Reverse Sales Tax Calculator Chicago, IL
In Chicago, you're paying 10.25% combined sales tax on most purchases. Reverse that tax with this calculator to see what the item actually cost before tax.
Chicago Sales Tax Rate Details
The 10.25% combined rate in Chicago breaks down as follows:
| Tax Component | Rate |
|---|---|
| Illinois State Sales Tax | 6.25% |
| Local / County Tax (Cook County) | 4% |
| Total Combined Rate | 10.25% |
For authoritative Illinois tax rate information, see the Illinois Department of Revenue.
Reverse Tax Formula for Chicago
To find the pre-tax price on any Chicago purchase, divide the total by 1.1025:
Original Price = Total ÷ 1.1025
Example: $110.25 ÷ 1.1025 = $100.00Example Calculations — Chicago
| Total Paid | Original Price | Tax Amount |
|---|---|---|
| $50.00 | $45.35 | $4.65 |
| $100.00 | $90.70 | $9.30 |
| $250.00 | $226.76 | $23.24 |
| $500.00 | $453.51 | $46.49 |
When to Use the Chicago Rate
Use 10.25% when you're making a purchase within Chicago city limits. Purchases made just outside the city may fall under a different county rate. When in doubt, check your receipt—the tax rate is usually printed there.
If you're calculating tax for an online purchase shipped to Chicago, the seller may be required to collect Illinois sales tax at the applicable local rate.
Chicago Sales Tax – Common Questions
What is the sales tax rate in Chicago?▼
Chicago's combined sales tax rate is 10.25%, which includes Illinois's 6.25% state tax plus 4% in local taxes.
How do I calculate the original price before tax in Chicago?▼
Divide the total by 1.1025. For example: if you paid $110.25, the original pre-tax price was $100.00.
How much sales tax would I pay on a $100 purchase in Chicago?▼
On a $100 pre-tax purchase in Chicago, you'd pay $10.25 in sales tax, for a total of $110.25.
Can I reverse sales tax for Chicago using just the rate?▼
Yes. The reverse sales tax formula is: Original Price = Total ÷ (1 + 10.25/100). Our calculator above does this automatically.