Plumber Permits & Licenses in Des Moines, IA

Not a license but mandatory registration for tax and compliance purposes

Required for all LLCs. Online filing available via Fast Track Filing. Annual report required separately.

Applies to all domestic LLCs. Failure to file leads to inactive status.

Business entity must hold the license. Requires a Responsible Managing Employee (RME) who is a licensed master plumber. Exam administered by PSI Exams.

Prerequisites: 5 years journey-level experience OR 4-year degree + 2 years experience + exam. Required for LLC's designated RME. Board rules at https://dial.iowa.gov/rules.

Prerequisites: 4 years experience under master plumber + exam. Required for employees doing hands-on plumbing work (not just the business owner).

Required if business uses trade name/DBA. File central certificate with SOS.

Plumbing services generally not subject to sales tax, but materials are. Register online via GovConnectIowa. Applies if employees (withholding) or taxable purchases.

Plumbers in Iowa may be required to collect sales tax on parts and fixtures used in service. Labor for repairs is generally not taxable unless combined with sale of tangible personal property. See Iowa Admin. Code r. 701—3.3(2).

Required for all employers paying wages to employees in Iowa. Includes filing Form IA 99W to register. Employers must withhold state income tax from employee wages.

Employers must register using the UI Employer Registration form. New employers are assigned a rate of 2.0% for the first few years. Rate adjusts based on claims history.

Applies to all businesses earning income in Iowa. LLCs taxed as pass-through entities are not subject to corporate income tax; instead, owners report income on personal returns. If the LLC elects corporate taxation, Form IA 1120 must be filed annually.

LLCs are typically pass-through entities. Owners report business income on personal Iowa returns (Form IA 1040). No entity-level tax unless electing otherwise. This is an ongoing filing obligation for income reporting.

Required for LLCs with employees or multiple members. Can be obtained online at IRS.gov. Even single-member LLCs may need EIN for banking or contractor purposes.

Multi-member LLCs file Form 1065 (informational). Profits flow to members’ personal returns. Single-member LLCs report on Schedule C of Form 1040. Applies to all LLCs regardless of industry.

Plumbers operating as sole proprietors or single-member LLCs must pay self-employment tax using Schedule SE. Estimated taxes required if tax liability exceeds $1,000.

Many Iowa jurisdictions add local option sales tax (up to 1% in some areas). Registration is handled through the state system. No separate local registration required.

Not statewide; depends on municipality. For example, Des Moines requires a Business License Tax registration. Check individual city websites for requirements. Often includes annual renewal.

Iowa does not impose a franchise tax or gross receipts tax on businesses. This obligation does not exist for plumbers or other LLCs in Iowa.

No federal excise tax applies to standard plumbing services. Excise taxes apply to specific industries (e.g., fuel, transportation, telecommunications), not residential or commercial plumbing in Iowa.

No industry-specific taxes (e.g., environmental, licensing fees beyond standard) apply to plumbers in Iowa beyond standard sales, income, and employment taxes.

Required for all businesses; plumbers must also comply with state licensing

FLSA requires payment of federal minimum wage ($7.25/hour as of 2024) and overtime (1.5x regular rate for hours over 40/week). Applies to plumbing employees, including service technicians. Independent contractor status must be properly classified under DOL guidelines.

Requires eligible employers to provide up to 12 weeks of unpaid, job-protected leave for qualifying medical and family reasons. Most small plumbing LLCs will not meet the 50-employee threshold, but must monitor if growth triggers compliance.

Required for LLCs that hire independent contractors (e.g., subcontractor plumbers). Must issue Form 1099-NEC to each contractor paid $600+ and file with IRS. Does not apply to corporations (but does apply to sole proprietors and LLCs taxed as such).

There is no federal licensing requirement for plumbers. Licensing is handled at the state or local level. This business must comply with Iowa-specific licensing (not federal). Federal agencies like DOT, FDA, ATF, FCC do not regulate plumbing services.

Plumbing businesses typically allowed in commercial/industrial zones; home-based may need special use permit

Limited to low-impact activities; no on-site storage of plumbing materials/vehicles allowed

Plumbing business shop fit-outs require review for plumbing code compliance

All Iowa LLCs must file an annual report by April 1 each year to remain in good standing. The report updates business information such as principal address, registered agent, and management structure.

Plumbers must renew their license every two years. Licensees are required to complete 6 hours of board-approved continuing education prior to each renewal. Renewal occurs in the licensee’s birth month.

Licensees must complete 6 hours of Iowa-approved continuing education every two years, including at least 1 hour on Iowa plumbing code updates. Courses must be from board-approved providers.

Employers must register for withholding tax, file periodic returns (Form 990), and submit withheld income taxes. Frequency (monthly/quarterly) is determined by the department based on payroll volume. Form W-2 must be filed annually by January 31.

Plumbing businesses that sell tangible personal property must register for sales tax. Filing frequency is assigned by the Department of Revenue. Returns are due on the 20th of the month following the reporting period.

LLCs with employees must file Form 941 quarterly and Form 940 annually. Form W-2 must be filed for each employee by January 31. EIN is required for tax reporting.

LLC owners must make quarterly estimated tax payments using Form 1040-ES if they expect to owe $1,000 or more in federal taxes after subtracting withholding and credits.

Self-employed individuals in Iowa must make quarterly estimated tax payments if they expect to owe $500 or more in state tax. Payments are due on the same schedule as federal estimates.

All Iowa employers with one or more employees must carry workers’ compensation insurance. Coverage must be continuous. Independent contractors are not covered.

Master plumbers and plumbing contractors must display their valid Iowa plumbing license at their principal place of business and on all vehicles used in business operations.

Employers must display current federal (e.g., Fair Labor Standards Act, OSHA) and Iowa labor law posters in a conspicuous location accessible to employees. Posters must be updated as laws change.

Plumbing contractors must maintain general liability insurance ($300,000 minimum) and file a $10,000 surety bond with the state. Proof required at initial licensing and renewal.

Tax-related records (e.g., receipts, invoices, bank statements) must be kept for at least 3 years. Employment tax records must be kept for 4 years. Business owners should retain records for 7 years to cover audit periods.

Iowa LLCs taxed as corporations must file Form IA 1120 annually. Due date is April 30. An automatic extension to October 31 is granted if no payment is due, or if estimated tax is paid by April 30.

LLCs taxed as S-corporations or partnerships must file Form 1120-S or Form 1065 by March 15. An extension to September 15 is available via Form 7004.

Single-member LLCs report income on the owner’s personal Form 1040 using Schedule C. Due April 15. Automatic extension to October 15 with Form 4868.

Size and illumination restrictions per zoning district

Plumbing shops classified as mercantile/storage; hazardous materials review if storing chemicals

Required for all commercial alarms

No specific permit; enforced via complaints; time/volume limits apply

Iowa law requires all employers with one or more employees to carry workers' compensation insurance. Sole proprietors and partners in an LLC are not required to cover themselves unless they elect to do so. Corporate officers may qualify for exemption if they own at least 25% of stock and file a waiver.

General liability insurance is not mandated by Iowa state law but is strongly recommended and often required by commercial landlords, clients, or general contractors. It protects against third-party bodily injury, property damage, and advertising injury claims.

Professional liability insurance is not legally required for plumbers in Iowa but is recommended for protection against claims of negligence, faulty workmanship, or design errors. May be required by contract with commercial clients.

A $10,000 surety bond is required for all plumbing contractors applying for a state license in Iowa. This bond protects consumers from fraudulent or substandard work and ensures compliance with Iowa Code Chapter 544B. The bond must be issued by a surety company licensed in Iowa.

Iowa law requires all motor vehicles registered in the state to carry liability insurance with minimum limits of $25,000 for bodily injury per person, $50,000 per accident, and $10,000 for property damage (25/50/10). This applies to any vehicle used for business purposes, including plumbing service vans.

Product liability insurance is not required by Iowa law. However, if a plumbing business sells or installs defective products (e.g., water heaters, fixtures), it could be held liable. Coverage is typically included in broader general liability policies but may need to be verified.

Liquor liability insurance is not required for plumbing businesses unless they host events where alcohol is served or sold. This is not typical for plumbers in Iowa and does not apply to standard operations.

While not insurance, the license requires proof of liability insurance (general liability) and a surety bond. The Iowa Plumbing License mandates that all plumbing contractors obtain a state license if the job exceeds $1,000. This includes LLCs. The license requires a $10,000 bond and proof of insurance.

Required for all LLCs, regardless of whether they have employees. Sole proprietorships without employees may use the owner's SSN, but an LLC must have an EIN. This is mandatory for tax administration.

A single-member LLC is disregarded for federal tax purposes and reports income on Schedule C of Form 1040. Multi-member LLCs file Form 1065. All members pay self-employment tax on distributive share of profits. Plumbing income is subject to self-employment tax.

Federal OSHA covers all private-sector employers with employees. Plumbers must comply with general industry standards including hazard communication, electrical safety, and personal protective equipment (PPE). No requirement if sole owner with no employees.

Applies to all businesses serving the public. While most plumbing services are mobile, if the business has a physical office, retail space, or website offering services, it must be accessible under Title III of the ADA. Website must be usable by people with disabilities.

Required under the Toxic Substances Control Act (TSCA) Section 402. Applies to any firm doing renovation work (including plumbing) that may disturb lead-based paint. The business must be EPA-certified, pay the fee, and ensure at least one Certified Renovator is on staff. Iowa does not have an authorized state program, so federal EPA rules apply directly.

All businesses must avoid deceptive or misleading advertising. Plumbers must truthfully represent services, pricing, licensing, and response times. Applies to websites, social media, and phone scripts. FTC enforces against false claims like “licensed by federal government” or “immediate 24/7 service” if untrue.

Required for all U.S. employers. Employers must verify identity and work authorization for all employees using Form I-9. Must be retained for 3 years after hire or 1 year after employment ends, whichever is later. Applies to LLCs with employees.