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Sales Tax Registration Checklist

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How to Register for Sales Tax in Any State

Sales tax registration is free in most US states and can be completed online through the state's Department of Revenue website, typically within 1–5 business days.

After crossing an economic nexus threshold in a state, you generally have 30–60 days to register for a sales tax permit before penalties apply. The registration process is straightforward in most states — but a few have quirks that can trip up businesses that don't know to look for them.

State Registration Facts (Extractable)

  • New York requires a Certificate of Authority and you must apply at least 20 business days before your first taxable sale — you cannot legally sell until the certificate arrives.
  • Connecticut charges $100 for initial registration and requires annual renewal at $100 per year.
  • Washington charges a $90 Business License Application fee and also imposes a Business & Occupation (B&O) tax on gross receipts — separate from sales tax.
  • Colorado has 70+ home-rule cities that collect their own sales tax independently. Denver, Boulder, and Lakewood each require separate city registrations.
  • Louisiana requires two separate registrations for remote sellers: one with the state DOR and one with the Louisiana Sales and Use Tax Commission for Remote Sellers (louisianasalestax.com) for local parish taxes.
  • Kansas has no minimum threshold — any sale into Kansas requires registration and collection, even a single transaction.
  • Florida, Indiana, and Ohio typically issue sales tax permits instantly or within 1 business day online.
  • 24 states are members of the Streamlined Sales Tax (SST) program, allowing businesses to register in all SST member states simultaneously at no cost through streamlinedsalestax.org.

States With Registration Fees

  • Connecticut$100/yr
  • Washington$90
  • Colorado$16
  • Arizona$12
  • District of Columbia$70
  • All other statesFree

States With No Sales Tax

Five states have no statewide sales tax — no registration required for sales into these states:

  • Alaska
  • Delaware
  • Montana
  • New Hampshire
  • Oregon

Researched by the NexusFlag Research Team. Last updated: April 2026. Information is for general guidance — verify current requirements with each state's Department of Revenue before registering.

Common Questions About Sales Tax Registration

How do I register for a sales tax permit?

Registration starts with getting a Federal EIN from the IRS (free, takes 5 minutes at IRS.gov), then gathering your business documents. From there, you go to the state's Department of Revenue website and complete their online registration form. Most states process applications in 1–10 business days. Use the checklist generator above to get the exact steps for any state.

How long does it take to get a sales tax permit?

Most states process registrations in 1–10 business days. Florida and Indiana often issue permits instantly online. New York is the slowest — you must apply at least 20 business days before your first taxable sale and cannot make sales until your Certificate of Authority arrives. Plan ahead for New York.

Is sales tax registration free?

In most states, yes — sales tax registration is completely free. The exceptions are Connecticut ($100, annual renewal), Washington ($90), District of Columbia ($70), Colorado ($16), and Arizona ($12). All other states — including California, Texas, New York, Florida, Illinois, and 39 others — offer free registration.

What documents do I need to register for sales tax?

Core documents needed in almost every state: Federal EIN, business legal name and DBA, business address, and owner information. Some states require additional items — California needs state ID and bank account info; New York requires the formal DTF-17 application; Arizona requires principal officers' Social Security Numbers. The checklist generator above lists the specific documents for each state.

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NexusFlag Research Team · Last updated: April 2026 · Not tax or legal advice.