Rates verified January 2026 · Source: Idaho Dept. of Revenue

Idaho Sales Tax Calculator 2026

Flat 6% statewide · no county additions · Boise, Nampa, Meridian all same rate

Idaho has a flat 6% state sales tax with no county or city additions. The rate is the same everywhere in Idaho. Idaho taxes groceries at the full 6% rate but provides a grocery tax credit to residents on their state income tax return.

State guide Shipping rules Grocery tax Reverse formula

Quick answer

Use 6% as the starting Idaho sales tax rate.

The calculator below lets you add tax to a price or remove tax from a receipt total. Pick a city when available, or type the exact local rate from the official source.

State base rate

Average combined

6.02%

Boise rate

6% combined

Calculator

City (optional — fills rate)

Sales tax rate — type any % (editable)

Change this anytime — no extra click. Verify final rates with your state or country tax authority.

Amount before tax

Quick amounts

Enter an amount to see the result.

Educational tool only — not tax advice. Confirm rates before filing or pricing for customers.

Idaho combined rates by city — 2026 reference

Boise
Ada County · State 6% only — no local additions in Idaho
6%
Nampa
Canyon County · State 6% only
6%
Meridian
Ada County · State 6% only
6%
Idaho Falls
Bonneville County · State 6% only
6%
Pocatello
Bannock County · State 6% only
6%
Coeur d'Alene
Kootenai County · State 6% only
6%
Twin Falls
Twin Falls County · State 6% only
6%
Caldwell
Canyon County · State 6% only
6%

ZIP and district rules can differ. Verify on Idaho Dept. of Revenue.

Formula

How to calculate Idaho sales tax

Multiply the taxable price by the combined state and local rate. Then add the tax amount to the original price to get the final checkout total.

Sales tax formula

Sales tax = item price x (rate / 100)

Final total = item price + sales tax

Enter the item price before tax.
Use the city rate above or type the exact local rate from the official source.
Calculate the sales tax amount and final total instantly.

Example	Formula	Tax	Total
$100 purchase in Boise	$100.00 x 6%	$6.00	$106.00
$250 purchase in Nampa	$250.00 x 6%	$15.00	$265.00
Reverse tax from $106 in Boise	$106 ÷ 1.06000 ≈ $100.00 pre-tax; about $6.00 was sales tax.	$100.00 before tax	$100.00 before tax

Idaho sales tax examples

Common receipt calculations using high-search city rates.

$100 purchase in Boise

$106 total

$100.00 × 6% = $6.00 sales tax in Boise, Idaho.

$250 purchase in Nampa

$265 total

$250.00 × 6% = $15.00 sales tax in Nampa, Idaho.

Reverse tax from $106 in Boise

$100.00 before tax

$106 ÷ 1.06000 ≈ $100.00 pre-tax; about $6.00 was sales tax.

State rate: 6%

Avg combined: 6.02%

Economic nexus: $100,000 in sales OR 200 transactions in Idaho

Filing: Monthly, Quarterly, or Annual

Idaho Sales Tax

Idaho applies a flat 6% sales tax statewide with no county or local additions. The rate is identical everywhere in Idaho. Idaho taxes groceries at the full 6% rate, but resident taxpayers can claim an annual grocery tax credit on their income tax return to recover some of this cost.

Idaho combined rates by city

Combined rates vary across Idaho. Reference cities on this page include: Boise (6%), Nampa (6%), Meridian (6%), Idaho Falls (6%), Pocatello (6%), Coeur d'Alene (6%). ZIP codes and special districts can differ — use the official lookup linked above for address-level filing.

Common exemptions in Idaho

Common exemptions include: Prescription drugs; Medical equipment; Agricultural items. Restaurant meals, prepared food, and many services are often taxable even when groceries are exempt.

Online sellers and economic nexus

Out-of-state sellers that exceed $100,000 in sales OR 200 transactions in Idaho in Idaho generally must register and collect tax on taxable sales delivered into the state. Marketplace facilitators often remit tax on behalf of third-party sellers.

How to use this calculator

Pick a city from the list or type the combined percentage from your ID tax lookup. Enter a pre-tax amount to add sales tax, or use reverse mode to split tax from a receipt total. Businesses should validate address-level rates in certified tax software before filing returns.

Often taxable in Idaho

General merchandise
Electronics
Clothing
Restaurant meals
Groceries (taxed at 6%)

Common exemptions

Prescription drugs
Medical equipment
Agricultural items

Common mistakes to avoid

Using only the state rate

Idaho's 6% state rate is only the starting point. Boise is 6% combined.

Subtracting tax from a gross total

To reverse sales tax, divide by 1 + (rate ÷ 100). Do not subtract the percentage from the tax-inclusive price.

Treating groceries and clothing the same

Exemptions differ by item. Review Idaho rules for food, apparel, medicine, and digital goods before invoicing.

Quoting the average rate for every address

The 6.02% average is useful for estimates; use address-level rates for compliance and customer quotes.

Official Idaho sales tax source

Rates and rules on this page were last reviewed in January 2026 against Idaho Dept. of Revenue. Use the linked authority for filing, registrations, or address-specific compliance.

Rates on this page were compared to Idaho official Department of Revenue publications as of January 2026.
Boise is listed at 6% combined (State 6% only — no local additions in Idaho). Confirm ZIP-level rates before filing.
Destination-based rules usually apply to shipped orders — use the delivery address rate, not the seller's warehouse rate, unless official guidance says otherwise.

Idaho sales tax — frequently asked questions

What is the Idaho sales tax rate in 2026?

Idaho has a flat 6% statewide rate with no county or city additions.

Does Idaho tax groceries?

Yes. Idaho taxes groceries at the full 6% rate. However, Idaho residents can claim a grocery tax credit on their annual state income tax return to partially offset this.

What is the sales tax rate in Boise, ID?

Boise uses about 6% combined sales tax (State 6% only — no local additions in Idaho). Always verify the current rate for your exact address.

Is clothing taxable in Idaho?

Clothing and footwear are generally taxable in Idaho at the combined state and local rate unless a specific exemption applies.

Does Idaho charge sales tax on online purchases?

Remote sellers and marketplaces that exceed Idaho's economic nexus threshold ($100,000 in sales OR 200 transactions in Idaho) generally must collect Idaho sales tax based on the delivery address.

How do I reverse Idaho sales tax from a receipt total?

Divide the tax-inclusive total by 1 plus the combined rate as a decimal. At 6.02% combined: $108 ÷ 1.08 ≈ $100 before tax.

Is shipping taxable in Idaho?

Rules differ by state. See our shipping tax calculator and Idaho Department of Revenue guidance to learn whether delivery, freight, and handling are taxable on your order.

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Use the correct Idaho sales tax rate

Use this page for quick Idaho sales tax estimates, receipt checks, and reverse tax calculations. For the most accurate result, choose the closest city rate or verify the exact address-level rate with the official source, then enter that percentage in the calculator.

Open all-state calculator

Disclaimer: Rates are for informational and educational purposes and may be incomplete or outdated. Always verify with the official Idaho revenue authority or a qualified professional before filing or making business decisions.