How the job pricing calculator works
A job price is built up in four layers rather than guessed as a single number. This calculator adds them in order: labor (hours multiplied by your hourly rate), materials with markup (materials cost plus a percentage to cover sourcing and risk), a share of overhead (the running costs of the business spread across jobs), and finally a target profit margin applied to the whole total.
In formula terms: labor total = hours × rate. Materials total = materials cost × (1 + markup%). Subtotal = labor total + materials total. With overhead = subtotal × (1 + overhead%). Suggested job price = with-overhead total ÷ (1 − margin%). Profit = job price − with-overhead total.
Using the defaults — 6 hours at $45/hr, $180 of materials at a 15% markup, 10% overhead, and a 20% target margin — labor comes to $270.00, materials with markup come to $207.00, the subtotal is $477.00, with overhead it's $524.70, and the suggested job price works out to $655.88, leaving $131.18 of profit.
The margin vs markup trap
This is where a lot of underquoting quietly happens. Markup is profit expressed as a percentage of cost. Margin is profit expressed as a percentage of the final price. They sound similar and get used interchangeably in conversation, but they are not the same number, and the gap gets bigger as the percentage rises.
A 20% margin means the price equals cost divided by 0.80 — which works out to roughly a 25% markup on cost. If you instead just add 20% on top of your cost, thinking that's your margin, you've actually only booked a 16.7% margin. Do that across every job for a year and the shortfall adds up to real money that should have gone into overhead reserves, slow-season buffer, or profit — not quietly evaporated because two similar-sounding words got swapped.
Why a materials markup is legitimate
Marking up materials isn't overcharging the customer for parts — it's compensation for the time spent sourcing and picking them up, the risk of eating the cost if something is returned or damaged on site, and effectively a short warranty you're extending on parts you installed. Most trades carry some materials markup for exactly these reasons; the right percentage depends on how much sourcing effort and risk is actually involved in your work.
Day rate vs itemized quote
Some jobs suit a flat day rate more than an itemized build-up like this one — particularly repeat work, or jobs where scope is hard to pin down in advance. This calculator is aimed at itemized quoting, where a client can see roughly what they're paying for. Either approach can work; the important thing is picking one deliberately rather than defaulting to whichever feels less awkward to say out loud.
When to walk away from price-shoppers
A suggested price only helps if you're willing to hold it. Customers who are shopping purely on price, pushing hard for a discount before you've even started, or asking you to strip out margin "just this once" are often signaling that the relationship will be difficult on every future job too — call-backs, delayed payment, scope creep. A price built from real costs and a real margin is a reasonable starting point for a negotiation, not an opening bid to be talked down from by default.
This page is general educational information about how a job price can be built up from cost layers. It is not business, financial or tax advice, and it does not set or endorse any rate, markup or margin for any trade or region. Always check your own costs and local market conditions before quoting.