Reverse Sales Tax Calculator Illinois
Shopping in Illinois means paying at least 6.25% in state sales tax, with local taxes pushing the combined rate to an average of 8.74%. Enter your total to find the pre-tax price.
Illinois Sales Tax Overview
Illinois charges 6.25% state sales tax on most goods. Chicago's combined rate of 10.25% makes it one of the highest-taxed cities in the US for sales tax.
| Rate Type | Rate |
|---|---|
| Illinois State Rate | 6.25% |
| Average Local Rate | 2.49% |
| Average Combined Rate | 8.74% |
For official Illinois sales tax information, see the Illinois Department of Revenue.
Reverse Tax Formula for Illinois
To find the original price before Illinois sales tax, use this formula:
Original Price = Total ÷ (1 + 8.74 ÷ 100)
Original Price = Total ÷ 1.0874Example Calculations for Illinois
| Total Paid | Rate Used | Original Price | Tax Amount |
|---|---|---|---|
| $50.00 | 8.74% | $45.98 | $4.02 |
| $100.00 | 8.74% | $91.96 | $8.04 |
| $250.00 | 8.74% | $229.91 | $20.09 |
| $500.00 | 8.74% | $459.81 | $40.19 |
Sales Tax Rates by City in Illinois
Local cities and counties in Illinois charge additional taxes on top of the 6.25% state rate. Use a city-specific calculator for the most accurate pre-tax calculation.
Illinois Sales Tax – Common Questions
What is Chicago's combined sales tax rate?▼
Chicago's combined sales tax rate is 10.25%, one of the highest in the nation. This includes state (6.25%), Cook County (1.75%), Chicago city (1.25%), and Regional Transportation Authority (1%) taxes.
How do I reverse the sales tax in Illinois?▼
Divide the total price by 1.0625 (for the 6.25% state rate) or by the applicable combined rate for your city. For Chicago: divide by 1.1025.