Every time a company expands into a new state — whether by opening an office, hiring a remote employee, or crossing a sales tax economic nexus threshold — a set of compliance obligations are triggered that must be addressed in a specific sequence. Missing any step creates liability; addressing them in the wrong order (e.g., trying to file payroll taxes before registering as an employer) creates system errors and delays. This checklist covers every required step in the correct order.
Step 1: Determine Your Nexus Trigger
Identify what triggered the new state obligation: physical office, full-time remote employee, economic nexus for sales tax (typically $100,000 in sales or 200 transactions), or an affiliate with in-state presence. Different nexus triggers create different obligation sets — a remote employee triggers employment law and payroll obligations; a warehouse triggers physical nexus for sales tax; economic nexus triggers only sales tax registration.
Step 2: Foreign Qualify the Entity
If the nexus trigger creates an obligation to "transact business" in the state (physical office, regular employees, contracts performed in-state), file an Application for Authority (foreign qualification) with the Secretary of State before any other state registration. Foreign qualification is a prerequisite for some state registration systems and creates the legal authority to operate in the state. Get a Certificate of Good Standing from your home state first — most states require it.
Step 3: Designate a Registered Agent
Every foreign qualification requires designation of a registered agent in the new state. This can be a commercial registered agent service ($50–$150/year) or a resident individual. The registered agent's address must appear on the Application for Authority and can be updated later via a separate filing.
Step 4: Register for State Payroll Tax Withholding
If you have employees in the new state, register for a state income tax withholding account with the state's Department of Revenue or Taxation before running the first payroll. For states with no income tax (Florida, Texas, Washington, etc.), skip this step.
Step 5: Register for State Unemployment Insurance (SUI)
Register for SUI with the state's workforce or employment agency. Required in every state with at least one employee, regardless of income tax status. Apply for a new employer SUI rate.
Step 6: Register for Special Programs
Check whether the new state has mandatory programs requiring separate registration: California SDI, Washington WA Cares and PFML, Massachusetts PFML, Colorado FAMLI, Oregon Paid Leave. Each requires a separate registration and has its own premium contribution schedule.
Step 7: Obtain Workers' Compensation Coverage
Verify workers' comp coverage extends to employees in the new state. Some states require a state-specific endorsement; Ohio, Washington, and North Dakota require enrollment in the exclusive state fund. Do not assume existing coverage extends automatically.
Step 8: Register for Sales Tax (If Nexus Is Triggered)
If the new state activity triggers sales tax nexus (physical or economic), register for a sales tax permit with the state's Department of Revenue. Begin collecting sales tax from customers in the state from the registration effective date. Do not back-collect retroactively — that creates customer relations issues. Address retroactive exposure via voluntary disclosure if necessary.
Step 9: Review Employment Law Obligations
Each state has its own employment law requirements: minimum wage (often higher than federal), overtime rules, break and meal period requirements, final pay timing, paid leave mandates, and non-compete enforceability. Review the new state's employment law profile and update offer letters, employee handbook, and payroll setup accordingly.
Step 10: Update Compliance Calendar
Add all new state obligations to your compliance calendar: annual report deadline (for the foreign registration), SUI quarterly returns, withholding return frequency, sales tax return frequency, and any special program premium deadlines. In Compliance Singularity, this step is automatic — the system generates all new obligations when you add the new state to your company profile.