Idaho Seller's Permit: How to Register for Sales Tax With the State Tax Commission
Idaho Seller's Permit: How to Register for Sales Tax With the State Tax Commission
If you sell taxable goods or services in Idaho, you need a seller's permit before you make those sales. The permit is your registration with the Idaho State Tax Commission to collect the state's 6% sales tax. This guide covers who needs one, who may be exempt, what to do before you apply, how the application works, and how long it takes.
This guide is informational content, not legal or tax advice. Sales tax, licensing, and business structure rules depend on your specific facts. For complex situations, talk to a qualified attorney or CPA before you file.
The short answer
- Apply for your seller's permit through the Idaho Business Registration (IBR) application at tax.idaho.gov/ibr.
- Applying is free.
- Online applications take 10 to 15 business days. Mailed applications can take up to four weeks.
- A regular permit lasts until you cancel it.
- Before you apply, get an EIN and register your entity and any assumed business name with the Idaho Secretary of State.
Which Idaho sales tax number do you need?
Searches for an idaho sales tax id, idaho state tax id, idaho sales tax number, and idaho sales tax license usually lead to the same place: the seller's permit. Idaho has no state general business license. The state's business portal, business.idaho.gov, puts it this way: registering your business is a registration, not a license.
Your federal EIN is a different number. You get an EIN from the IRS, and you use it for federal tax purposes and to register your entity. The seller's permit is the state sales tax registration. Do not give your EIN to a supplier or marketplace in place of your seller's permit number.
Who needs a seller's permit
You need a permit if any of these apply:
- You make more than two sales in a 12-month period.
- You advertise taxable sales.
- You sell to end consumers.
Selling before you apply can bring fines. If you are unsure whether you qualify for an exception, settle that question before your first sale, not after.
Exceptions that may let you skip the permit
- Occasional sales: two or fewer sales in a 12-month period.
- Small seller exemption: The exemption covers an Idaho-resident individual or sole proprietor with annual sales of $5,000 or less, who has no permanent place of business. It does not apply to an LLC or corporation, even a single-member LLC. House Bill 792, effective 2026-07-01, lets homeowners with extra yard sales qualify.
- Selling only through registered marketplace facilitators: If a registered marketplace facilitator handles every one of your sales, you may not need your own permit. Confirm with the Tax Commission that the marketplace's collection covers all of your sales.
The small seller exemption is the one most people misread. If you formed an LLC for a side business, you are outside that exemption no matter how small your sales are.
Before you apply: the order matters
Complete these steps in order. The IBR application expects your business to already exist in the state records.
| Step | Where | Cost |
|---|---|---|
| Get an EIN | IRS | Confirm with the IRS |
| File a Certificate of Organization (LLC) | SOSBiz, Idaho Secretary of State | $100 online; $120 on paper |
| File Articles of Incorporation (corporation) | Idaho Secretary of State | $100 |
| File a Certificate of Assumed Business Name (DBA) | Idaho Secretary of State, not the county | $25 online; $45 on paper, including a $20 manual data entry surcharge |
| Apply for seller's permit | IBR at tax.idaho.gov/ibr | Free |
A few details to get right:
- Registered agent. Every entity must keep a registered agent in Idaho with a physical Idaho street address. P.O. boxes are not accepted. The agent can be an Idaho resident, an authorized business entity, or a commercial registered agent. An owner may act as their own agent using an Idaho address. A DBA cannot serve as a registered agent.
- Your DBA name. If you sell under a name other than your legal name or entity name, file the assumed business name before you apply. A DBA filed with the state is statewide, so there is no county filing.
- Name checks. An LLC name must include a required entity phrase, such as LLC or L.L.C. Under Idaho Code 30-21-301, the name must be distinguishable from existing, reserved, and registered names on the Secretary of State's records. Search the records at sosbiz.idaho.gov/search/business before you file.
- Annual report. LLCs and corporations must file an annual report every year, starting one year after formation. The annual report fee is listed as no fee, but the filing is still required. It is due before the end of the month in which your Certificate of Organization or Articles of Incorporation became effective. Your seller's permit does not replace it.
Processing times at the Secretary of State are roughly 7 to 10 days for regular filings. Expedited options exist: a $40 surcharge for evidence of filing within 8 working hours, and a $100 surcharge for same day service on filings made before 1:00 p.m. Mountain time. Check current estimates on the SOSBiz Processed Through Date page.
How to apply for the permit through IBR
The IBR application at tax.idaho.gov/ibr is the seller's permit application. Use it to register for sales tax. Do not use TAP for this step. TAP is the Tax Commission's system for filing returns and paying taxes after you are registered.
- Have your EIN, your Secretary of State filing information, and your DBA details ready before you start.
- Go to tax.idaho.gov/ibr and complete the online application. Online submissions are usually faster than paper.
- Answer the questions about your business accurately. Your answers determine which accounts the Tax Commission sets up for you.
- Submit the application. Online applications take 10 to 15 business days. Mailed applications can take up to four weeks.
- If you plan to hire employees, the same IBR application can set up your withholding and Department of Labor accounts. You do not need to register for those separately.
Applying costs nothing. If anyone asks you to pay to file the seller's permit application itself, stop and check the official site before you pay.
After you receive your permit
Once your permit is approved, you are responsible for collecting and remitting sales tax on taxable sales. Idaho's state sales tax rate is 6%. Idaho has no local sales tax, except in a few resort cities that voters have approved for local sales tax. Confirm with the Tax Commission which of your products or services are taxable before you set your prices.
Keep records of every taxable sale, every tax collected, and every exempt sale. You will need them when you file and pay through TAP. Filing frequency is set by the Tax Commission, so check your account for your schedule.
Temporary permits for events and one-time sales
Idaho offers free temporary permits for events and your own sales. You may get up to 3 per calendar year. Temporary permits do not cover vehicle sales or short-term lodging. If your activity is a one-time booth at a fair or a single estate sale, ask whether a temporary permit fits your situation before you assume you need a regular permit or none at all.
Buying inventory to resell
People searching for an idaho reseller permit usually want to buy inventory without paying sales tax on it. Your seller's permit is the registration you hold as a reseller. Ask the Tax Commission which documentation your suppliers will need to accept a tax-free purchase for resale, and keep copies of that paperwork with your records.
What a seller's permit does not cover
A seller's permit is one registration. Several other obligations are separate:
- Income tax. Idaho has a flat 5.3% income tax. A default LLC is a pass-through entity, so members report Idaho income on their personal returns. An LLC that files as a partnership or S corporation owes the $10 permanent building fund tax. An LLC taxed as a C corporation pays the 5.3% business income tax plus the $10 permanent building fund tax.
- City and county rules. Counties do not issue a general business license. Some Idaho cities require a general business license or permit, while others license only specific activities. Check with your city clerk before you open. Business.idaho.gov has a Business Wizard that builds a checklist of the agencies and permits your activity needs.
- Professional licenses. Many professions are licensed by a state board. Check with that board before you offer the service.
- Contractors. Idaho has no statewide general contractor license. Contractors register with the Idaho Contractors Board at DOPL.
- Short-term rentals. Since 2026-07-01, under House Bill 583, no city or county may require a license, fee, permit, or registration for a short-term rental. State and local lodging taxes still apply, so ask the Tax Commission how those taxes apply to your property.
Common mistakes to avoid
- Giving your federal EIN where the state asks for a sales tax number.
- Making taxable sales before the permit is issued.
- Assuming an LLC qualifies for the small seller exemption.
- Believing Idaho has a state business license that you must buy in addition to the registration.
- Forgetting the annual report after forming an LLC or corporation.
- Assuming a county or city permit is included in your state registration.
Where to get help
- Idaho State Tax Commission: tax.idaho.gov
- Idaho Secretary of State: sos.idaho.gov
- Idaho Small Business Development Center: idahosbdc.org
- SBA Boise District Office: sba.gov/district/boise
For questions about your specific sales, your entity structure, or how a sales tax exemption applies to your business, consult a qualified CPA or attorney. Confirm any figure in this guide on the agency page before you rely on it, because fees and rules can change.