Should a Small Business Use a Payroll Service?

The short answer

Most small businesses with employees use a payroll service or payroll professional to run paychecks, withhold taxes, and file the required forms. But the Internal Revenue Service (IRS) says that when you outsource payroll, you’re generally still responsible for the taxes, with an exception for some customers of a Certified Professional Employer Organization (CPEO). So pick a provider carefully and check their work.

What this tells Google and AI

Payroll is a Foundation step. Search engines and AI tools never see it. But payroll tax trouble can freeze bank accounts, cause penalties, and drive staff away, and a business that can’t keep its crew can’t keep its hours, answer calls, or earn good reviews. Those are the things Google does read.

What this means

Payroll covers more than paychecks. The outline line for this page lists four jobs: processing pay, withholding taxes, keeping employee records, and filing required forms.

The IRS describes several kinds of outside help:

• Payroll service provider. Helps you file and deposit on time. You usually stay responsible.
• Reporting agent. Files returns and makes deposits for you. You authorize them with IRS Form 8655.
• Section 3504 agent. Takes over some or all federal employment tax duties. Appointed with Form 2678.
• Professional employer organization (PEO). Runs payroll and often benefits for many businesses. A PEO certified by the IRS is a CPEO. The IRS says a CPEO is generally solely liable for employment taxes on work site employees.

Say a cleaning company hires its first three employees. The owner signs up for a payroll service. Each payday, the service pays the staff, withholds taxes, and sends deposits. Once a quarter, the owner logs in to the IRS payment system and makes sure the deposits match the payroll reports.

Why it matters

• You can owe the taxes twice. The IRS says if a third party fails to pay, the employer still owes the deposits.
• Payroll mistakes hurt your team. Late or wrong pay is a fast way to lose good people.
• Deadlines are many. Federal, state, and sometimes local deposits and filings each have their own schedule (see 10.3.4 Payroll Tax Deposits).
• Fraud happens. The IRS has a form, Form 14157, for reporting a payroll provider that mishandles deposits or filings.

Who this applies to

Every business with employees. A sole proprietor with no employees doesn’t run payroll for themselves. Owners of some business structures do pay themselves through payroll, so ask your CPA (see 6.3.2 CPA or Tax Professional and 10.6.6 Owner Draws).

How to do it

1. Get your Employer Identification Number (EIN) and register with your state as an employer before the first payday (see 10.1.1 Employer Identification Number and 10.3.1 State Employer Registration).
2. Decide what kind of help you need: software you run yourself, a payroll service, a reporting agent, or a PEO.
3. Ask your CPA which providers they work with. Shared access makes year-end work easier.
4. If you’re looking at a PEO, check whether it’s certified. The IRS publishes a list of CPEOs and their effective dates.
5. Ask each provider exactly which filings and deposits they handle, federal and state.
6. Read the contract. Find out who is liable if a deposit is late or wrong. For a CPEO, the IRS says the contract should include the CPEO’s exact name and EIN.
7. Sign only the IRS authorization forms that match the arrangement you chose.
8. Enroll your business in EFTPS yourself so you can see deposits. The IRS notes that CPEO customers can’t see the CPEO’s deposits there, so ask a CPEO how you can confirm payments.
9. Each quarter, compare the provider’s reports to what the IRS and your state show.
10. Keep your payroll records for the IRS retention period, which is at least 4 years for employment tax records (see 9.8.2 Record Retention Periods).

What proof to keep

• The signed payroll provider contract
• Copies of IRS authorization forms you signed (Form 8655, Form 2678, or Form 8973)
• Quarterly and yearly payroll tax filings
• Your own EFTPS payment history, where available
• A note of each quarterly check and what you found

Keep these in your payroll folder, with limited access (see 11.7.6 Least Privilege Access).

Common mistakes

• Thinking the provider took over all liability. Unless you use a CPEO for work site employees, you usually still owe the taxes.
• Never checking deposits. Many owners find a problem only when the IRS sends a notice.
• Letting the provider’s address replace yours with the IRS. If notices go only to the provider, you may never see them. Ask how IRS letters will reach you.
• Paying workers as contractors to skip payroll. Worker classification has rules (see 23.3 Employee or Contractor).
• Choosing a provider that doesn’t handle your state. Multi-state teams need a provider that files in every state where people work.

When to get help from a pro

CPA or enrolled agent: before you pick a provider and once a year after. Ask:

• Which payroll arrangement fits my size and state, and who would be liable for missed deposits?
• How should I pay myself as an owner under my business structure?

Employment attorney: if you’re unsure whether workers are employees or contractors.

Bill’s note

[Bill: add a short story or opinion here. For example, how you decided on payroll for SiteSmarty, or what you’d tell an owner about checking deposits each quarter.]

How I did this for SiteSmarty

• [Date I did this:]
• [What I actually did, step by step: which payroll setup I chose and why]
• [What it cost and how long it took: monthly or per-payroll fee]
• [What surprised me or what I’d do differently:]
• [Screenshot or photo to add, with private info blurred: EFTPS payment history next to the provider’s deposit report]
• [Result so far:]

Questions people ask

If I use a payroll company, am I still responsible for payroll taxes? Usually, yes. The IRS says employers stay responsible for employment taxes when they outsource, except for some arrangements with a CPEO.

What is a CPEO? A professional employer organization that the IRS has certified. For work site employees, a CPEO is generally solely liable for federal employment taxes.

How do I check that my payroll company is paying my taxes? Enroll in EFTPS and compare its payment history to your provider’s reports each quarter. Check your state tax account the same way.

Do I need payroll if I’m the only person in the business? It depends on your business structure. Ask your CPA.

Audit check

• Question: Is payroll handled by a provider whose role, liability, and deposits the owner has confirmed in writing and checks each quarter?
• Pass looks like: A signed contract that names who files and who is liable. IRS authorization forms that match the setup. A CPEO confirmed on the IRS list, if used. Quarterly deposit checks on record.
• Fail looks like: No contract. The owner assumes the provider is liable. No one has checked deposits. IRS notices going only to the provider.
• Evidence to collect: The contract, signed IRS forms, the last 4 quarterly filings, and EFTPS or state account screenshots.

Where this fits

Do this first: 6.3.4 Insurance Professional, 6.3.2 CPA or Tax Professional

Do this next: 6.3.6 Industry Adviser

Related pages: 10.1.1 Employer Identification Number, 10.3.1 State Employer Registration, 10.3.2 State Withholding, 10.3.4 Payroll Tax Deposits, 10.3.6 New-Hire Reporting

Sources

• Internal Revenue Service, "Outsourcing payroll and third-party payers" (checked October 16, 2026)
• Internal Revenue Service, "CPEO customers: What you need to know" (checked October 16, 2026)
• Internal Revenue Service, "CPEO public listings" (checked October 16, 2026)
• Internal Revenue Service, "How long should I keep records?" (checked October 16, 2026)

This page explains general rules and Bill's own experience. It is not legal, tax, or insurance advice. Talk to a qualified professional about your situation.