How do you calculate asphalt job margin?

Subtract estimated job cost from quoted revenue to get gross profit, then divide by the reference basis (usually revenue). With $145,000 revenue and $121,000 cost, gross profit is $24,000 and margin is 16.55%.

What is a good margin on an asphalt paving job?

Competitive public bids often land in the high single digits to mid teens at the gross level; the 16.55% in the example is a healthy spread. Private and commercial work can carry more. Always confirm overhead is covered before the percent looks attractive.

Is this gross margin or net margin?

It's gross margin, profit after direct job cost but before company overhead, G&A, and taxes. A strong gross margin can still net to nothing if overhead absorption is high.

Why divide by a reference basis instead of always revenue?

Margin on revenue and markup on cost are different numbers. The reference field lets you compute either; dividing $24,000 by the $145,000 revenue gives the 16.55% margin, while dividing by cost would give the markup.

How do AC price swings affect this margin?

Liquid asphalt cement is the single largest material cost. A mid-job AC increase raises estimated cost, shrinking the $24,000 profit. Many contracts include an AC price-adjustment clause specifically to protect this margin.

Margin vs markup, what's the difference here?

Markup is profit over cost ($24,000 / $121,000 = 19.8%); margin is profit over revenue ($24,000 / $145,000 = 16.55%). Bidders often quote markup but track margin, so name the basis explicitly.

Asphalt, Road Materials & Paving Products calculator

Asphalt Job Margin Calculator

Margin is the number that decides whether a paving job is worth bidding. Asphalt work runs on thin spreads against volatile liquid-AC and diesel prices, so an estimator needs to see gross profit in both dollars and percent before committing crews and a paver for weeks. This calculator takes quoted job revenue and estimated job cost and returns the gross profit and the margin against a reference basis. Owners and estimators use it to screen bids, set minimum-acceptable thresholds, and sanity-check that a low bid still clears overhead.

What this calculator does

Calculate paving margin percent from quoted revenue, estimated asphalt job cost, and reference revenue or cost basis.
a contractor needs to check margin before submitting a paving bid, accepting a change order, or committing plant and crew time
It computes gross profit dollars (quoted revenue minus estimated cost) and expresses it as a percent margin against a chosen reference basis, normally revenue.

Formula used

Gross profit dollars = quoted asphalt job revenue - estimated asphalt job cost
Asphalt job margin = gross profit dollars ÷ margin reference basis

Inputs explained

Quoted asphalt job revenue:
Estimated asphalt job cost:
Margin reference basis (usually revenue):

How to use the result

Use it during bid preparation to screen a job's profitability, or after award to track quoted margin against actuals as the work progresses.
It uses estimated cost, so the margin is only as good as the takeoff; unhedged AC and diesel price swings or weather delays can erode the real margin after award.

Common questions

How do you calculate asphalt job margin? Subtract estimated job cost from quoted revenue to get gross profit, then divide by the reference basis (usually revenue). With $145,000 revenue and $121,000 cost, gross profit is $24,000 and margin is 16.55%.
What is a good margin on an asphalt paving job? Competitive public bids often land in the high single digits to mid teens at the gross level; the 16.55% in the example is a healthy spread. Private and commercial work can carry more. Always confirm overhead is covered before the percent looks attractive.
Is this gross margin or net margin? It's gross margin, profit after direct job cost but before company overhead, G&A, and taxes. A strong gross margin can still net to nothing if overhead absorption is high.
Why divide by a reference basis instead of always revenue? Margin on revenue and markup on cost are different numbers. The reference field lets you compute either; dividing $24,000 by the $145,000 revenue gives the 16.55% margin, while dividing by cost would give the markup.
How do AC price swings affect this margin? Liquid asphalt cement is the single largest material cost. A mid-job AC increase raises estimated cost, shrinking the $24,000 profit. Many contracts include an AC price-adjustment clause specifically to protect this margin.

Last reviewed 2026-05-12.