What You’ll Accomplish
If you’re selling products or certain services, chances are you need to collect sales tax from your customers and hand it over to your state government. This guide walks you through exactly how to register for a sales tax permit (sometimes called a seller’s permit, sales tax license, or resale certificate) so you can legally collect and remit sales tax.
By the end of this guide, you’ll know how to determine where you need to register, what information you’ll need to gather, how to complete the actual registration process, and what to do once you’re approved.
Who this guide is for: New business owners launching an online store, retail shop, or service business that sells taxable goods or services. It’s also useful for existing business owners expanding into new states or adding taxable product lines.
What you’ll need:
- Your business formation documents (LLC, corporation, or sole proprietorship info)
- Your Employer Identification Number (EIN) or Social Security Number
- Basic details about your business activities and estimated sales
- About 30-60 minutes per state to complete the online application
Let’s get your business set up to collect sales tax the right way.
Before You Start
Prerequisites
Before you dive into registration, you need to confirm a few things:
1. You have “nexus” in the state. Nexus is a legal term meaning your business has a significant enough connection to a state that you’re required to collect sales tax there. This can be triggered by having a physical location, employees, inventory (including in a fulfillment center), or reaching a certain sales threshold in that state (economic nexus).
2. Your product or service is taxable. Most tangible goods are taxable, but many states exempt groceries, prescription medications, and certain services. Digital products and software-as-a-service (SaaS) rules vary widely by state.
3. Your business is legally formed. You should have your LLC, corporation, or sole proprietorship set up before registering for sales tax, since you’ll need your business’s legal name and formation details on the application.
Preparation Steps
Start by making a list of every state where you might have nexus. If you sell online, this list can grow quickly as your sales increase, since many states set economic nexus thresholds around $100,000 in sales or 200 transactions annually.
Next, check each state’s specific rules on their Department of Revenue (or equivalent) website. Every state calls this office something slightly different — Department of Revenue, Department of Taxation, Comptroller’s Office, or Board of Equalization — but they all serve the same function.
Finally, decide whether you’ll register yourself through each state’s online portal or use a service to handle multi-state registration on your behalf, which can save significant time if you’re registering in five or more states.
Information to Gather
Before starting any application, collect the following:
- Legal business name and any DBA (“doing business as”) names
- EIN (or SSN if you’re a sole proprietor without an EIN)
- Business formation date and state of formation
- Business address and mailing address
- Owner or officer names, addresses, and SSNs
- NAICS code (a standardized code describing your business activity)
- Estimated monthly or annual taxable sales
- Bank account information (some states ask for this for direct debit of tax payments)
- Start date of taxable sales in that state
Step-by-Step Process
Step 1: Confirm You Have Nexus in the State
Before registering, verify you actually meet the state’s nexus threshold. Registering in a state where you don’t have nexus creates unnecessary filing obligations. Most states publish their economic nexus rules clearly on their tax agency websites — search “[state name] economic nexus sales tax” to find the specific threshold.
Tip: If you’re borderline or unsure, it’s often safer to register anyway once you’re close to a threshold, since penalties for failing to collect tax when required can be steep.
Step 2: Gather Your Business Information
Pull together all the details listed in the section above. Having everything on hand before you start the online application prevents you from getting halfway through and having to stop to track down a document.
Tip: Keep a single spreadsheet with your business info so you can copy-paste the same details across multiple state applications without retyping everything each time.
Step 3: Locate the State’s Tax Registration Portal
Go to the official website for that state’s Department of Revenue or equivalent tax authority. Look for a section called “Business Registration,” “Sales Tax Permit,” or “Register a New Business.” Nearly all states now offer fully online registration.
Tip: Always use the official .gov website. Third-party sites sometimes charge unnecessary fees for services the state offers for free.
Step 4: Create an Account or Login
Most states require you to create a business tax account before you can submit your application. This account will also be where you file returns and make payments going forward, so use an email address you’ll check regularly and a password you’ll remember.
Step 5: Complete the Sales Tax Application
Fill in your business details, including your legal structure, EIN, business address, and the nature of your business activities. You’ll typically be asked:
- What products or services you sell
- Where your inventory is located
- Whether you sell online, in-store, or both
- Your anticipated start date for collecting sales tax
- Your estimated monthly sales volume
Tip: Be accurate but not overly conservative with your sales estimates — some states use this number to determine your filing frequency (monthly, quarterly, or annually).
Step 6: Submit and Pay Any Registration Fee
Most states don’t charge a fee to register for a sales tax permit, but a few do (typically $10-$100). Review your application carefully before submitting, since some states make it difficult to correct errors after submission.
Step 7: Receive Your Sales Tax Permit or License Number
After approval, you’ll receive a sales tax permit number, either instantly online or by mail within a few days to a few weeks depending on the state. This number must be displayed at your physical business location in many states, and you’ll use it on resale certificates when purchasing inventory tax-free.
Step 8: Set Up Your Filing Schedule
Once registered, the state will assign you a filing frequency. Mark these deadlines on your calendar immediately so you don’t miss your first return.
Requirements
Documents Needed
- Formation documents (articles of organization/Incorporation)
- EIN confirmation letter from the IRS
- Government-issued ID for the business owner(s)
- Lease agreement or proof of business address (in some states)
Information Required
- Legal business name, structure, and formation state
- NAICS or SIC code describing your industry
- Ownership information for all owners/officers with 10%+ stake
- Projected sales and taxability details
State Considerations
Every state has its own quirks:
- No sales tax states: Alaska, Delaware, Montana, New Hampshire, and Oregon don’t have a general statewide sales tax, though Alaska allows local jurisdictions to impose one.
- Home rule states: Colorado and a few others allow individual cities to administer their own separate sales tax registration, meaning you may need to register with the state and certain cities separately.
- Marketplace facilitator laws: If you sell exclusively through platforms like Amazon or Etsy that collect and remit tax on your behalf, you may not need to register in every state, but rules vary — check each state’s specific marketplace facilitator law.
Tips for Success
- Register before you start collecting tax, not after. Collecting sales tax without a valid permit is illegal in most states, even if you plan to remit it.
- Track nexus thresholds quarterly, especially if your online sales are growing. It’s easy to cross an economic nexus threshold without noticing.
- Use a dedicated tracking tool or spreadsheet to monitor which states you’re registered in, your permit numbers, and your filing due dates.
- Register for sales tax automation software once you’re registered in more than a few states — manually calculating and filing in multiple jurisdictions becomes unmanageable quickly.
- Keep your resale certificates organized so you can provide them to suppliers when purchasing inventory for resale tax-free.
Common Mistakes
Mistake: Registering in states where you don’t have nexus. This creates unnecessary filing obligations and paperwork. Fix: Confirm nexus before registering, and deregister if you mistakenly signed up in a state without a nexus obligation.
Mistake: Waiting too long to register. Some business owners wait until they’re “big enough” to worry about sales tax, which can result in back taxes, penalties, and interest. Fix: Register as soon as you cross a nexus threshold or open a physical location.
Mistake: Using the wrong legal business name or EIN. This can cause your application to be rejected or delayed. Fix: Double-check your formation documents and EIN confirmation letter before submitting.
Mistake: Forgetting to file “zero returns.” Many states require you to file a return even in months with no sales, and failing to do so can result in penalties or automatic permit revocation. Fix: File on schedule every period, even if you owe nothing.
Mistake: Not updating your registration when your business changes. Adding a new product line, opening a new location, or changing your business structure may require an update to your registration. Fix: Review your registration annually and update it whenever your business changes significantly.
Next Steps
Once you’re registered, here’s what to do next:
1. Set up a system to collect sales tax at checkout, whether that’s your e-commerce platform’s built-in tax tools or dedicated sales tax software.
2. Note your filing deadlines for every state where you’re registered and set calendar reminders well in advance.
3. Open a separate bank account or sub-account to hold collected sales tax so you’re not tempted to spend money that isn’t yours.
4. Review your nexus status regularly, especially if you’re growing quickly or expanding into new states.
5. File and remit on time, every time, even if it means filing a zero return.
FAQ
Do I need a sales tax permit if I only sell online?
Yes, if you have nexus in a state — whether through a physical presence, inventory, or meeting that state’s economic nexus threshold — you need to register there, regardless of whether your sales happen online or in person.
How much does it cost to register for a sales tax permit?
Most states don’t charge a registration fee, but some charge a small fee ranging from $10 to $100. Check your specific state’s tax agency website for exact costs.
How long does sales tax registration take?
Many states approve applications instantly or within a few business days when submitted online. A few states take up to a few weeks to mail a physical permit.
Do I need a separate permit for each state I sell in?
Yes, sales tax registration is state-specific. If you have nexus in multiple states, you’ll need to register separately with each one.
What happens if I don’t register for sales tax when required?
You could face back taxes, penalties, and interest, and in some cases personal liability for business owners. It’s always better to register promptly once you determine you have nexus.
Conclusion
Registering for sales tax might not be the most exciting part of running a business, but getting it right from the start protects you from costly penalties down the road and keeps your business in good standing. With the steps in this guide, you now have a clear roadmap for figuring out where you owe sales tax, gathering the right information, and completing your registration with confidence.
Of course, sales tax is just one piece of building a solid business foundation. If you haven’t yet formed your LLC or corporation, or if you’re ready to protect your brand with a trademark, LegalZone.com is here to help. We’ve helped thousands of entrepreneurs form their businesses with affordable pricing, fast filing turnaround, and expert support every step of the way. Start your business journey with LegalZone.com today, and let us help you build it right from day one.
