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Sales Tax Calculator

Enter any price and tax rate to add sales tax or find the final price. Use the reverse calculator to find the pre-tax price from a tax-inclusive total. All 50 US state rates are built in, and the multi-item tab calculates tax on multiple products with different rates at once.

Sales Tax Calculator

🛍️ Multi-Item Sales Tax Calculator

Add multiple items and calculate total tax at once.

🗺️ US State Sales Tax Rates

Click any state to use its rate in the calculator.

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StateState RateAvg Combined (with local)Notes

* Combined rates include average local/county taxes. Actual local rates vary by city. Source: Tax Foundation 2024.

Sales Tax Formulas

Add Tax to Price (Tax-Exclusive)

Tax Amount = Price × (Tax Rate / 100)
Final Price = Price + Tax Amount
Final Price = Price × (1 + Tax Rate / 100)

Example: $100 item, 8.5% tax
Tax = $100 × 0.085 = $8.50
Total = $100 + $8.50 = $108.50

Remove Tax from Price (Tax-Inclusive / Reverse)

Given a price that ALREADY includes tax, find the original price and tax amount.

Pre-Tax Price = Final Price / (1 + Tax Rate / 100)
Tax Amount = Final Price − Pre-Tax Price

Example: $108.50 total, 8.5% tax
Pre-Tax = $108.50 / 1.085 = $100.00
Tax = $108.50 − $100.00 = $8.50

Find Tax Rate

Tax Rate = (Tax Amount / Pre-Tax Price) × 100
OR
Tax Rate = ((Final Price / Pre-Tax Price) − 1) × 100

Example: Paid $108.50, item was $100
Tax Rate = (8.50 / 100) × 100 = 8.5%

Multi-Item with Different Tax Categories

Some items may be tax-exempt or taxed differently:
Food (groceries): often exempt or reduced rate
Clothing under $110: exempt in some states (NY, PA)
Digital goods: taxed differently state by state
Prescription drugs: usually exempt

Total Tax = Σ (taxable_item_price × applicable_rate)

Frequently Asked Questions

Sales tax is a consumption tax imposed by state and local governments on goods and services at the point of sale. The seller collects it from the buyer and remits it to the government. Formula: Tax = Price × Rate ÷ 100. Final price = Price × (1 + Rate ÷ 100). Example: $100 item at 8.5% tax. Tax = $8.50. Final = $108.50. Rates vary by state, county, and city - the combined rate can be significantly higher than the state-only rate.
To find the pre-tax price from a tax-inclusive total: Pre-tax = Total ÷ (1 + Rate ÷ 100). Example: paid $108.50 total with 8.5% tax. Pre-tax = $108.50 ÷ 1.085 = $100. Tax = $108.50 − $100 = $8.50. Common mistake: multiplying $108.50 × 0.085 = $9.22 (wrong). This calculates 8.5% of the total - but tax was added to the base price, not the total price. Always divide, never multiply the total by the rate.
Five states (NOMAD): Oregon, Montana, New Hampshire, Delaware, and Alaska have no state-level sales tax. However, Alaska allows local municipalities to levy their own sales taxes - some Alaskan cities charge 5–7%+. Oregon, Montana, New Hampshire, and Delaware have no local sales taxes either, making purchases there completely tax-free. These states rely more heavily on income tax, property tax, and other revenue sources.
States set a base sales tax rate, but counties, cities, and special tax districts add their own taxes on top. California's state rate is 7.25%, but Los Angeles adds local taxes bringing the combined rate to approximately 10.25%. Different neighborhoods can have different combined rates. Additionally, states tax different categories differently - groceries may be taxed in one state and exempt in another, clothing may be taxed at a different rate, etc. The combined rate at any specific address can be complex to determine exactly.
Sales tax (USA): collected only at final retail sale. Seller adds tax, consumer pays full burden. No mechanism to reclaim. Businesses buying for resale typically don't pay sales tax (use resale certificate). VAT (Europe, India/GST, Canada): collected at each stage of production. Each business charges VAT on sales and can reclaim VAT paid on inputs (input tax credit). End consumer bears the full tax, but pyramiding is avoided. VAT typically collects more revenue per percentage point and is harder to evade.
It depends on the state. Prescription drugs: exempt in nearly all US states. Over-the-counter medications: varies - many states tax these. Groceries (food for home consumption): most states exempt basic groceries. Exceptions: Tennessee taxes groceries at a reduced 4% rate. Kansas taxes groceries at 4%. Mississippi, South Dakota, and a few others tax groceries at the full rate. Check your state's revenue department for the exact list of exempt categories.
Combined rate = State rate + Average local rate (county + city + special districts). Example: California state rate = 7.25%. Los Angeles city combined = approximately 10.25% (7.25% + 3% local). This 3% difference is significant on large purchases. Rates can vary even within the same city if a purchase crosses a special tax district boundary. For exact rates, use the store's ZIP code - most states have online rate lookup tools on their department of revenue website.
After the US Supreme Court's 2018 South Dakota v. Wayfair decision, online sellers meeting certain thresholds (usually $100,000 in sales or 200 transactions per year in a state) must collect sales tax in all states where they have 'economic nexus' - not just where they have physical presence. Practically: major retailers (Amazon, Walmart, Best Buy) collect your state's sales tax on online purchases. Smaller sellers may not - technically you may owe 'use tax' to your state for untaxed online purchases, though this is rarely enforced for individuals.

States with No Sales Tax

Highest State Rates

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Sales Tax Calculator - How US Sales Tax Works and Why Rates Vary by Location

Unlike most countries that use a national VAT (Value Added Tax) with uniform rates, the United States has a fragmented sales tax system with thousands of separate taxing jurisdictions - states, counties, cities, and special districts. This makes sales tax calculations more complex than most people expect, and means the rate you pay depends not just on the state but often on the exact street address of the purchase.

The two formulas: Adding tax: Final = Price × (1 + Rate ÷ 100). $80 at 8.5% = $80 × 1.085 = $86.80. Removing tax (reverse): Pre-tax = Total ÷ (1 + Rate ÷ 100). $86.80 ÷ 1.085 = $80.00. The most common mistake: calculating 8.5% of $86.80 = $7.38 (wrong). The correct tax on $80 = $6.80.

US Sales Tax Landscape - Rates by Category

States with No Sales Tax (NOMAD)

  • Oregon: 0% - no state or local sales tax
  • Montana: 0% - no state or local sales tax
  • New Hampshire: 0% - no state or local sales tax
  • Delaware: 0% - no state or local sales tax
  • Alaska: 0% state, but local municipalities can charge up to 7%+
  • These five states fund government through income tax, property tax, and other means

Highest Combined Rates (2025)

  • Louisiana: up to 11.45% combined (Baton Rouge area)
  • Tennessee: 9.55% average combined
  • Arkansas: 9.46% average combined
  • Washington: up to 10.4% in some cities
  • California: 7.25% state + up to 3% local = up to 10.25%
  • Rates are updated frequently - verify at your state's revenue department

What Is and Isn't Taxed - Common Exemptions

Sales tax is not applied uniformly to all products. Most states exempt certain categories, though the specifics vary significantly by state:

  • Groceries (food for home consumption): Most states exempt basic groceries, though some tax them at a reduced rate. Tennessee and Kansas tax groceries but at lower rates.
  • Prescription drugs: Exempt in nearly all states - generally considered a health necessity.
  • Over-the-counter medications: Varies widely - many states tax these despite exempting prescriptions.
  • Clothing: Most states tax clothing, but some (New York, Pennsylvania, New Jersey) exempt most clothing items under certain price thresholds.
  • Digital goods and services: Rapidly evolving area. Many states now tax streaming services (Netflix, Spotify), digital downloads, and cloud software.
  • Services: Historically not taxed, but an increasing number of states now tax certain services - haircuts, gym memberships, and professional services in some jurisdictions.

Sales Tax vs VAT - Key Structural Difference

The US sales tax is collected only at the final point of sale to the end consumer. The seller adds tax to the price, collects it from the buyer, and remits it to the state. The consumer bears the full tax burden, and there's no mechanism to reclaim it.

VAT (used in Europe, India via GST, Canada via GST/HST) is collected at each stage of production. Each business in the chain pays VAT on their purchases and charges VAT on their sales - but can reclaim the VAT they paid (input tax credit). The end consumer ultimately bears the cost, but the system prevents "tax on tax" pyramiding. VAT is generally harder to evade and collects more revenue per percentage point than sales tax.

How this calculator works, and where the numbers come from

The Sales Tax Calculator applies the standard formula for this calculation to the values you enter and updates the result as you type. The calculation itself happens in your browser, and the page explains the method so you can check any result by hand.

Please note: Tax rules change and depend on your personal situation. Results are estimates, not tax advice. Confirm current rates and rules with the official tax authority or a qualified tax professional.

Sources and further reading

Learn more

Read our guide: Percentage Traps: Markup vs Margin, Stacked Discounts and More

Last reviewed: by the CalcQube Editorial Team. See our editorial policy for how we build and check calculators, or report an error.