What Drives Outsourced Payroll Cost?

Every payroll provider is answering the same question when it builds a quote: how much work and how much responsibility will your payroll take each pay period? The answer comes from a handful of factors you can see in your own business today:

1. How many people you pay
2. How often you run payroll
3. How many states and local tax jurisdictions you pay in
4. How many benefits, deductions and garnishments run through payroll
5. Which filings and reports the provider owns
6. Whether your records need cleanup before anyone can run a clean payroll
7. How payroll connects to your accounting and time tracking
8. Whether you get a tool you run yourself or a team that runs it for you

If you know these eight things, you can get comparable quotes and spot what one provider includes that another leaves out. If you want a payroll team to run the process end to end, start with our payroll processing service.

Headcount is the biggest single driver. Each employee and contractor adds a profile to maintain, a paycheck or payment to calculate, a pay stub, year-end forms and questions to answer. Most providers scale their charge with the number of people paid, so it helps to count active employees and contractors separately before you ask for quotes.

Pay frequency multiplies that work. Paying weekly usually means 52 payroll runs a year; biweekly is usually 26, semimonthly is 24 and monthly is 12. Each run has its own review, approval, funding and tax deposits. Off-cycle runs, such as a bonus check, a final paycheck or a correction, usually count as extra work too. Before you change frequency to save on payroll costs, check your state's pay frequency rules with your state labor agency.

Every state where you have employees can mean another withholding account, another unemployment insurance account, its own rates and its own filing calendar. Some cities, counties and school districts add local income or payroll taxes on top. A business with everyone in one state is simpler to run than one with a few remote employees spread across several.

A new state also means registration: you need the state accounts open before the first paycheck in that state. Ask whether a provider registers those accounts for you or expects you to do it. Our state payroll tax registration guides show what each state requires.

Health insurance premiums, retirement plan contributions, HSA and FSA deductions, union dues, wage garnishments and child support orders all run through payroll. Each one needs to be set up correctly, deducted in the right order and paid to the right place on time. Garnishments and support orders carry legal deadlines and notices, so they take more care than a standard deduction.

A provider that only calculates paychecks may leave the remittances and paperwork with you. A provider that handles them end to end takes on more work, which shows up in the quote.

Scope is where quotes differ the most, so read what is included line by line. The work that sits around a paycheck often matters more than the paycheck itself:

• Tax deposits and quarterly returns. Federal deposits on the IRS schedule, Form 941 each quarter, Form 940 each year, plus state withholding and unemployment returns.
• Year-end forms. W-2s for employees, sent to workers and filed with the Social Security Administration by January 31 , and Form 1099-NEC for contractors, sent to them and filed with the IRS by January 31.
• New-hire reporting. Federal law requires employers to report new hires to the state, generally within 20 days of hire.
• Notices and corrections. Answering tax agency notices, amending returns and fixing a missed deposit.
• Employee questions. Who answers when someone asks why their check looks different?

When a provider files on your behalf, ask who is responsible if a filing is late or wrong. See how we handle tax filing and compliance, and what we cover across our services.

If payroll has been run inconsistently, the first job is getting it right before anyone runs it forward. Common cleanup work includes missed or late tax deposits, unfiled quarterly returns, year-to-date totals that don't match what was filed, employees set up in the wrong state and unopened state accounts. Cleanup is usually scoped as its own project, because the size depends on how many quarters and states need to be fixed.

If payroll is already late or your payroll person just left, that is a different situation. See emergency payroll support.

Payroll has to land in your books. Some setups sync payroll journal entries to your accounting system and pull hours from your time tracking app automatically. Others need someone to export, map accounts and reconcile each run by hand. Ask how payroll will connect to your bookkeeping, who maps the accounts, and who reconciles payroll liabilities each month. Manual handoffs cost staff time even when they don't show up on an invoice.

The model you choose changes both what you pay and what you still do yourself.

An app usually costs less on paper but leaves the work and the risk with you. A payroll team costs more on paper and takes the work off your desk. A PEO bundles more services and changes the employer relationship. Our PayAdvisors vs PEO page compares the last two.

Most quotes combine some of these parts: a base charge per pay period or per month, a charge per person paid, one-time setup or onboarding, separate charges for year-end forms, extra states or off-cycle runs, and, for PEOs, a charge tied to headcount or payroll size. Two quotes can look close at the top line and be far apart once you add the extras you will actually use. Ask each provider for an all-in quote based on your real headcount, pay frequency and states.

The provider's charge is only part of the picture. A fair comparison adds up:

• Staff time. Hours spent each pay period on data entry, review, deposits, filings and questions.
• Errors and penalties. Late deposits and late or wrong returns can trigger IRS and state penalties and interest.
• Coverage. What happens when your payroll person is out sick, on vacation or leaves?
• Tools. The payroll app, time tracking and any add-ons you pay for separately.
• Owner attention. Time you spend on payroll instead of running the business.

For the full side-by-side, read hire vs outsource payroll. If you run a single-owner S Corp, our post on S Corp payroll cost walks through that case.

1. Is the quote all-in for my headcount, pay frequency and states?
2. Which filings do you submit, and who is responsible if one is late or wrong?
3. Are W-2s, 1099-NEC forms and amended returns included?
4. Do you register new state accounts, or do I?
5. How are off-cycle runs, garnishments and benefit deductions handled?
6. Who is my contact, and how fast do you answer employee questions?
7. Is there a setup or onboarding charge, and what does it cover?
8. What does it take to leave, and do I get my records?