How to Start an Online Business in Idaho: Seller's Permit, Sales Tax and Registration

Starting an online business in Idaho is mostly a registration exercise. Idaho has no state license to sell online, so you do not wait for approval before you sell. What you do need is an entity filed with the Idaho Secretary of State, an assumed business name if you trade under anything other than your legal name, and, if you sell taxable goods, a sales tax permit from the Idaho State Tax Commission. This guide puts those steps in the order you should take them, with the fees and deadlines that apply.

This article is informational content, not legal or tax advice. Every business is different. If you plan to sell in several states, carry significant inventory, or have partners, talk with an Idaho business attorney and a certified public accountant (CPA) before you file.

What you need before you start

Gather these items first. Most of the filings below are completed online, so having everything ready keeps you from starting and stopping.

• A business name you have checked in the Idaho Secretary of State business search.
• A physical Idaho street address for your registered agent. P.O. boxes are not accepted.
• An SOSBiz account and a payment card for filing fees at SOSBiz.
• A federal Employer Identification Number (EIN) from the IRS. Banks and tax agencies commonly ask for one.
• A written list of what you will sell and where your buyers are located. This tells you whether sales tax applies and whether out-of-state sales could push you past Idaho's economic nexus threshold.
• Sales records from the last 12 months if you already sell online, so you can check your totals against the $100,000 threshold covered in Step 8.

Step 1: Confirm what Idaho licenses and what it only registers

Idaho does not have a state business license. Business.Idaho.gov puts it plainly: registering your business is a registration, not a license. Filing your LLC or assumed business name with the Secretary of State is a registration step. It does not grant permission to operate.

Local rules are different. Counties do not issue a general business license. Some cities require a general business license or permit, and others license only specific activities. We have not confirmed which Idaho cities require a general license, and that includes Boise, so do not assume the answer for your city. Call the City Clerk where your business will be located. You can also use the Business Wizard at business.idaho.gov to generate a checklist of the agencies and permits your activity needs.

Some activities have their own state rules. Idaho has no statewide general contractor license. Contractors register with the Idaho Contractors Board at the Division of Occupational and Professional Licenses (DOPL). Other professions are licensed through state boards. If your online business sells a regulated service, check with that board before you launch.

Step 2: Choose your entity and check your name

Most online sellers form a limited liability company (LLC) because it generally separates your personal assets from business debts and is simple to run. A default LLC is a pass-through entity, so its members report Idaho income on their personal returns. Whether an LLC or a corporation fits your situation depends on taxes and growth plans, so ask a CPA before you choose. A corporation files Articles of Incorporation with the Secretary of State for the same $100 filing fee.

Idaho Code 30-21-302(d) sets the name rules for an LLC. The name must contain “limited liability company,” “limited company,” “L.L.C.,” “LLC,” “L.C.,” or “LC.” “Limited” may be abbreviated “Ltd.” and “company” may be abbreviated “Co.” Under Idaho Code 30-21-301, the name must be distinguishable from names already on the Secretary of State's records, including reserved and registered names. Entity-type words such as “LLC” or “Inc.” are not counted when testing distinguishability, so “Sunrise Goods” and “Sunrise Goods LLC” are treated as the same name. The name also cannot falsely state or imply government affiliation.

Search the name in the business search before you file. If you need time to decide, you can reserve a name for 120 days for $20.

Step 3: File the certificate of organization

File the Certificate of Organization (Limited Liability Company) through SOSBiz. The filing fee is $100 online or $120 on paper. The Secretary of State's business forms page says filings are processed in approximately 7 to 10 days from the filing date. Current estimates are posted on the SOSBiz Processed Through Date page, so check it before you plan a launch date.

Two expedite surcharges are available under Idaho Code 30-21-214. A $40 surcharge gets you evidence of filing within 8 working hours. A $100 surcharge gets same-day service for filings submitted before 1:00 p.m. Mountain time. Pay for expedited service only if you need the filing that day. Confirm the current options on the Secretary of State site before you pay.

Step 4: Appoint a registered agent

Every Idaho entity must continuously maintain a registered agent in Idaho. The agent needs a physical Idaho street address, must be available during normal business hours, and can be an Idaho resident, an authorized business entity, or a listed commercial registered agent. An owner may act as their own registered agent using an Idaho address. A DBA cannot serve as your registered agent.

Choosing between yourself and a commercial agent is a tradeoff. Acting as your own agent costs nothing beyond your filing fees, but your address appears on public records. A commercial agent can keep your home address off the public filing, but it charges an annual fee that varies by provider. Compare prices before you choose, and note the renewal date, since a lapse leaves the requirement unmet.

Step 5: File an assumed business name if you trade under another name

If your storefront or website uses a name other than your LLC's legal name, you need an assumed business name (the Idaho DBA). Idaho files these with the Secretary of State, statewide, not with the county, so do not look for a county form. The online fee is $25. A paper filing costs $45, which includes a $20 manual data entry surcharge. An assumed business name stays active until you cancel it and does not require renewal. Confirm the form and current fee on the Secretary of State business forms page before you file.

Step 6: Calendar your annual report

Every Idaho LLC must file an annual report each year, beginning one year after formation. It is due before the end of the month in which your Certificate of Organization became effective. Idaho Code 30-21-214 lists the annual report fee as no fee, so filing costs nothing, but the report is still required. Put the due date on your calendar the day your entity is formed. Corporations follow the same schedule, measured from the month their Articles of Incorporation became effective.

If your online business also rents short-term lodging, note that since July 1, 2026, HB 583 bars cities and counties from requiring a license, fee, permit, or registration for a short-term rental. State and local lodging taxes still apply.

Step 7: Register for a sales tax permit if you sell taxable goods

Idaho's state sales tax rate is 6%. Idaho has no general local sales tax, with the exception of local option taxes that voters have approved in certain resort cities. Idaho calls this a sales tax permit, though you may see it called a seller's permit in other states. If you sell taxable goods to Idaho customers, get the permit before you start collecting tax.

Register online through TAP or the Idaho Business Registration at tax.idaho.gov/ibr. Tax Commission registration guidance indicates there is no registration fee, but confirm that on tax.idaho.gov before you submit.

Do not rely on the occasional sale or small seller exemptions. House Bill 792 (2026, effective July 1, 2026) revised both. They are meant for individuals who are not in the business of selling. A real online business should plan on holding a permit.

Step 8: Understand economic nexus and marketplace sales

You can owe Idaho sales tax even if you have no office, warehouse, or employees in the state. Under Idaho Code 63-3611(h), a remote seller with no Idaho physical presence must collect once its cumulative gross receipts delivered into Idaho exceed $100,000 in the previous or current calendar year. Since June 1, 2019, there is no separate transaction count, so a few large orders can trigger the rule as easily as many small ones.

Track your delivered sales by calendar year in a simple spreadsheet. Once you cross the threshold, you must collect, so plan to have your permit in place before you reach it.

Marketplace facilitators, such as Amazon, Etsy, and similar platforms, collect and remit sales tax on the sales they process for you. That does not cover everything. Sales you make directly through your own website or outside the platform remain your responsibility. Confirm with the Tax Commission how marketplace sales count toward your nexus totals.

Step 9: Plan for income tax

Idaho's income tax is a flat 5.3% starting with tax year 2025. How it applies to your business depends on how the entity is taxed. A default LLC is a pass-through entity, so its members report Idaho income on their personal returns at the flat rate. An LLC that files a partnership or S corporation return 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.

Confirm which set of rules fits your entity with a CPA, and check current filing requirements on tax.idaho.gov.

Fees at a glance

Item	Cost	Filed with
LLC Certificate of Organization	$100 online, $120 on paper	Idaho Secretary of State
Expedite surcharge (evidence of filing within 8 working hours)	$40	Idaho Secretary of State
Same-day surcharge (filed before 1:00 p.m. Mountain time)	$100	Idaho Secretary of State
Name reservation (120 days)	$20	Idaho Secretary of State
Assumed business name (DBA)	$25 online, $45 on paper	Idaho Secretary of State
Annual report	No fee	Idaho Secretary of State
Sales tax permit	Confirm on tax.idaho.gov	Idaho State Tax Commission

Tips before you file

• Use the same legal name in your SOS filing, your bank account, and your payment processor. Use the DBA only for the public-facing name.
• Ask the City Clerk one specific question: does my activity require a general business license, or a license for a specific activity?
• Save every filing confirmation and the approved Certificate of Organization in a shared folder.
• Update your registered agent's address or contact details if you move, and keep the sales tax permit information current with the Tax Commission.

Common mistakes to avoid

• Filing a DBA with a county office. Idaho assumed business names go to the Secretary of State.
• Assuming a state business license is required, or assuming no local license is ever needed. Idaho has no state business license, but some cities require a general license or permit.
• Using a P.O. box as the registered agent address. Idaho requires a physical street address.
• Using your DBA as the registered agent. A DBA cannot serve in that role.
• Relying on the occasional sale or small seller exemptions for an ongoing business.
• Ignoring out-of-state buyers. Once cumulative Idaho deliveries pass $100,000 in a calendar year, you must collect.
• Skipping the annual report because it has no fee. The report is still required every year.
• Assuming marketplaces handle all of your sales tax. They collect on sales they process, not on your direct sales.
• Choosing an LLC name too close to an existing one. Entity words such as LLC do not count when checking distinguishability, so a near-match can be rejected.

Expected results

Once your entity, registered agent, and any DBA are on file, many owners find they can start selling with a clear record of what they are registered for. A sales tax permit can help you collect and report Idaho tax correctly from your first taxable sale. Processing estimates for the Secretary of State run about 7 to 10 days, and expedited service may shorten that window. Timelines change, so check the current processing page before you set a date. Nothing in this guide promises a particular sales result.

Next steps and where to get help

Check current forms and rules at the Idaho Secretary of State and the Idaho State Tax Commission before you file. The Idaho Small Business Development Center offers counseling for new owners, and the SBA Boise district office can point you to local resources.

Disclaimer: This article is informational content only. It is not legal, tax, or accounting advice, and it does not create an attorney-client or CPA-client relationship. Fees, deadlines, and rules change. Confirm every figure with the agency named before you file, and consult a qualified Idaho attorney and CPA for your specific situation.