How to start a plumbing business in the US

Starting a plumbing business takes a license, a business structure, insurance and a way to win work. Work through this list in order:

1. 1A license: most states require plumbers to be licensed, usually after an apprenticeship, years of experience and an exam.
2. 2A business structure: sole proprietorship or LLC.
3. 3Registrations: an EIN from the IRS, a DBA if you trade under a business name, and any state and local business licenses.
4. 4Taxes: a plan for self-employment tax and quarterly estimated payments.
5. 5Insurance: general liability, commercial auto for your truck or van, tools cover, and workers' comp once you hire.
6. 6Prices: an hourly rate, a service call fee and flat-rate prices built from your costs.
7. 7A way to win work and answer every call, even when you're under a sink.

Each step is covered below. None of it is hard, but skipping one, especially the license or insurance, can end a new business quickly.

In most of the US, yes. The Bureau of Labor Statistics says most states and some localities require plumbers to be licensed. There's no national plumbing license: each state sets its own license types, exams and fees, and some cities add their own rules on top.

Texas is a good example of how a state system works. The Texas State Board of Plumbing Examiners is the state agency responsible for licensing plumbers in Texas. It issues four plumbing licenses (Tradesman Plumber-Limited, Journeyman Plumber, Master Plumber and Plumbing Inspector) plus a Plumber's Apprentice registration. To get a license you must meet the eligibility rules, pass an exam and pay a fee, licenses renew every year, and every licensee needs six hours of continuing professional education to renew.

Other states use different titles and steps, and some license plumbing contractors separately from individual plumbers. Before you trade, check three things with your state licensing board and your city: which license lets you run your own jobs, whether the business itself needs a contractor license, and whether you need permits and inspections for the work you'll do.

The usual route takes 4 to 5 years. The BLS says most plumbers learn their trade through a 4- or 5-year apprenticeship, with about 2,000 hours of paid on-the-job training each year plus classroom time. It adds that states and localities often require 2 to 5 years of experience and a passed exam before a plumber can work independently.

Many states use a ladder like this one, though the names and hours differ:

• Apprentice: you work under a licensed plumber and register with the state where that's required.
• Journeyman: after the required hours and an exam, you can work without direct supervision.
• Master or contractor: often the level that lets you pull permits and run your own plumbing business, after more experience and another exam.

The pay is worth the wait. The BLS puts the median pay for plumbers, pipefitters and steamfitters at $63,800 a year in 2025. If you're licensed but new to running jobs alone, a year working for an established shop teaches you pricing, customers and paperwork before your own name is on the truck.

Most people starting out as a plumber begin as a sole proprietor, because it's the simplest structure there is. The SBA says you're automatically considered a sole proprietorship if you do business without registering as any other kind of business. The catch: your business assets and liabilities aren't separate from your personal ones, so you can be held personally liable for the debts and obligations of the business.

A limited liability company (LLC) is formed with your state. The SBA says LLCs protect you from personal liability in most instances, so your vehicle, house and savings aren't at risk if the LLC faces bankruptcy or a lawsuit. It calls an LLC a good choice for medium- or higher-risk businesses and owners with significant personal assets. Filing fees and annual reports are set by each state, so check your secretary of state's website for the current cost.

Plenty of trades start as sole proprietors and move to an LLC once they hire, buy equipment or take on bigger jobs. Talk to an accountant or attorney in your state before you switch, because the tax treatment can change.

Registering a new business in the US usually takes four steps: a business name, a tax ID, state registration if you form an entity, and any state and local licenses your trade needs. The SBA says a doing business as (DBA) name might be legally required if you trade under a name other than your own, and that requirements and fees for licenses and permits vary based on your business activities, location, and government rules.

1. 1Get an EIN. The IRS says you can get an EIN directly from the IRS in minutes for free, and warns against websites that charge for one. A sole proprietor without employees can use a Social Security number, but an EIN keeps that number off your invoices and paperwork.
2. 2Register a DBA with your county or state if you'll trade under a business name rather than your own name.
3. 3Get any state license your trade needs, and a business license or permit from your city or county.
4. 4Open a separate business bank account and keep every receipt, invoice and mileage note from day one.

Then plan for federal tax. The IRS says you must pay self-employment tax if your net earnings from self-employment are $400 or more, at a rate of 15.3% (12.4% for Social Security and 2.9% for Medicare). Nobody withholds tax from your pay, so the IRS expects sole proprietors to make estimated tax payments if they expect to owe $1,000 or more when they file. Set aside part of every payment so the quarterly bill isn't a shock. Most states have their own income tax and sales tax rules on top.

General liability matters most, and Insureon puts it at $147 a month, or $1,768 a year, for plumbing businesses, based on the median premium of plumbing contractors who get quotes through it. The main covers are:

• General liability insurance: pays out if you damage a customer's property or injure someone. A flood from a failed joint can cost thousands, and many general contractors and property managers won't use you without proof of cover.
• Commercial auto insurance: Insureon says most states require this cover for vehicles owned by a business. Its median for plumbers is $285 a month, or $3,415 a year.
• Tools and equipment cover (inland marine): plumbing kit is expensive and work vans are a target. Insureon's figure for contractors is $42 a month.
• Workers' compensation insurance: the SBA says laws requiring insurance vary by state, and businesses with employees need workers' comp. Insureon's median for plumbers is $179 a month, or $2,150 a year.

These are medians from one broker's customers, not a quote. Your price depends on your state, your claims history, your payroll and the limits you choose, so get quotes with your own details.

Insurance alone starts at about $1,768 a year for general liability, and the truck or van is usually the biggest single cost. These are published figures, checked on 9 November 2026:

Sources: Insureon plumbing insurance costs, IRS EIN page and the SBA's guide to choosing a business structure.

Example only: a sole proprietor with no employees buying general liability and commercial auto at the medians above would spend $5,183 a year on insurance, before the vehicle, tools, stock and license fees. Many new plumbers start with a truck they already own, which brings the up-front cost down a long way.

Build your rate from a year of costs, the pay you want and the hours you can actually bill, then check it against the market. New plumbers often price low to win work, then find they're busy but not earning.

Our guide on what to charge as a plumber walks through the sum with a worked example, service call fees, flat-rate pricing and emergency rates. Set an after-hours rate before the first 10pm call, not during it. Our guide to after-hours plumbing calls covers how.

Your first customers usually come from people who already know you, then from Google. In order:

1. 1Tell everyone you know, and the general contractors, remodelers and property managers you've worked with, that you're taking on work.
2. 2Set up a free Google Business Profile. Google says businesses with complete and accurate info are more likely to show up in local search results. If customers don't visit you, set it up as a service-area business with a designated service area rather than showing a home address.
3. 3Ask every happy customer for a Google review right after the job. Our guide on how plumbers can get more Google reviews has the review link and what the rules ban.
4. 4Talk to property managers and landlords. Rental homes need repairs all year, and managers want one plumber who shows up and sends photos and invoices promptly.
5. 5Put your business name and phone number on the truck, plus your license number if your state or city asks for it on vehicles and ads. It's a cheap ad that works every day you're parked outside a job.

Google Local Services Ads, Angi, Thumbtack, Yelp and Nextdoor can fill gaps in a quiet first month. With Local Services Ads you pay only for leads related to your business, but Google warns that if you regularly fail to answer calls, your ad ranking may be affected. Judge every lead source by the cost of each job you win. Our guide on how to get more plumbing jobs compares them.

When you work alone, almost every call comes in while you're on a job, driving or with a customer. In a September 2025 CallRail survey, 82% of US consumers said they'd call a competitor if a business didn't answer, and only 42% said they'd leave a voicemail. A new plumber doesn't have a name yet, so a missed first call is often a customer you never hear from again.

You have a few options:

• Voicemail. It's free, but most callers won't leave a message and will call the next number on the list.
• Calling back between jobs. It works when you're quiet, and falls apart in a busy week.
• A family member or a part-time receptionist. Reliable, but it costs wages and only covers set hours.
• An answering service or an AI receptionist that answers in your business name and sends you the details.

Put your own numbers into our missed call calculator to see what missed calls could cost each week. If you'd like a receptionist that takes the call for you, see how Ringzel works as an AI receptionist for plumbers. For calls at night and on weekends, see our guide to after-hours plumbing calls.

Growth for a plumbing business usually means one of three things: better-paid work, repeat customers or more pairs of hands. Before you hire, check you're getting the most from the hours you already work. Raise prices if you win nearly every quote, keep a list of past customers for water heater and maintenance reminders, and build work that repeats, such as property management accounts. An apprentice is a common first hire, because your state's license route usually requires apprentices to work under a licensed plumber anyway.

Taking on your first employee changes your legal duties. Before the first payday:

1. 1Get the right forms. The IRS says every new employee fills in a Form W-4 so you can withhold federal income tax, and that all U.S. employers must properly complete Form I-9 for every individual they hire to verify identity and the right to work.
2. 2Use your EIN for payroll, withhold income tax, Social Security and Medicare, and file the employer returns that come with it. Many small firms use a payroll service from the first hire.
3. 3Get workers' compensation insurance. The SBA lists workers' compensation, unemployment and disability insurance among the cover businesses with employees must carry, and says laws requiring insurance vary by state, so check your state's rules before the first day.
4. 4Pay at least the minimum wage. The Department of Labor says the federal minimum wage is $7.25 per hour, and that where state laws give employees more protection, employers must comply with both. Many states set a higher rate.

Ringzel is an AI receptionist for plumbers and other small businesses. You keep your number and forward the calls you can't take. It answers every call 24/7 in your business name and asks your questions, such as the address, what's leaking and whether the water is off, then sends you the details so you can call back the jobs worth having. Our guide on why every call gets checked explains what happens after each call.

On the Professional and Premium plans it can book jobs into your calendar and transfer calls to you or your team. The Android app is live on Google Play, and the iPhone app is coming soon.

Plans cost $99, $179 or $299 a month, or $990, $1,790 or $2,990 a year, as shown on our pricing page. Every plan starts with a 14-day free trial, with no card to start.