Idaho sales and use tax: a plain guide for small businesses

Idaho charges a 6% state sales tax on most retail sales of goods. If you sell taxable goods to customers in Idaho, you generally collect that 6% at the register and send it to the Idaho State Tax Commission.

There's a second tax that catches people off guard: use tax. It's also 6%, and it applies to things you buy for use in Idaho when no sales tax was charged at purchase. Think of sales tax and use tax as two sides of the same coin. One gets collected when you sell, the other gets owed when you buy and nobody charged you.

If you sell taxable goods in Idaho, plan on collecting and filing the 6%. We cover the buying side (use tax) further down, because that's the part most owners forget.

Before you can legally collect sales tax, you need a seller's permit from the State Tax Commission. You get it through the Idaho Business Registration system, the same single application that handles a few other things at once.

One application covers your sales tax permit, state income tax withholding (for employees), and unemployment insurance through the Idaho Department of Labor. New employers start at the 1.0% unemployment rate. You'll also register your business with the Idaho Secretary of State.

If you're selling taxable goods, get the permit before you make your first sale.

Most businesses file Idaho sales tax monthly. The return is due on the 20th of the following month, so your January sales tax is due February 20th.

If you owe less than $750 in a quarter, the State Tax Commission may let you file quarterly instead of monthly. That's a real relief for smaller sellers and seasonal businesses, since it's three returns a year on that schedule instead of twelve.

Here's the part people miss: you file even when you had zero sales. A month with no taxable sales still needs a return showing zero. Skipping it because there was nothing to report is how penalty notices start showing up.

Use tax is where careful owners still slip. When you buy supplies, equipment, inventory, or software from an out-of-state or online seller who didn't charge Idaho sales tax, you owe 6% use tax on it yourself.

A shop tool from a supplier in another state, a software subscription, a piece of equipment off a marketplace that didn't collect Idaho tax: if you use it in Idaho and no tax was charged, that's a use tax item. It's the same 6% rate, just reported by you instead of collected by the seller.

The fix is to catch these purchases as they happen instead of at audit time. Flag any out-of-state or online buy where no Idaho tax appears on the invoice, set the amount aside, and report it. We track these during the month so they don't pile up into a surprise.

Some Idaho resort cities add a local-option tax on top of the 6% state rate. In the Teton corridor that includes Driggs, Victor, Swan Valley, and Irwin. If you make sales in one of these cities, you may owe both the state tax and the local one.

The amount depends on where the sale happens, so location drives the rate. A business selling across the Tetons can owe different totals depending on which city the sale lands in.

This is the detail a national remote firm tends to miss entirely. If you sell in any of these resort cities, confirm the current local-option rate that applies to you, and report both the state and local portions. We track the right rate by location when you sell in the corridor.

We set up and file Idaho sales and use tax as part of our bookkeeping work. That means registering your sales tax account through Idaho Business Registration, tracking what you owe inside QuickBooks, catching use tax during the month, and filing on the correct schedule with the State Tax Commission so a missed 20th doesn't turn into a penalty. Mark Browning is an advanced certified QuickBooks ProAdvisor (Online and Payroll) based in Idaho Falls, and we reply within one business day.

Your sales tax is only as accurate as your books, so we close and reconcile by the 10th. That way the taxable sales we report match what's in your file, with nothing double-counted or left out.

Some questions go past bookkeeping. Whether a specific product or service is taxable, whether you have nexus in another state, or how a particular transaction should be treated can get into tax and legal territory. Those belong with a CPA or tax preparer, and we're glad to work alongside yours. If you want us to take sales tax off your plate, ask for a free books health check and we'll get back to you within one business day.