What Is Sales Tax and How Does It Work?
Sales tax is a consumption tax imposed by the government on the sale of goods and services. It is collected by the retailer at the point of sale and passed on to the government. Sales tax rates vary by state, county, and city, making it important to know the rate that applies to your purchase.
The Basic Sales Tax Formula
The formula for calculating sales tax is straightforward:
To find the total price including tax:
Or combined:
How to Calculate Sales Tax Step by Step
Step 1: Determine the Item Price
Start with the pre-tax price of the item or service. This is the price listed before any taxes are applied.
Step 2: Find the Applicable Tax Rate
Sales tax rates vary by location. In the United States:
- State sales tax ranges from 0% to 7.25%
- Local sales tax can add 0% to 5% or more
- Combined rates typically range from 4% to 10%
Step 3: Convert the Tax Rate to Decimal
Divide the tax rate by 100 to convert it to a decimal:
- 7.25% becomes 0.0725
- 5.5% becomes 0.055
- 8.0% becomes 0.080
Step 4: Calculate the Sales Tax Amount
Multiply the item price by the tax rate in decimal form:
Step 5: Calculate the Total Price
Add the sales tax to the original item price:
Sales Tax Rates by State
| State | State Tax Rate | Combined Range |
|---|---|---|
| Alabama | 4.0% | 5.0% - 11.0% |
| Arizona | 5.6% | 5.6% - 11.2% |
| Arkansas | 6.5% | 6.5% - 11.625% |
| California | 7.25% | 7.25% - 10.75% |
| Colorado | 2.9% | 2.9% - 11.2% |
| Connecticut | 6.35% | 6.35% |
| Delaware | 0.0% | 0.0% |
| Florida | 6.0% | 6.0% - 8.0% |
| Georgia | 4.0% | 4.0% - 8.9% |
| Hawaii | 4.0% | 4.0% - 4.5% |
| Idaho | 6.0% | 6.0% - 8.5% |
| Illinois | 6.25% | 6.25% - 11.0% |
| Indiana | 7.0% | 7.0% |
| Iowa | 6.0% | 6.0% - 8.0% |
| Kansas | 6.5% | 6.5% - 10.6% |
| Kentucky | 6.0% | 6.0% |
| Louisiana | 4.45% | 4.45% - 11.45% |
| Maine | 5.5% | 5.5% |
| Maryland | 6.0% | 6.0% |
| Massachusetts | 6.25% | 6.25% |
| Michigan | 6.0% | 6.0% |
| Minnesota | 6.875% | 6.875% - 9.875% |
| Mississippi | 7.0% | 7.0% - 8.0% |
| Missouri | 4.225% | 4.225% - 10.35% |
| Montana | 0.0% | 0.0% |
| Nebraska | 5.5% | 5.5% - 7.5% |
| Nevada | 6.85% | 6.85% - 8.375% |
| New Hampshire | 0.0% | 0.0% |
| New Jersey | 6.625% | 6.625% |
| New Mexico | 5.125% | 5.125% - 9.0% |
| New York | 4.0% | 4.0% - 8.875% |
| North Carolina | 4.75% | 4.75% - 7.5% |
| North Dakota | 5.0% | 5.0% - 8.0% |
| Ohio | 5.75% | 5.75% - 8.0% |
| Oklahoma | 4.5% | 4.5% - 11.0% |
| Oregon | 0.0% | 0.0% |
| Pennsylvania | 6.0% | 6.0% - 8.0% |
| Rhode Island | 7.0% | 7.0% |
| South Carolina | 6.0% | 6.0% - 9.0% |
| South Dakota | 4.5% | 4.5% - 6.0% |
| Tennessee | 7.0% | 7.0% - 9.75% |
| Texas | 6.25% | 6.25% - 8.25% |
| Utah | 6.1% | 6.1% - 9.05% |
| Vermont | 6.0% | 6.0% - 7.0% |
| Virginia | 5.3% | 5.3% - 7.0% |
| Washington | 6.5% | 6.5% - 10.5% |
| West Virginia | 6.0% | 6.0% - 7.0% |
| Wisconsin | 5.0% | 5.0% - 5.6% |
| Wyoming | 4.0% | 4.0% - 6.0% |
Common Sales Tax Exemptions
Not all purchases are subject to sales tax. Common exemptions include:
Groceries
Many states exempt unprepared food items from sales tax. However, prepared foods, restaurant meals, and hot foods are typically taxable.
Clothing
Some states exempt clothing from sales tax, especially during back-to-school shopping periods. States with clothing exemptions include:
- Massachusetts (items under $175)
- Minnesota
- New Jersey
- New York (items under $110)
- Pennsylvania
- Rhode Island
Prescription Medications
Prescription drugs are exempt from sales tax in all states.
Nonprofit Organizations
Purchases made by qualified nonprofit organizations are often exempt from sales tax.
Sales Tax vs. VAT: Key Differences
| Feature | Sales Tax | VAT (Value Added Tax) |
|---|---|---|
| Where applied | Only at final sale to consumer | At each stage of production |
| Who pays | End consumer | End consumer |
| Visibility | Added at checkout | Usually included in price |
| Common in | United States | Europe, Canada, Australia |
| Rate range | 0% - 10%+ | 5% - 27% |
Tips for Calculating Sales Tax
- Check the current rate: Tax rates can change, so always verify the current rate for your location
- Include local taxes: Remember to add city and county taxes to the state rate
- Watch for tax-free periods: Many states offer tax-free weekends for back-to-school shopping
- Online purchases: Many states now require online retailers to collect sales tax
- Keep receipts: Save receipts for tax-deductible purchases or expense reports
Frequently Asked Questions
How do I calculate sales tax backwards?
To find the pre-tax price from a total that includes tax:
For example, if you paid $107.25 total with a 7.25% tax rate:
What states have no sales tax?
Five states have no state sales tax:
- Alaska (though local taxes may apply)
- Delaware
- Montana (though local taxes may apply in some areas)
- New Hampshire
- Oregon
Is sales tax the same in every state?
No, sales tax rates vary significantly by state, and many cities and counties add additional local taxes on top of the state rate.
Do I pay sales tax on online purchases?
In most cases, yes. Following the 2018 Supreme Court decision in South Dakota v. Wayfair, most states now require online retailers to collect sales tax.