Hiring in a New State: Payroll Registration Checklist

A registration obligation generally starts when you have an employee performing work in a state, and remote employees count. Where the employee lives and where they work both matter, and states differ on how they treat each. Some states have agreements that let residents of a neighboring state avoid withholding in the state where they work, but those are the exception to check for, not the rule to assume.

Trigger points to watch for:

• You hire someone who lives in a state where you have no employees.
• An existing employee moves and keeps working for you.
• An employee splits time between two states for long stretches.
• You send employees to work in another state for extended periods.

Ask employees to tell you before they move, and make it a documented step in your relocation and remote work policies. Discovering a move months later means back filings.

Work through these in sequence, since some steps depend on earlier ones:

1. Check whether the business needs to register to do business in the state, since some states require it before other accounts are opened. Confirm with your CPA or attorney.
2. Register with the state tax agency for income tax withholding.
3. Register with the state's unemployment insurance agency and get your rate and account number.
4. Arrange workers' compensation coverage that covers the state, through your carrier or a state fund where required.
5. Check for other state programs, such as paid family leave, disability insurance or training taxes, and register for any that apply.
6. Check for city or county taxes, which can require separate registration.
7. Add the state and account numbers to your payroll system before the first run.

Many payroll providers can register on your behalf for a fee or as part of a plan. Ask which states they handle and how long registration typically takes, and get the answer in writing.

Each new state may bring its own withholding form, alongside the federal Form W-4. Collect the state form from the employee in the first week and enter the details in payroll. Confirm the employee's work location and home address separately, since taxes may depend on both.

Also check that the employee's state-specific sick leave, minimum wage, pay frequency and final-pay rules are followed. These vary widely, including by city, and can differ from your home state's rules. Update your handbook for state-specific policies, as part of your handbook, or add a state addendum. Ask an employment attorney about anything you're unsure of, since wage and leave rules are where mistakes cost the most.

Say your company is based in one state and hires a marketing manager who works from home in another. Here's how the sequence plays out.

Two weeks before the start date, you learn the employee's address and ask your payroll provider what registrations the state requires. They tell you which forms are needed, and you complete the tax withholding and unemployment registrations. Your workers' compensation carrier confirms coverage for the new state. On day one, the employee completes the federal and state withholding forms. Before the first pay date, you confirm the state accounts appear in payroll and a test run calculates state tax.

The mistake to avoid is running the first payroll under your home state and fixing it later. That produces amended filings and confused employees, and it can create penalties.

Keep a simple register with one row per state: which accounts you hold, the account numbers, filing frequency, who owns filings and the renewal or review date. Review it quarterly and after any hire or move.

Watch for these common gaps:

• A state account opened for one employee that stays open after they leave, with returns still due.
• Rate notices sent to an old address or an inbox no one checks.
• Workers' compensation policies that don't list the new state.
• No one owning the register, so nothing gets updated.

If you're deciding whether to change providers to handle several states, see the payroll provider switching checklist and PEO vs payroll software. Compare specific providers in this payroll platform comparison.