars of cost gives a bid of 110,000 and a margin of 9.1 percent. To earn a 10 percent margin on the same cost you must bid 111,111. The switch above runs the calculation both ways.
How much should a builder add for overhead and profit?
There is no industry figure to copy. Overhead is your own annual office cost divided by the volume you expect to sell, and profit is what the risk of the job is worth. Take both from your accounts; a borrowed percentage is the fastest way to bid a losing job.
Does a discount come out of profit or out of overhead?
Out of profit first, then out of overhead. Cost does not fall because you reduced the price. The calculator shows the discount that would take profit to zero, and once the reduction passes that point the bid is no longer covering the office.
Can I use this for a change order?
Yes, for the pricing itself. Enter the added trade cost and the same rates, and the result is what the change should sell for. What it cannot do is carry the time impact or the effect on the schedule of values, which have to sit with the contract.
Construction estimate calculator with overhead and profit: use it on your own projects
Inside Home Builder Software the same calculation reads the project file, so the figure carries the budget, the awards and the invoices behind it instead of asking you to retype them.