Add sales tax to any price, reverse-calculate the pre-tax amount from a total, or compare all 50 US state rates. Supports multi-item carts with taxable and non-taxable items.
Calculate the total price including sales tax. Formula: Total = Price x (1 + Tax Rate). Example: A $100 purchase with 8.5% tax totals $108.50. Tax rates vary by state from 0% (Oregon) to 9.55% (Louisiana).
Enter an amount and tax rate to see results
Sales tax is a consumption tax imposed by state and local governments on the sale of goods and certain services. Unlike income tax, which is based on earnings, sales tax is collected at the point of purchase and passed directly to consumers. According to the Tax Foundation, sales taxes are the largest source of state tax revenue in 23 states, accounting for approximately one-third of all state tax collections nationwide.
The complexity of sales tax in the United States stems from its decentralized nature. There is no federal sales tax, unlike many other countries. Instead, 45 states plus Washington D.C. impose their own state sales taxes, and over 10,000 local jurisdictions add additional local taxes on top. This creates what tax professionals call the "patchwork" of sales tax rates, where the total rate you pay depends entirely on where you make your purchase.
For businesses, managing sales tax compliance has become increasingly complex, especially with the rise of e-commerce. The 2018 Supreme Court decision in South Dakota v. Wayfair established that states can require out-of-state sellers to collect sales tax based on "economic nexus" - meaning sales volume or transaction count - rather than physical presence. This ruling fundamentally changed e-commerce taxation and made product pricing decisions more complex for online sellers operating across state lines. When setting prices, always model the margin after tax to ensure you are not accidentally compressing profitability at checkout.
Consumers benefit from understanding sales tax for budgeting purposes. A high-ticket purchase like a car, appliance, or electronics can incur significant tax liability. For example, a $30,000 vehicle in a state with a combined 10% sales tax rate costs an additional $3,000 in tax alone. This is why many consumers make large purchases in neighboring states with lower rates, though use tax laws technically require reporting these purchases.
Tax Amount = Pre-Tax Price x (Tax Rate / 100)
Total Price = Pre-Tax Price + Tax Amount
Or combined:
Total Price = Pre-Tax Price x (1 + Tax Rate / 100)
Pre-Tax Amount = Total Price / (1 + Tax Rate / 100)
Tax Amount = Total Price - Pre-Tax Amount
Use this when you have a receipt showing the total and need to determine the tax breakdown.
The base price of goods or services before any sales tax is applied. This is what the seller receives before remitting tax to the government. In tax-exclusive pricing (common in the US), this is the listed shelf price.
The combined percentage of state and local sales tax. In the US, this typically ranges from 0% to 10.25%. Always verify the exact rate for your specific location, as rates can vary by city, county, and special taxing districts within the same state.
The dollar value of tax charged on the transaction. This amount is collected by the seller and remitted to state and local tax authorities, typically on a monthly or quarterly basis depending on sales volume.
The final amount the customer pays, including both the pre-tax price and all applicable taxes. This is what appears on your credit card statement or receipt as the transaction total.
Both are consumption taxes, but they work very differently. Understanding the distinction is important for international business and travel.
In the US (sales tax), a price tag showing $100 means you pay $100 plus tax at checkout. In Europe (VAT), a price tag showing 100 euros means you pay exactly 100 euros - tax is already included. This is why American tourists are sometimes surprised when the final bill matches the menu price in European restaurants. Use our reverse calculation feature to extract the tax component from VAT-inclusive prices.
You are buying electronics at a store in Los Angeles County. The listed price is $599 for a tablet. Los Angeles has a combined sales tax rate of 9.5%.
If you had made the same purchase in Oregon (0% sales tax), you would save $56.91. This is why some consumers travel to no-sales-tax states for major purchases.
Your restaurant bill shows a total of $86.40 including 8% sales tax. You want to know the subtotal for food to calculate the proper tip amount (before tax).
Tipping on the pre-tax amount ($16.00) vs. the total ($17.28) saves $1.28. For expensive meals, this difference adds up significantly.
At a grocery store in Pennsylvania (6% state tax), you buy both taxable and exempt items. Groceries are tax-exempt, but prepared food and paper products are taxable.
Notice how the effective tax rate on the entire purchase is only 1.8% ($1.20 / $65.00) because most items were exempt. Use our multi-item calculator to handle complex receipts.
While this calculator provides accurate basic sales tax calculations, there are important limitations to understand for real-world tax compliance.
Tax rates can change frequently. The state rates shown are averages and may not reflect your exact location. Special taxing districts (transit, stadium, tourism) can add additional percentages. Always verify current rates with your state Department of Revenue.
This calculator does not account for product-specific exemptions. Many states exempt groceries, prescription drugs, clothing, or certain services. These exemptions vary widely by state and product category.
Many states offer "tax holidays" during back-to-school or emergency preparedness periods when certain items are temporarily exempt. This calculator does not track these temporary exemptions.
Businesses may qualify for exemptions on purchases made for resale, manufacturing, or certain business uses. This calculator is designed for consumer transactions and does not handle B2B exemption scenarios.
This calculator focuses on US sales tax. It does not handle VAT calculations for international purchases, import duties, or cross-border tax scenarios. See our accounting tools for additional tax and financial calculators.
For more guidance, see the Valuefy blog.
Pair this tool with the Sales Commission Calculator and the Sales Quota Calculator to cross-check inputs. For strategic context, read our founder's LOI negotiation guide and explore the Sales & Compensation tools hub.
Sales tax is calculated by multiplying the pre-tax price by the tax rate. Use the formula: Total = Price x (1 + Rate/100) for quick calculations.
To extract tax from a total, divide by (1 + Rate/100). This reverse calculation is essential for analyzing receipts and calculating tips on pre-tax amounts.
Five US states have no sales tax: Alaska, Delaware, Montana, New Hampshire, and Oregon. Combined state and local rates can exceed 10% in some jurisdictions.
Many common items are exempt from sales tax depending on your state, including groceries, prescription medications, and sometimes clothing. For product-based businesses, verify your cost basis before applying tax to ensure pricing remains accurate.
Sales tax differs from VAT: US sales tax is added at checkout (exclusive), while VAT is included in the displayed price (inclusive). Both are consumption taxes.
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