Setting up payroll in a new state: registration, unemployment tax, local taxes, and new-hire reporting

An employee working in a state generally means the company must register there for income tax withholding and for unemployment insurance, even if the company is based elsewhere. Do this before the first payroll, so taxes can be withheld and reported from the start. Starting later means catching up with penalties.

Record the employee's actual work address, not just the mailing address. Register with the state's tax agency for withholding and with its labor or workforce agency for unemployment insurance. Obtain the state account numbers and give them to your payroll provider. Collect the state's version of the withholding form if it has one, and check workers' compensation coverage, since many states require coverage in the state where the employee works.

Employers pay unemployment tax at a rate set by each state, usually on wages up to a base. A new employer gets a new-employer rate. Make sure wages are mapped to the right state and reconcile the state's quarterly report to the payroll register. Some states also have programs, such as paid family leave, that collect contributions from employers or employees.

Some cities, counties, and school districts levy their own income or payroll taxes. They are easy to miss because they sit below the state. Ask your payroll provider whether the employee's address triggers a local tax, and register where required.

Federal law requires employers to report new hires to the state, generally within 20 days of hire, and some states set a shorter limit. Add it to the onboarding checklist and keep the confirmation.

Federal payroll tax deposits follow a monthly or semiweekly schedule that depends on the amount you reported in a prior lookback period, and large liabilities require next-day deposits. The deposit due date is separate from the quarterly return deadline. State deposit schedules differ, so confirm each.