Can I legally run payroll myself without a service?

Yes — payroll is a business function, not a licensed service. You can calculate withholdings manually, file 941s, and remit tax deposits yourself. The risk is execution: payroll tax deposit deadlines are strict (often next-day or semi-weekly based on your deposit schedule), and the IRS Trust Fund Recovery Penalty for unpaid payroll taxes is one of the most aggressive personal-liability rules in tax law. For most businesses with employees, the $6/employee/month cost of a service is inexpensive insurance against that exposure.

When does misclassifying contractors as employees become a problem?

Immediately, retrospectively. The IRS and state agencies apply multi-factor tests to determine whether a worker is an employee (W-2) or independent contractor (1099-NEC). Misclassifying employees as contractors means unpaid FICA taxes, unemployment taxes, and potentially years of back-pay exposure. States like California (AB5) apply especially stringent standards. If a worker does core business work on your schedule, with your equipment, under your direction, they're likely an employee regardless of what your contract says.

How often should I compare payroll providers?

Once per year, coinciding with open enrollment season if you offer benefits. Pricing in the payroll software market changes frequently — providers regularly adjust base fees, run promotions for new customers, and add or remove features. The switching cost (migrating year-to-date payroll records and tax forms) is real but manageable in the first half of the year. Loyalty to a provider that has raised rates repeatedly is rarely rewarded.

How Much Does Payroll Processing Cost in 2026?

Payroll processing costs $30-$100+ per employee per month. Gusto and OnPay are at the low end; ADP and Paychex at mid-tier; full HR bundles at the high end.

What’s included in payroll processing cost

Payroll services handle more than cutting checks. A standard payroll processing subscription covers: payroll calculation (gross pay, federal and state withholdings, FICA, deductions), direct deposit to employee bank accounts, automated federal and state tax deposits on the correct schedule, quarterly 941 filing, annual W-2 preparation and delivery, and new-hire reporting to state agencies.

Most platforms also include an employee-facing portal where workers can view pay stubs, download W-2s, and update their own direct deposit or W-4 information — reducing the owner’s administrative burden.

What’s excluded from most base plans: benefits administration (health insurance, 401k deductions require integration or a higher tier), time tracking, state-specific compliance posters and HR forms, and handling contractors alongside employees (1099 management is usually a separate module).

When you’ll pay more than average

The $60/employee/month midpoint covers a straightforward single-state payroll on a mid-tier plan (Gusto Plus or equivalent) with biweekly pay and no add-on modules. You’ll pay more in several situations.

Full-service HR platforms price like enterprise software. Rippling, Justworks, and Deel bundle payroll with benefits administration, compliance management, device management, and HR workflows. The per-employee cost of $80–$200/month is justified when you’re actively managing benefits enrollment, international contractors, or compliance complexity — and not justified when you need payroll and nothing else.

Multi-state workforces trigger surcharges everywhere. Each state where you have employees has its own unemployment tax (SUTA) rate, withholding rules, and deposit schedule. Providers have to maintain all of that compliance infrastructure per state and pass some of the cost along. Ten employees across five states costs meaningfully more than ten employees in one state.

Benefits integration has its own pricing layer. If you’re offering group health insurance, the broker or PEO arrangement that administers the plan may charge $15–$50/employee/month for administration on top of the payroll platform’s fee.

How software changes the math

The payroll software market has compressed dramatically over the past decade. Gusto launched in 2012 offering what ADP charged 5x as much to deliver, and the incumbents have had to respond. Today, a 5-person company pays less for full-service payroll than a comparable business paid in 2010 for a basic payroll run — in real dollars.

The practical result: there’s no longer a cost argument for running payroll manually if you have employees. The IRS penalty risk for a missed deposit deadline ($15–$100 per employee per quarter in Trust Fund Recovery exposure at the personal level) dwarfs the $6/employee/month subscription cost. The software also handles multi-state tax tables, which change every year and are genuinely error-prone to maintain manually.

When you’ll pay less

A solo owner who is the only employee — drawing a salary as an S-corp shareholder — can run payroll on Square Payroll for $35/month base plus $5/employee ($40 total) with adequate functionality. For a single-employee operation, this is the floor among legitimate platforms.

Pre-payroll businesses — sole proprietors with no employees and no S-corp election, paying themselves via owner’s draw — don’t need payroll software at all. The need for payroll processing arises specifically when you have W-2 employees or when you’ve elected S-corp status and must take a reasonable salary as the owner.

This page is informational and is not tax or payroll advice. Consult a licensed CPA or payroll professional for advice on your specific situation.