The honest answer first: we found no verified figure for a plumbing business owner salary, and the free IRS and Census tables we checked publish only at sector level, with nothing broken out by business size.
What the data does show is the frame around the question — what self-employed and employee plumbers earn, what sole proprietors in the specialty trades net on average, and why a plumbing company's revenue tells you almost nothing about what its owner takes home.
Typical plumbing business owner income
Whether the search is typed as a plumbing business owner salary or a plumbing contractor salary, the honest answer is the same: no verified figure breaks owner income out by business size.
The free IRS and Census tables we checked publish owner figures only at sector level for plumbing, heating, and air-conditioning contractors, and the trade-association numbers that circulate are paywalled or unverifiable.
A page quoting dollar ranges per fleet size is drawing on figures we could not check against government data.
The one broad federal anchor is the IRS Statistics of Income (SOI) count of sole proprietors.
In tax year 2023, 2,521,516 nonfarm sole-proprietor returns in specialty trade contractors reported $257.8 billion in business receipts and $40.5 billion in net income less deficit — about $16,050 of average net income per return.
Read that number as a floor, not a benchmark, for three reasons.
It covers all specialty trades — electrical, roofing, and the rest — not plumbing alone.
It includes part-time and side-business filers, whose small returns drag the average down.
And it excludes S-corps and partnerships, so owners who file under those structures never appear in the figure.
The IRS data understates the full-time shop owner; it also cannot isolate them.
How many owners are we even talking about?
Of the 510,600 plumber, pipefitter, and steamfitter jobs counted in 2025 — a count that includes the self-employed — 8% were self-employed, and 65% were with plumbing, heating, and air-conditioning contractors.
Ownership is the exception in this trade, not the norm.
| Source | What it counts | What it can't tell you |
|---|---|---|
| IRS SOI, sole proprietors (tax year 2023) | All specialty-trade Schedule C filers: $257.8B receipts, $40.5B net, about $16,050 average net per return | Anything plumbing-specific; S-corps and partnerships; full-time vs side business |
| BLS wage data (OEWS May 2025) | Employees only: 465,840 wage-and-salary plumbers, pipefitters, and steamfitters, by occupation and industry | Self-employed owners — excluded entirely |
| BLS Employment Projections / OOH | Total jobs including the self-employed (510,600 plumbing jobs; 8% self-employed) | Owner earnings specifically |
We found no verified owner-income table
Revenue vs profit vs owner pay
People who ask how much a plumbing business makes are usually shown a revenue number, and that is how the big claims online get big.
Three different numbers hide behind "what the owner makes."
Revenue is everything customers pay the business — service calls, water heaters, repipes, new-construction contracts.
Profit is what remains after every cost: technician wages, trucks and fuel, insurance, parts, advertising, software.
Owner pay is how the owner takes money out — a salary the business expenses like any employee's wage, a draw from profit, or both.
The distinction matters because the impressive numbers live in different buckets.
A shop can book heavy revenue and carry thin profit once parts, payroll, and insurance are paid.
An owner paid a W-2 salary receives a set amount the business must fund like any employee's wage; an owner living on profit takes the residual after everyone else — the parts house and the insurance carrier included — has been paid.
Counting a shop's revenue as the owner's income counts money that already belongs to other people.
Business structure changes where the income shows up, too.
The IRS figures above count only sole proprietors filing Schedule C; an S-corp or partnership files a different return entirely, which is exactly why those shops are missing from the federal averages.
How you structure the business is a tax question with real dollar consequences — one to work through with an accountant, not a blog table.
Solo plumber income: the self-employed plumber
A solo plumber is one person with their own business doing the billable work themselves — no employees, one truck.
Most plumbers never sit here: 8% of plumber, pipefitter, and steamfitter jobs were self-employed in 2025.
But it is the rung every owner starts from, and it is the only ownership case where the data gives you a usable benchmark — indirectly.
The benchmark is what employers pay for the same labor.
Nationally, plumbers, pipefitters, and steamfitters earned a $63,800 median ($30.67 an hour) in May 2025, across 465,840 wage-and-salary jobs.
Those figures price employees — BLS wage data excludes self-employed owners entirely — so they are the market the solo plumber sells against, not the plumber's own income.
A solo operator's net is their billings minus the overhead an employer otherwise carries: the truck, insurance, parts, and advertising bills.
Whether that lands above or below the employee benchmark depends on the owner's price, their hours, and their costs — arithmetic on their own books, and nothing in the government data guarantees either direction.
Contracting under your own name also means meeting the contractor-licensing rules where you operate — set by states, or by cities and counties where licensing is local.
Confirm the requirement with the board that covers your area before you book work.
For the employee side in full — every percentile, every state — see the employee plumber salary data.
What drives plumbing owner income
Owner income is not a wage with a premium attached; it is the output of four variables, and only one of them is a wrench.
- Billable hours the owner still sells personally. The employee benchmarks above show what employers pay for the same labor; what the owner keeps for those hours depends on their price and their costs. An owner who wants to out-earn a plumber's wage needs income from beyond their own two hands.
- The spread on employees' work. When a shop has techs, the owner's profit is funded by the difference between what a plumber bills the customer and what the plumber costs in wages and burden — the math behind hiring a plumber. That spread is the engine of everything above the solo rung.
- Overhead discipline. Trucks, insurance, parts inventory, and advertising all come out before profit. Two shops with identical revenue can land in different places entirely on the strength of their cost control.
- Demand in the market. BLS projects plumber, pipefitter, and steamfitter employment to grow 6.8% from 2025 to 2035, against a 3.5% all-occupation average, with about 42,000 openings a year. Strong demand keeps a book of work; it does not guarantee the work is priced profitably.
Notice what the list implies: past the licence and the trade skill that get you into the game, owner income scales with business arithmetic — pricing, cost control, collections — more than with technical ability.
The trade skill is the entry fee; the income is set by how the business is run.
If you are weighing the leap itself, our guide to starting a plumbing business walks through the licence, the startup costs and the pricing decisions.
Owner vs employee: the real comparison
We found no head-to-head comparison in the federal tables we checked: the BLS wage series covers employees only, so the salary tables and owner-income figures don't sit in the same dataset.
Any "owners out-earn plumbers by X%" figure you come across is drawing on something other than the federal sources we checked.
Here is what each side of the comparison actually looks like.
The employee side is measured: a $63,800 national median in May 2025, with the middle of the occupation earning $50,190 to $85,110 and the 90th percentile at $108,420 — the top of the employee market crosses six figures.
Employees take wages without carrying the shop: no truck financing, no insurance bill, no unpaid quoting time, and the paycheck does not depend on collections.
The owner side is a different shape.
The upside is the spread on more billable labor than the owner's own two hands can produce — the main lever by which ownership out-earns a wrench.
The downside shows up in the IRS averages: once part-time and side-business filers mix in, the average sole proprietor across the specialty trades nets about $16,050 a year.
Ownership swaps a predictable wage for a variable residual, and the federal data cannot tell you where on that range a given shop lands.
If you are weighing the trade itself rather than the business, browse plumber jobs to see what employers are hiring for right now.
This page is career information, not legal, tax, or financial advice. Owner income depends on your own business's books. Confirm licensing questions with your state licensing board — or the city or county where licensing is local — and tax-structure questions with an accountant.