How to Get a Seller’s Permit in Idaho: Apply, File, and Close

To get a seller’s permit in Idaho, apply through the Idaho State Tax Commission’s online business registration system. The application is free, takes about 15 minutes, and the permit arrives by mail within 10 to 15 business days.¹ Once you have it, you’re responsible for collecting Idaho’s 6% sales tax from customers and sending it to the state on the schedule the Commission assigns you.²

Do You Actually Need a Permit

If you sell tangible goods, taxable services, or digital products to Idaho customers, you almost certainly need one. That covers storefronts, online stores, food trucks, and service businesses that charge admissions, rentals, or recreation fees.

The requirement kicks in through what Idaho calls nexus. Physical nexus comes from a storefront, warehouse, office, inventory, or sales staff in the state. Economic nexus applies to out-of-state sellers whose Idaho sales exceed $100,000 in the current or previous calendar year, even without any physical presence.³

Selling Through a Marketplace

If every one of your Idaho sales goes through a platform like Amazon, Etsy, or eBay, the marketplace itself is likely collecting and remitting Idaho sales tax for you, and you may not need your own permit. Idaho requires marketplace facilitators to handle sales tax once their combined direct and third-party Idaho sales top $100,000.³ But the moment you also sell through your own website, at a craft fair, or anywhere the marketplace isn’t collecting, you need a permit for those sales.⁴

Occasional Sellers and the Small-Seller Exemption

If you only sell at the occasional event, Idaho offers a temporary seller’s permit instead of a regular one. You can hold up to three temporary permits per calendar year before you’re required to switch to a regular permit.⁵ Temporary permits are not available for sellers or lessors of vehicles, or for people renting short-term lodging directly (renting exclusively through a platform like Airbnb or VRBO that handles tax collection is the exception).

Idaho residents who sell less than $5,000 per year and meet other requirements may qualify for a small-seller exemption and need no permit at all.⁵

One boundary worth stating: not every service is taxable in Idaho. Accounting, legal work, haircuts, and most repair labor generally aren’t. If your business only provides non-taxable services, you likely don’t need a permit at all.

What to Gather Before You Apply

Collect this information before you start, so you can finish in one sitting:

Business legal name and trade name (your “doing business as” name, if different)
Physical and mailing addresses
Business structure: sole proprietorship, partnership, corporation, or LLC
Federal Employer Identification Number (FEIN), or your Social Security Number if you’re a sole proprietor without employees
Names, addresses, and SSNs of all owners, partners, or corporate officers
Description of business activities and what you sell
Estimated start date for sales in Idaho
Estimated monthly taxable sales

Your sales estimate isn’t binding. The Tax Commission uses it to assign your initial filing frequency, and that frequency adjusts over time as your actual numbers come in.

Submitting the Application

The fastest route is the Idaho Business Registration application on the Tax Commission’s website. The system walks you through each section and sends a confirmation shortly after you submit. Your permit arrives by mail within 10 to 15 business days.¹

If you prefer paper, download Form IBR-1 from the Tax Commission’s website and mail it to Idaho Business Registration, PO Box 36, Boise, ID 83722-0410.⁶ Paper takes up to four weeks to process.¹

There’s no fee for a new permit. Idaho only charges when a previously revoked permit needs to be reissued: $10 for a first revocation, $25 for each one after that.⁷

What Happens After the Permit Arrives

Your permit comes with your sales tax account number. Post it in a visible spot at your business. The permit is tied to you specifically and cannot be transferred if you sell the business; a new owner has to apply for their own.⁷

You’ll also receive a code to set up a Taxpayer Access Point (TAP) account. TAP is where you file returns, make payments, and manage the account. Set it up right away rather than waiting for your first return.

Filing Frequency and Due Dates

The Tax Commission assigns a filing frequency based on how much tax you collect:⁸

Monthly filers (most retailers) owe the return and payment by the 20th of the following month. If the 20th lands on a weekend or holiday, the deadline moves to the next business day.
Quarterly filing is available if you owe less than $750 per quarter. Payment is due within 20 days after the quarter ends.
Semiannual or annual filing is available to distributors and wholesalers with minimal retail sales. Semiannual payments are due July 20 and January 20; annual payments are due January 20.

Even if you had no sales during a period, file a $0 return. Skipping a filing because there’s nothing to report is one of the most common early mistakes, and it can trigger penalties.

Buying Inventory Tax-Free

Holding a seller’s permit lets you buy inventory without paying sales tax on it, since you’ll collect the tax when you resell. Fill out Idaho Form ST-101, the Sales Tax Resale or Exemption Certificate, and give it to your supplier.⁹ The supplier keeps the completed form on file.

Only use the certificate for items you genuinely intend to resell. Misusing it on office supplies, equipment for your own use, or personal purchases can bring a penalty of 5% of the purchase price or $200, whichever is greater.¹⁰ Suppliers can verify your permit number on the Tax Commission’s website.

Penalties for Non-Compliance

Selling without a permit, filing late, or failing to remit collected tax can bring consequences. The Tax Commission can suspend or revoke your permit, and reinstating a revoked permit costs $10 the first time and $25 each time after.⁷ While a permit is revoked, you can’t legally make retail sales until it’s restored.

Late returns and payments also accrue interest and penalties, which the Tax Commission publishes on its website. The amounts grow the longer you wait, so if you’ve missed a deadline, file as soon as you can.

Closing the Permit When You’re Done

If you stop making Idaho sales (whether you close the business, move out of state, or just stop selling taxable goods), don’t let the permit sit open. Leaving it active means the Tax Commission still expects returns, and missed filings can bring penalties even with no sales. Log in to TAP, file a final return covering your last period of activity, remit any remaining tax, and request the closure. If you’re selling the business, remember the new owner needs their own permit; yours doesn’t transfer.⁷

1
Idaho State Tax Commission. Getting Tax Permits
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Idaho State Tax Commission. Sales and Use Taxes: Basics Guide
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Idaho State Tax Commission. Online Sellers Guide
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Idaho State Tax Commission. Guides for Different Business Types – Online Sellers
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Idaho State Tax Commission. Temporary Seller’s Permits
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Idaho State Tax Commission. Form IBR-1 Business Registration Form
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Idaho State Legislature. Idaho Code Title 63 Revenue and Taxation 63-3620
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Idaho State Tax Commission. Sales Tax: Filing and Paying
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Idaho State Tax Commission. Form ST-101 Sales Tax Resale or Exemption Certificate
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Idaho State Legislature. Idaho Code Title 63 Revenue and Taxation 63-3624