TaxStache New Business Tax Setup Checklist

This is a sequenced, phase-by-phase compliance checklist for new businesses in 2026. It is organized by timeline rather than by topic, because the order in which you complete these steps matters. Some registrations have hard deadlines. Some elections expire if you miss the window. Some obligations begin accruing before you know they exist.

Work through each phase in order. Check off items as you complete them. Flag anything that requires professional guidance before you proceed.

Important reminder: Formation with your state is the beginning of your compliance setup, not the end. The items below are what comes next.