Idaho Sales Tax Calculator 2026

How to Use the Idaho Sales Tax Calculator

Use the Idaho sales tax calculator when you know the purchase price and want to estimate the sales tax and final total. For most ordinary taxable purchases in Idaho, use the 6.00% state sales tax rate.

Unlike local-heavy states, most Idaho cities do not add a normal city or county sales tax on top of the state rate. Boise, Meridian, Nampa, Idaho Falls, Pocatello, Caldwell, Coeur d'Alene, Twin Falls, Lewiston, and Rexburg generally use the 6.00% state rate for standard taxable retail purchases.

However, some Idaho resort cities have local option taxes. These local taxes may apply to selected categories such as lodging, restaurant food, alcohol by the drink, admissions, or other locally defined sales. If you are calculating tax for a resort city such as Sun Valley, Ketchum, McCall, Sandpoint, Driggs, Hailey, or Lava Hot Springs, verify the local option tax before using the calculator for business compliance.

How Idaho Sales Tax Works

Idaho has a statewide sales tax rate of 6.00%. The state use tax rate is also 6.00%. Sales tax generally applies to retail sales of tangible goods and selected taxable services unless a specific exemption applies.

For most shoppers, Idaho is easier to calculate than states with many local city and county tax layers. A normal taxable purchase in Boise, Meridian, Nampa, Idaho Falls, Pocatello, Caldwell, Coeur d'Alene, Twin Falls, Lewiston, or Rexburg usually uses the same 6.00% rate.

The important exception is Idaho's resort-city local option tax system. Some resort communities can adopt local taxes in addition to the state sales tax. These local taxes are voter-approved and can vary by city. A resort city may tax all items that are subject to Idaho sales tax, or it may limit the local tax to categories such as lodging, restaurant food, alcohol by the drink, event admissions, or other tourism-related sales.

Idaho also has use tax. Use tax applies when a buyer uses, stores, or consumes taxable goods in Idaho but did not pay at least 6.00% Idaho sales tax at the time of purchase. This often matters for online purchases, out-of-state purchases, mail-order purchases, or purchases made in another state and brought into Idaho.

Food is also an important Idaho-specific issue. Idaho generally taxes food at the sales tax rate, but eligible Idaho residents may claim a food tax credit on their income tax return. That makes Idaho different from states that simply exempt groceries at checkout.

For consumers, the calculator is simple for most purchases: use 6.00%. For businesses, the key is checking whether the sale is in a resort city, whether the item or service is taxable, whether shipping is separately stated, and whether the seller has Idaho nexus.

Idaho Sales Tax Formula

Idaho Sales Tax Examples

Example 1: $100 purchase in Idaho

Using Idaho's standard 6.00% rate:

Example 2: $250 purchase in Boise, Idaho

Using Idaho's standard 6.00% rate:

This same standard calculation usually applies in most large Idaho cities because they do not add normal local sales tax on top of the state rate.

Example 3: Reverse sales tax from an Idaho receipt

Suppose your Idaho receipt total is $106.00 and the rate was 6.00%:

Use this reverse calculation when the receipt shows only the final total and you want to estimate the original taxable price.

Major Idaho City Sales Tax Rates

Before deployment, verify each city rate against the Idaho State Tax Commission. Most large Idaho cities use 6.00%, but resort-city local option taxes and special district taxes should be checked separately.

Idaho Resort Cities and Local Option Tax Notes

Do not guess resort-city local option rates. Idaho resort cities can choose what categories are taxed, so lodging, restaurant food, alcohol by the drink, admissions, and general retail sales may not always receive identical treatment.

Why Sales Tax Usually Does Not Vary in Idaho

Idaho sales tax usually does not vary by city because the state sales tax rate is 6.00% and most local governments do not impose a normal local retail sales tax. This makes Idaho much simpler than states such as Colorado, Alabama, Arizona, or Arkansas.

For most users, the same 6.00% calculation works in Boise, Meridian, Nampa, Idaho Falls, Pocatello, Caldwell, Coeur d'Alene, Twin Falls, Lewiston, and Rexburg.

The exception is resort-city local option tax. Idaho allows certain resort cities to adopt local sales taxes if approved by voters. These cities may choose what is taxed, and many focus on tourism-related categories such as lodging, restaurant meals, alcohol by the drink, event admissions, or recreation-related purchases.

For consumers, the practical rule is: use 6.00% for most Idaho purchases, but check the local option tax if you are in a resort city. For businesses, the practical rule is stricter: verify the location, item category, and local city rules before collecting or filing.

What Is Taxable in Idaho

Online Purchases and Remote Sellers in Idaho

Online purchases delivered into Idaho may be subject to Idaho sales or use tax. If the seller does not collect at least 6.00% Idaho sales tax, the buyer may owe Idaho use tax on taxable goods used or stored in Idaho.

Out-of-state retailers without physical presence in Idaho must collect Idaho sales tax when their Idaho sales exceed $100,000 in the current or previous calendar year. Marketplace facilitators without physical presence in Idaho must also collect when the combined total of their own Idaho sales and third-party Idaho marketplace sales exceeds $100,000 in the current or previous year.

The correct rate for most Idaho online purchases is 6.00%. However, if the delivery address is in a resort city with a local option tax and the sale category is subject to that local tax, the seller should verify whether the local tax applies.

Plain-English example: if an ecommerce seller ships taxable products to Idaho customers and has more than $100,000 in Idaho sales during the current or previous year, it may need an Idaho seller's permit, may need to collect 6.00% Idaho sales tax, and should check resort-city local option rules for affected delivery addresses.

Common Idaho Sales Tax Mistakes

• Assuming every Idaho location is always exactly 6.00% without checking resort-city local option taxes.
• Treating Idaho like a local-heavy state when most large cities use the same 6.00% rate.
• Forgetting that Idaho taxes groceries but offers a food tax credit for eligible residents.
• Assuming food is exempt because many other states exempt groceries.
• Ignoring Idaho use tax on online or out-of-state purchases when less than 6.00% tax was paid.
• Treating digital books, videos, music, or games with permanent use rights as automatically exempt.
• Including separately stated direct-to-buyer shipping in the taxable price when it may be excluded.
• Forgetting the $100,000 remote seller and marketplace facilitator threshold.
• Using a generic ZIP-code calculator for resort communities without checking what the local option tax actually covers.

Idaho Sales Tax for Businesses

Businesses selling taxable goods or taxable services in Idaho may need an Idaho seller's permit. In general, sellers of goods or taxable services must collect sales tax, file sales and use tax returns, and send the collected tax to the Idaho State Tax Commission.

Most Idaho businesses collect the 6.00% state sales tax. However, businesses operating in resort cities should review local option tax rules. A resort city may tax all items subject to the state sales tax, or it may limit the local tax to categories such as lodging, restaurant meals, alcohol by the drink, or tourism-related sales.

Businesses should also understand Idaho use tax. If a business buys taxable goods for use in Idaho and the seller does not charge at least 6.00% Idaho tax, the business may owe use tax. This often applies to out-of-state purchases, equipment, supplies, online purchases, and items originally bought for resale but later used by the business.

Remote sellers should monitor the $100,000 Idaho sales threshold. Marketplace sellers should verify whether their marketplace facilitator is collecting Idaho tax and whether their direct sales create separate obligations.

Keep records of taxable sales, exempt sales, resale certificates, shipping charges, resort-city local option tax, marketplace sales, remote sales, use tax purchases, digital product sales, lodging transactions, and returns filed through Idaho's Taxpayer Access Point.

This calculator is useful for estimates, but businesses should verify exact obligations through the Idaho State Tax Commission, TAP, city local option tax pages, or a qualified tax professional.

Official Idaho Sales Tax Sources

Use these sources to verify Idaho sales tax data before deployment:

• Idaho State Tax Commission — Sales and Use Taxes Basics Guide
• Idaho State Tax Commission — City Sales Taxes / Local Option Taxes
• Idaho State Tax Commission — Online Sellers Guide
• Idaho State Tax Commission — Idaho Food Tax Credit
• Idaho State Tax Commission — Sales Tax Exemptions
• Idaho Taxpayer Access Point (TAP)
• Tax Foundation — 2026 State and Local Sales Tax Rates

Last reviewed: June 2026. Rates and rules can change. Verify with the Idaho State Tax Commission and any applicable resort city before filing, remitting, or making compliance decisions.