Hiring your first employee is a milestone, and very exciting! But it also quietly makes you a tax collector for the government. The moment someone is on your payroll, you’re responsible for withholding their taxes, matching part of them, and sending everything to the right agencies on a strict calendar. This guide explains how to set up a payroll system for your first employee, so you stay compliant, pay on time, and avoid the penalties that catch unprepared owners.

The good news: what used to require an accountant and a lot of paperwork is now mostly handled by affordable software. The part you still own is understanding what’s happening, so let’s walk through it.

Step 1: Get your federal and state numbers in order

Before anyone gets paid, you need an Employer Identification Number (EIN) from the IRS. It’s free, takes minutes online, and you should never pay a third party for it. That EIN is what you’ll use to report and deposit federal payroll taxes.

Then register as an employer with your state—usually with both the tax department (for state income tax withholding) and the labor or unemployment agency (for state unemployment insurance). Requirements vary by state, so check your specific state’s employer registration page. Skipping this step is a common and avoidable mistake.

Step 2: Collect the right onboarding forms

Every new employee needs to complete a few documents before their first check. Get these into a file and keep them:

• Form W-4 — tells you how much federal income tax to withhold.
• Form I-9 — verifies the employee is legally authorized to work.
• State withholding form — the state equivalent of the W-4, where applicable.
• Direct deposit authorization — bank details for paying them.
• Any benefits enrollment paperwork — if you offer health insurance, retirement, or similar.

Missing or incomplete forms—especially the I-9—are exactly what audits look for, so treat this step as non-negotiable, not paperwork to circle back on.

Step 3: Understand what an employee really costs

Here’s what surprises first-time employers: salary isn’t the total cost. On top of gross wages, you owe the employer share of payroll taxes. For 2026, that’s 6.2% for Social Security (on wages up to the $184,500 wage base) plus 1.45% for Medicare with no cap—7.65% total—according to payroll tax guidance for 2026.

You also owe federal unemployment tax (FUTA)—6% on the first $7,000 of wages —but most employers who pay state unemployment on time get a credit that drops the effective rate to about 0.6%, or about $42 per employee per year. Add state unemployment on top, which varies widely. A practical rule: budget an extra 10–15% above salary to cover employer taxes and basic overhead before you even get to benefits.

“New employers think the number they negotiated is the number they’ll pay. The employer-side taxes are real, they’re mandatory, and they need to be in the hiring budget from the start.”

Step 4: Choose how you’ll actually run payroll

You have three realistic options. Running payroll by hand is possible but genuinely risky—the tax calculations and deposit deadlines leave little room for error. Hiring an accountant or bookkeeper works well if you already use one. For most first-time employers, though, payroll software is the sweet spot: services in the $40–$50/month range calculate withholding, file your federal and state returns, handle deposits, and produce year-end W-2s automatically.

Since a single late or incorrect federal deposit can trigger penalties that dwarf a year of software fees, this isn’t the place to save $500. Let the software own the deadlines.

Step 5: Set your schedule and respect the deadlines

Decide on a pay frequency—weekly, biweekly, semimonthly, or monthly—and stick to it. Biweekly is the most common. Then the critical discipline: payroll taxes you withhold aren’t yours to hold onto. They must be deposited to the IRS and your state on a set schedule, typically monthly or semiweekly depending on your volume, and reported on quarterly Form 941. Miss those and the penalties escalate quickly. Good software automates this, which is precisely why it’s worth paying for.

The classification trap: don’t call an employee a contractor

When facing the cost and paperwork of payroll, some owners are tempted to just pay the worker as a “1099 contractor” instead. If the person is genuinely an employee—you control how, when, and where they work—this misclassification is illegal and expensive. You can be liable for back taxes, penalties, and interest. The Department of Labor takes it seriously, and so do state agencies. When in doubt, classify as an employee or get professional advice. (This is general information, not legal advice.)

A quick case study: the shop that skipped registration

A small retail owner hired his first part-timer, set up direct deposit, and started paying her a clean weekly wage—but never registered for state unemployment and never deposited the withheld taxes, assuming he’d “sort it out at tax time.” Nine months later, he owed back deposits, penalties, and interest totaling several thousand dollars more than the tax itself.

He switched to a payroll service that afternoon. The monthly fee was $45. Had he started there, the software would have registered the accounts, made every deposit on schedule, and the entire mess simply wouldn’t have existed. The cost of doing it right was a rounding error next to the cost of doing it wrong.

Frequently asked questions

How much does it cost to run payroll for one employee?
Payroll software typically runs $40–$50 per month for a single employee, often with a small per-employee add-on. That’s separate from the employer payroll taxes—roughly 7.65% plus unemployment—that you owe on top of wages.

Do I need an EIN to hire an employee?
Yes. You need a federal EIN to report and deposit payroll taxes, and you can get one for free directly from the IRS. You’ll usually also need state employer accounts for withholding and unemployment insurance.

Can I just pay my first hire as a contractor to keep it simple?
Only if they genuinely meet the legal definition of an independent contractor. If you control how and when the work is done, they’re an employee, and misclassifying them can lead to back taxes and significant penalties.

What happens if I miss a payroll tax deposit?
The IRS charges escalating penalties based on how late the deposit is, plus interest. Because the money you withheld belongs to the employee and the government—not you—these penalties are treated seriously, which is why automating deposits through software is strongly advised.

Image Credit: Gabby H;  Monstera Production; Pexels