There’s a moment in every business owner’s life when the math becomes undeniable: you can’t do this alone anymore. Maybe you’re turning down work because there aren’t enough hours in the day. Maybe you’re doing $15-an-hour tasks when your time is worth $150. Whatever the trigger, you’ve decided to hire your first employee — and you’ve just stepped into a thicket of federal, state, and local requirements that nobody warned you about.

Hiring your first employee isn’t just posting a job ad and picking the best resume. It’s registering as an employer with multiple government agencies, setting up tax withholding systems, verifying employment eligibility, buying insurance, and establishing payroll processes that you’ll need to maintain with precision from here on out. Skip a step and you’re looking at penalties, back taxes, or both.

Here’s every piece of it, in order.

Before You Post the Job: Getting Your Legal House in Order

Your first move isn’t writing a job description. It’s getting an Employer Identification Number from the IRS, if you don’t already have one. You can apply for an EIN online for free, and you’ll receive it immediately. You need this number before you can report any wages or withhold any taxes. It goes on every employment tax form you file.

Next, register with your state’s labor department and tax agency. Every state requires employers to register for state income tax withholding, and most require registration for unemployment insurance tax. The specific agencies and processes vary by state, but the SBA’s state-by-state licensing guide can point you in the right direction. Some states require registration before your first employee’s start date.

You’ll also need to set up your state’s new hire reporting. Federal law requires employers to report new hires within 20 days of their start date (some states give you less time). This information goes into a national database that’s used to enforce child support orders. It’s a quick online form, but missing it can trigger fines.

Workers’ compensation insurance comes next. In most states, you’re required to carry workers’ comp the moment you have one employee. Don’t wait until after your employee starts — get the policy in place before their first day. Penalties for operating without required workers’ comp vary by state, but they’re universally painful: fines, stop-work orders, and personal liability for injuries.

Finally, you need to comply with federal and state labor law poster requirements. The Department of Labor requires employers to display specific notices about minimum wage, OSHA safety standards, the Family and Medical Leave Act, and other workplace rights. Your state will have additional posting requirements. These posters need to be displayed in a conspicuous location where employees can see them. Yes, you can get fined for not having the right posters up. No, that’s not a joke.

Employee vs. Contractor: Get This Right the First Time

Before you hire anyone, you need to answer a fundamental question: is this person going to be an employee or an independent contractor? The IRS cares deeply about this distinction, and getting it wrong is one of the most expensive mistakes a new employer can make.

The difference isn’t about what you prefer or what’s easier. It’s about the nature of the working relationship. The IRS uses a multi-factor test that examines three categories: behavioral control (do you control how the work is done?), financial control (do you control the business aspects of the worker’s job?), and the type of relationship (is there a written contract? employee benefits? permanency?).

If you control when, where, and how someone works, they’re probably an employee. If you define the end result but the worker controls the process, they’re probably a contractor. The gray area in between is vast, and it’s where lawsuits happen.

Why does it matter so much? Because misclassifying an employee as a contractor means you haven’t been withholding income tax, haven’t been paying your share of FICA taxes, haven’t been paying unemployment tax, and haven’t been providing workers’ comp coverage. When the IRS or your state catches this — and they do catch it — you owe back taxes, penalties, and interest. In some cases, you owe the employee’s share of taxes that you should have been withholding. The IRS’s Publication 15 (Circular E) lays out employer tax obligations in detail.

If you’re genuinely unsure whether a role is employee or contractor territory, you can file Form SS-8 with the IRS and ask them to make the determination. It takes a while, but it gives you certainty.

Day-One Paperwork and Tax Setup

Your employee’s first day involves more paperwork than either of you would like, but every form serves a purpose and skipping any of them creates compliance risk.

Form I-9 verifies your employee’s identity and authorization to work in the United States. You’re required to complete Section 1 on or before the employee’s first day, and Section 2 — where you examine their identity and work authorization documents — within three business days of their start date. U.S. Citizenship and Immigration Services provides the form and a handbook for employers. You don’t file the I-9 with any agency; you keep it on file for three years after the hire date or one year after employment ends, whichever is later. But if ICE audits you and the I-9 is missing or incomplete, the fines start at $252 per violation and go up from there.

Form W-4 is how your employee tells you how much federal income tax to withhold from their paychecks. They fill it out; you use the information to calculate withholding according to the IRS tables in Publication 15. Most states have their own withholding form as well. If an employee doesn’t submit a W-4, you’re required to withhold as if they’d claimed single with no adjustments — which typically means more tax withheld than necessary.

You’ll also need to collect direct deposit information (or set up another payment method), have the employee complete any state-specific forms, and provide them with any required notices about your workers’ comp coverage, at-will employment status, or paid leave policies, depending on your state.

You should also have an offer letter ready — not a binding employment contract (unless you specifically want one), but a written document that spells out the job title, start date, compensation, pay frequency, work schedule, and at-will employment status. Most states presume employment is at-will, meaning either party can end it at any time for any legal reason, but putting that in writing protects both you and your employee from misunderstandings down the line. Have the employee sign and date the offer letter, and keep a copy in their personnel file.

All of this needs to happen systematically. A checklist isn’t optional — it’s the only way to ensure you don’t miss a form and discover the gap during an audit. Create a standardized new-hire packet that includes every form, notice, and document you need, and work through it in the same order every time.

Setting Up Payroll and Navigating Employer Taxes

Payroll is where most first-time employers feel the most anxiety, and honestly, the anxiety is warranted. Payroll errors compound. A mistake in January that you don’t catch until April means four months of incorrect tax deposits, four months of incorrect pay stubs, and a correction process that makes root canals look pleasant.

Your employer tax obligations break down like this. You’ll withhold federal income tax and the employee’s share of FICA taxes (6.2% for Social Security and 1.45% for Medicare) from every paycheck. On top of that, you pay the employer’s share of FICA — another 6.2% for Social Security and 1.45% for Medicare — out of your own pocket. That employer share is a real cost of employment that new business owners often underestimate.

Then there’s FUTA — the Federal Unemployment Tax Act. You pay FUTA tax at 6.0% on the first $7,000 of each employee’s wages per year. However, you get a credit of up to 5.4% if you pay your state unemployment taxes on time, which brings the effective FUTA rate down to 0.6% for most employers. Your state unemployment tax rate varies based on your industry and claims history; new employers typically start at a default rate.

You need to deposit withheld taxes with the IRS on a schedule — either monthly or semi-weekly, depending on your total tax liability. New employers typically start on a monthly schedule. Miss a deposit deadline and you’ll owe penalties that start at 2% and scale up to 15% for taxes that remain undeposited more than 10 days after an IRS notice. These penalties are assessed automatically and they’re not negotiable.

For actually running payroll, you have three options: do it yourself using IRS withholding tables and tax deposit coupons, use payroll software like Gusto, QuickBooks Payroll, or ADP Run, or hire a payroll service. If you have one to five employees, good payroll software typically runs $40 to $80 per month and handles calculations, tax deposits, filings, and pay stubs automatically. For most first-time employers, this is the right answer. The cost is trivial compared to the cost of a payroll tax penalty.

Whatever you choose, you’ll need to file Form 941 (quarterly federal tax return) every quarter and Form 940 (annual FUTA tax return) annually. At year-end, you’ll issue W-2s to your employees and file them with the Social Security Administration. These deadlines are firm, and missing them means penalties.

A few more things first-time employers consistently overlook. You need to display a workers’ comp notice in your workplace — your insurer will provide the poster. You should set up a record-keeping system for personnel files, time records, and payroll documents. The IRS requires you to keep employment tax records for at least four years after the tax becomes due or is paid, whichever is later. State retention requirements vary and can be longer. And if you’re in a state with mandatory paid sick leave, paid family leave, or other employee benefit programs, you’ll need to enroll and begin contributions from your first employee’s first paycheck.

The thing most first-time employers get wrong isn’t any single step — it’s underestimating how many steps there are. Hiring one employee turns you into a tax collector, an insurance buyer, a record keeper, and a compliance officer, all at once. You don’t need to become an expert in employment law, but you do need a system that ensures nothing falls through the cracks.

One more thing worth mentioning: the Fair Labor Standards Act sets federal standards for minimum wage, overtime pay, and youth employment. If your employee is non-exempt (most hourly workers are), you’re required to pay them at least the federal minimum wage and time-and-a-half for hours worked over 40 in a workweek. Many states and municipalities have higher minimum wages, and you’re required to follow whichever standard is most favorable to the employee. Misclassifying an employee as exempt from overtime when they don’t meet the salary and duties tests is one of the most common — and most litigated — mistakes small employers make.

Set it up right from the beginning, because retroactive fixes are always more expensive than doing it correctly the first time.