Hiring your first W-2 employee is a milestone, but it also triggers a set of financial and compliance obligations that catch a lot of first-time employers off guard. If you’ve only worked with contractors up to now, the shift is bigger than it looks.

You Become an Employer for Tax Purposes, Immediately

The moment you issue your first paycheck, you’re responsible for withholding federal and state income tax, Social Security, and Medicare — and for matching a portion of those payroll taxes yourself. This isn’t optional and it isn’t something you can catch up on later without penalties.

You’ll Need an EIN and State Registrations

If you don’t already have an Employer Identification Number, you’ll need one before running payroll. Most states also require separate registration for state unemployment insurance and withholding, even if you’ve operated as a business for years without employees.

Workers’ Compensation Becomes Mandatory in Most States

Nearly every state requires workers’ compensation insurance once you have even one W-2 employee, regardless of the role or hours worked. This is a real, ongoing cost that needs to be budgeted for, not an optional add-on.

Your Bookkeeping Needs to Separate Payroll From Everything Else

Payroll isn’t just another expense line — it involves liabilities (withheld taxes owed to the government), employer costs (your matching contributions), and net pay, all of which need to be tracked separately for accurate financial statements and correct tax filings.

Benefits and Overtime Rules Now Apply

Depending on your state and the role, minimum wage, overtime, and meal-break rules kick in that don’t apply to contractors. Misclassifying an employee as a contractor to avoid this is one of the most common — and costly — mistakes new employers make.

The Bottom Line

Your first hire changes your business from a tax and compliance perspective as much as it does operationally. Setting up payroll, registrations, and bookkeeping correctly from day one is far easier than untangling it after a mistake has already compounded for a few pay cycles.