What can plumbers deduct on taxes?

Self-employed plumbers can deduct tools and equipment (often fully via Section 179), work van costs (70¢/mile or actual expenses), license renewals and continuing education, liability insurance and bonding, job materials, work clothing/PPE, and business phone and software.

Do self-employed plumbers pay self-employment tax?

Yes. Plumbers who own their business or work as 1099 contractors pay the full 15.3% self-employment tax on net profit plus income tax. Half of the SE tax is deductible as an adjustment to income.

Can plumbers deduct their work van?

Yes. You can deduct business use of a work van using the standard mileage rate (70¢/mile for 2025) or actual expenses like fuel, repairs, insurance and depreciation. Keep a mileage log and exclude any personal use.

How much should a plumber set aside for taxes?

Around 25-30% of net income after deductions is a sensible target depending on your bracket and state. Make quarterly estimated payments since no employer withholds taxes on your 1099 income.

Self-Employment Tax Calculator for Plumbers (2025)

How much tax does a self-employed plumber pay? A plumber earning $105,000 with about $32,000 in business expenses owes roughly $16,689 in total federal tax for 2025 — a 15.3% self-employment tax plus federal income tax — or about $4,172 per quarter. A common rule of thumb is to set aside 25–30% of net income for taxes. Use the calculator below for your own numbers and state.

Self-employed plumbers owe the full 15.3% self-employment tax plus income tax on net profit. This calculator estimates your bill and highlights the plumbing-trade deductions that reduce it.

Annual gross income (before expenses)

Total business expenses (incl. deductions below)

State

This tool provides estimates for educational purposes only and is not tax advice. Tax rules change; figures are based on 2025 federal rules. Consult a tax professional for your specific situation.

Deductions Plumbers often miss

Self-employed plumbers commonly gross $75,000-$160,000+ per year. You pay 15.3% SE tax on net profit plus income tax with no withholding — set aside roughly 25-30% and pay quarterly estimated taxes.

Tools & equipment (Section 179): Pipe wrenches, augers/snakes, drain cameras, pumps and power tools are deductible; qualifying purchases can be fully expensed the first year under Section 179.
Work van & mileage: Deduct business driving between jobs and supply houses at 70¢/mile (2025) or use actual vehicle expenses. Van outfitting and shelving are also deductible.
Licenses & continuing education: Journeyman/master plumber license renewals, backflow certification and required continuing education are deductible.
Liability insurance & bonding: General liability premiums, tool insurance and license/permit bonds are deductible business expenses.
Materials & job supplies: Pipe, fittings, fixtures, solder and consumables bought for jobs are deductible (typically as job/material costs).

Common tax mistakes for plumbers

Not logging mileage between service calls and supply runs.
Depreciating tools slowly instead of expensing them with Section 179 the first year.
Skipping quarterly estimated taxes and facing underpayment penalties.
Mixing personal and business accounts, making deductions hard to prove in an audit.

How self-employment tax works

As a self-employed plumber, you pay a 15.3% self-employment tax (12.4% Social Security + 2.9% Medicare) on 92.35% of your net profit, plus federal and state income tax. A common rule of thumb is to set aside 25–30% of your net income for taxes.

Quarterly estimated tax deadlines (2025)

If you expect to owe $1,000 or more, the IRS requires quarterly estimated payments. For 2025 income the deadlines are: April 15, 2025; June 16, 2025; September 15, 2025; and January 15, 2026. Missing them can trigger underpayment penalties. The calculator above estimates your quarterly amount.

Frequently asked questions

What can plumbers deduct on taxes?: Self-employed plumbers can deduct tools and equipment (often fully via Section 179), work van costs (70¢/mile or actual expenses), license renewals and continuing education, liability insurance and bonding, job materials, work clothing/PPE, and business phone and software.
Do self-employed plumbers pay self-employment tax?: Yes. Plumbers who own their business or work as 1099 contractors pay the full 15.3% self-employment tax on net profit plus income tax. Half of the SE tax is deductible as an adjustment to income.
Can plumbers deduct their work van?: Yes. You can deduct business use of a work van using the standard mileage rate (70¢/mile for 2025) or actual expenses like fuel, repairs, insurance and depreciation. Keep a mileage log and exclude any personal use.
How much should a plumber set aside for taxes?: Around 25-30% of net income after deductions is a sensible target depending on your bracket and state. Make quarterly estimated payments since no employer withholds taxes on your 1099 income.