What Is Flat Rate Pricing?

By BRIX Editorial Team · Updated October 12, 2026

Flat rate pricing means charging a fixed, upfront price for a defined task, no matter how long it takes. The price is built from standard task hours times your billable hourly rate, plus parts at your markup. A furnace igniter swap costs the customer the same whether the tech finishes in 40 minutes or 90.

Key takeaways

Flat rate price = (Task hours × Billable hourly rate) + (Parts cost × (1 + Parts markup)).
The customer approves the price before work starts, so there's no meter running and fewer billing arguments.
Fast, skilled techs earn the company more gross profit per hour; slow jobs cost the company, not the customer.
A pricebook only works if task times and parts costs are checked against real jobs and updated when supplier prices change.
Flat rate fits repeatable service and repair tasks. Large, uncertain or open-ended work is often better priced as time and materials or a custom bid.

How does flat rate pricing work?

Flat rate pricing works by pricing the task, not the hour. The tech diagnoses the problem, finds the matching task in the company's pricebook, and gives the customer one total price before touching a tool. If the customer approves, that's the bill. If the job runs long, the company absorbs it; if it goes quickly, the company keeps the difference.

Behind every flat price is the same arithmetic you'd use for an hourly job. It's just done once, ahead of time, for each task you perform often. The difference is who carries the risk of the clock: on time and materials it's the customer, on flat rate it's you.

Flat rate price

Flat rate price = (Task hours × Billable hourly rate) + (Parts cost × (1 + Parts markup))

Task hours: the standard time for the task on a typical job, including setup, cleanup and paperwork
Billable hourly rate: what one billable hour must earn to cover burdened labor, overhead and profit
Parts cost: what you pay your supplier for the parts the task uses
Parts markup: your markup on parts, as a decimal (50% = 0.50). See markup

How do you calculate a billable hourly rate for flat rate?

Your billable hourly rate is what each hour a tech spends on a paying job has to bring in. Start from the tech's burdened labor cost, divide it by the share of paid hours that are actually billable, add overhead per billable hour, then price for your profit target. Using the wage alone is the most common reason flat-rate books lose money.

The flat rate pricing calculator runs the same math for your own rate and tasks, and the job pricing calculator handles one-off jobs that aren't in your book yet.

Why does flat rate reward fast techs?

Flat rate rewards speed because the price is fixed while the labor cost isn't. When a skilled tech beats the book time, the extra hour stays with the company as gross profit and frees the tech for the next call. On hourly billing, the same skill lowers the invoice and the company earns less for doing better work.

The same $450 fan motor job: fast tech vs. slow tech (illustrative)
	Fast tech (1 hour)	Slow tech (2.25 hours)
Customer pays on flat rate	$450	$450
Customer would pay hourly ($180/hr + $180 parts)	$360	$585
Labor cost at $42/hr	$42	$94.50
Gross profit on flat rate (after $120 motor)	$288	$235.50
Gross profit per hour on flat rate	$288	$104.67

On hourly billing, the slow job costs the customer $225 more than the fast one. On flat rate, the customer pays the same and the company sees the difference in gross profit per hour.

What is a flat rate pricebook?

A flat rate pricebook is the list of every task your company performs with its fixed price, standard time and parts. Techs use it in the field to quote on the spot, and it keeps prices consistent from tech to tech. Most shops build it as a digital price list inside their quoting software so prices update when costs change.

1
List your top tasks.
Pull the last year of invoices and list the 50 to 100 repairs and services you do most. That covers most calls.
2
Set a standard time for each.
Use your own job history: the time a competent tech takes on a typical job, including setup, cleanup and paperwork. Don't use your fastest tech's best day.
3
Attach the parts.
Link each task to the parts it uses at current supplier cost, with your parts markup.
4
Price it with your billable rate.
Apply the formula above. Round to clean numbers customers can read easily.
5
Check it every quarter.
Compare actual time and parts on finished jobs with the book. Job costing shows which tasks are underpriced.

Flat rate pricing by trade

Flat rate works best where the same tasks repeat and a tech can see the whole problem before quoting. Here's where it fits in each trade and where it doesn't.

Where flat rate fits, by trade
Trade	Good flat-rate tasks	Usually not flat rate	Watch out for
HVAC	Capacitors, motors, igniters, tune-ups, thermostat installs	Duct redesigns, hard-to-diagnose intermittent faults	Attic and rooftop access adding hours the book didn't plan for
Plumbing	Faucet and toilet swaps, water heater replacements, drain clearing	Slab leaks, repiping, sewer lines with unknown condition	Old shutoff valves that break and turn a 1-hour job into 3
Electrical	Outlet and switch swaps, fixture installs, EV charger installs with set run lengths	Troubleshooting with no known cause, old-house rewiring	Panel upgrades where utility or permit delays add trips
Garage door	Spring and opener replacements, roller and cable jobs	Custom door installs	Parts price swings on springs and openers
Pest control	Per-visit treatments, inspections	Severe infestations needing multiple visits	Underpricing follow-up visits included in the flat price
Cleaning	Per-room or per-visit rates	Move-out and post-construction cleans of unknown condition	Homes that take twice the planned time

Roofing and remodeling jobs are usually priced as custom bids from a site measurement rather than from a task pricebook.

Should HVAC companies use flat rate or time and materials?

For routine residential service and repair, many HVAC companies prefer flat rate because customers get a firm price before work starts and efficient techs make more money per hour. Time and materials still makes sense for open-ended work such as troubleshooting with no clear cause, commercial service contracts that specify hourly rates, and jobs where the scope can't be seen up front. Plenty of shops use both. See time and materials pricing for the side-by-side comparison.

Is flat rate better for customers?

Flat rate is better for customers who want to know the price before they say yes, and that's most homeowners. They don't watch the clock or wonder why the tech went to the supply house. The tradeoff is that a quick job doesn't come out cheaper. Presenting a few options at different prices with good-better-best pricing gives them control without haggling over hours.

Common flat rate pricing mistakes

Building the rate from wages. $30 an hour times a multiplier ignores burden, non-billable time and overhead. Start from cost per billable hour.
Using best-case task times. Book times should reflect a typical job, not your fastest tech on an easy house.
Never updating parts prices. A pricebook built on last year's supplier costs quietly erodes margin.
Forcing everything into the book. Open-ended work priced flat is a gamble. Quote it as a custom job or time and materials.
No plan for surprises. When a seized valve or rotted framing changes the job, stop and get a new approval or change order before continuing.
Paying techs hourly and never measuring speed. If you don't track gross profit per hour, you can't see which techs make flat rate work.

Frequently asked questions

What is flat rate pricing in HVAC and plumbing?

It's charging a set price for each repair or service, decided before the work starts, instead of billing by the hour. The tech diagnoses the problem, looks up the task in the company's pricebook and quotes one total. The customer pays that price whether the job takes less or more time than planned.

Is flat rate pricing better than hourly?

For repeatable service work, flat rate usually works better for both sides: customers get a firm price and efficient techs earn the company more per hour. Hourly or time and materials is better when the scope is unknown, because a fixed price on open-ended work puts all the risk on you.

How do you create a flat rate price book?

List your most common tasks from past invoices, set a realistic standard time for each, attach the parts at current cost and your markup, then price labor at your billable hourly rate. Review actual times and parts costs against the book every quarter and update prices when they drift.

What happens if a flat rate job takes longer than expected?

The company absorbs the extra time and the customer pays the quoted price. That's the deal. The exception is when the job itself changes, such as a broken shutoff valve or hidden damage; then the tech should explain the new problem and get approval for a new price before continuing.

How much should I charge per hour for HVAC work?

Work it out from your own costs rather than copying a competitor. Divide a tech's burdened hourly cost by the share of hours that are billable, add overhead per billable hour, then divide by one minus your profit target. A $42 burdened tech at 60% billable with $62.50 of overhead per hour needs roughly $177 an hour for a 25% profit on labor.

Do customers prefer flat rate pricing?

Many homeowners do, because they know the total before agreeing and don't have to watch the clock. The key is a clear explanation of what the price includes. Offering two or three options at different prices also helps customers feel in control of the decision.