Sales Tax Calculator — Overview
Sales tax is a consumption tax imposed on the sale of goods and services. Unlike income tax (federal), sales tax varies by state and sometimes by county. This calculator helps you instantly determine the total tax amount and final price you'll pay.
Key Facts:**
Sales tax rates vary 0–10.75% depending on location
Five states have no sales tax (Oregon, Montana, New Hampshire, Delaware, Alaska)
Some items are tax-exempt (groceries, prescription medications)
Tax is calculated on subtotal before final price is shown
Why Use This Calculator:**
Budgeting expenses, online shopping comparison, retail price verification, business planning, invoice preparation, and financial forecasting.
Sales Tax Calculator Tool
Sales Tax Formula & Calculation
Total Price = Subtotal + Sales Tax
Item: $100 item, 7% tax rate
Sales Tax = $100 × 0.07 = $7.00
Total Price = $100 + $7 = $107.00
Tax Rate = (Sales Tax ÷ Subtotal) × 100
US Sales Tax Rates by State (2024)
No Sales Tax States (5):**
Alaska, Delaware, Montana, New Hampshire, Oregon
These five states do not collect sales tax. However, Alaska allows local jurisdictions to impose sales tax (averages 1.19%). Overall most tax-free shopping, but some cities/regions vary.
Tax-Exempt Items & Special Cases
Exempt in Most States:**
Groceries (unprepared food), prescription medications, medical devices, newspapers, most clothing (varies by state), agricultural products, certain services.
Taxable in All States:**
Prepared/restaurant food, alcohol, tobacco, non-prescription drugs, luxury items, services (haircuts, repairs).
State Variations:**
Illinois taxes groceries and candy differently. New York taxes clothing under $110 as exempt but $110+ is taxable. Some states exempt feminine hygiene products. Educational materials exempt in some states. Always verify state-specific rules.
Business Resale:**
Businesses with resale certificates can purchase items wholesale without paying sales tax. They pay tax only when selling to end consumer. Requires valid resale permit/certificate.
Online Shopping & Sales Tax
National Online Retailers:**
As of 2021, major online sellers (Amazon, Walmart, Target, etc.) collect and remit sales tax in all states where they have "nexus" (warehouses, distribution centers, or significant sales). This means online purchases typically include sales tax charged at the destination state's rate.
Marketplace Sellers:**
Third-party sellers on platforms like Amazon Marketplace may or may not collect sales tax depending on state laws and seller setup. Always check before purchase if tax is included.
International Orders:**
Imports often have different tax treatment. Customs duties, import taxes, and handling fees may apply. International retailers may not be required to collect sales tax.
Digital Products:**
Software, e-books, streaming services—tax treatment varies dramatically by state. Some states tax all digital goods; others don't tax any. Colorado, New Mexico, and North Carolina have unique digital tax rules.
Business Purchases:**
With proper documentation (resale certificate or business tax ID), business purchases may be exempt from sales tax. Wholesale purchases typically aren't taxed.
Using Sales Tax Calculator for Budgeting
Frequently Asked Questions
Q: Why doesn't the calculator show county tax?
County and local taxes add complexity. California's state rate is 5.5%, but some counties add 1–2.5% local tax (total up to 10.75%). This calculator shows state rates; add your local county rate via custom slider.
Q: Is sales tax the same everywhere in one state?
No. State rate is base, but counties and municipalities add local tax. $100 in Los Angeles (5.5% state + 2.25% local) = $107.75, while $100 in San Francisco (5.5% + 1.25%) = $106.75. Same item, different tax by location.
Q: Do I pay sales tax when ordering online from out-of-state?
Yes (as of 2021). Retailers with nexus in your state must collect and remit sales tax. Tax charged based on destination address. Remote sellers without physical presence may not collect, but you technically owe use tax (self-assessed).
Q: Why do some groceries have tax and others don't?
States vary. Most exempt unprepared food (raw groceries). But prepared food (deli, hot bar, fast food) is taxable. Illinois taxes candy and soda even though "groceries" are exempt. Check state rules for specifics.
Q: Can I get a refund on sales tax paid?
Generally no. Sales tax is final. However, some countries (not US) offer VAT refunds for tourists. In the US, resale certificates allow businesses to buy untaxed. If wrongly charged, file complaint with state tax authority.
Q: How do businesses collect and remit sales tax?
Businesses collect tax at point of sale, hold it, and remit to state/county monthly, quarterly, or annually depending on volume. If you're a small business, register with your state tax authority for a sales tax permit.