Sales Tax Calculator
Quickly calculate sales tax on any purchase. Enter the price and tax rate to see the tax amount and total cost. Use common rate presets or enter a custom rate.
Understanding Sales Tax
Sales tax is a consumption tax imposed by state and local governments on the sale of goods and services. It is calculated as a percentage of the purchase price and collected by the seller at the point of sale. In 2024, sales taxes generated over $400 billion in revenue for state and local governments across the US, making it one of the largest sources of government funding.
Sales Tax Formulas
- Tax Amount = Pre-Tax Price x Tax Rate
- Total Price = Pre-Tax Price x (1 + Tax Rate)
- Pre-Tax Price = Total Price / (1 + Tax Rate)
- Tax Rate = Tax Amount / Pre-Tax Price
For example, a $100 item with 8.25% tax would have $8.25 in tax for a total of $108.25.
State Sales Tax Rates (2024)
- California: 7.25% (highest state rate)
- Indiana, Mississippi, Rhode Island, Tennessee: 7.00%
- Minnesota, Nevada, New Jersey: 6.625-6.85%
- Texas, Illinois: 6.25%
- New York: 4.00% (but combined rates reach 8.875% in NYC)
- Colorado: 2.90% (lowest non-zero state rate)
- Alaska, Delaware, Montana, New Hampshire, Oregon: 0%
Common Exemptions
Many states exempt essential items from sales tax. Groceries are exempt in about 30 states, prescription medications are exempt in all states, and some states exempt clothing (Pennsylvania, New Jersey, Minnesota). Several states hold annual sales tax holidays, typically in August for back-to-school shopping, where certain items are temporarily exempt.
Practical Tips
- Always check the combined state + local rate for your specific city or county
- Keep receipts for large purchases, especially for business expense tracking
- If shopping online, sales tax is typically charged based on the delivery address
- Look for sales tax holidays in your state for savings on qualifying purchases
- When budgeting, factor in sales tax to avoid underestimating the true cost of purchases