Dekalb, Illinois sales tax rate: 8%
Last updated Checked monthly
The sales tax rate in Dekalb, Illinois is 8%. That’s the 6.25% state rate plus 1.75% in local taxes. It’s higher than 175 of the 331 Illinois cities we checked, and 8 other cities pay the same.
Calculated by the 
Sales Tax APIThe same engine Zamp customers use.Dekalb combined rate
8%
- Illinois state
- 6.25%
- DekalbCity
- 1.75%
Dekalb sales tax calculator
Enter a price and what you’re selling.
- IllinoisState · 6.25%$6.25
- Dekalb City (Dekalb County)City · 1.75%$1.75
Charging this at checkout? Zamp calculates it on every order and files the returns.
Book a demoDekalb sales tax rate breakdown
State and city taxes add up to 8%.
| Jurisdiction | Type | Rate |
|---|---|---|
| State of Illinois | State | 6.25% |
| Dekalb City (Dekalb County) | City | 1.75% |
| Combined rate | 8% |
Rate history
- July 20238%
- July 20248%
- July 20258%
- July 20268%
- Today8%
No change since July 2023.
Sales tax near Dekalb
Closest cities
- Kirkland12 mi7.25%
- Hillcrest16 mi6.75%
- Plano20 mi7.25%
- Geneva22 mi8.25%
- North Aurora22 mi8.25%
- Elgin23 mi8.75%
- Cherry Valley24 mi8.75%
- Montgomery25 mi8.25%
Elsewhere in DeKalb County
- Kirkland7.25%
Charge the right rate in Dekalb, on every order.
Zamp calculates tax at each customer’s address, then files and pays every Illinois return for you, with a sales tax team you can call.
Dekalb sales tax questions.
Still have questions? Call us at 1-866-438-9267 or email us at support@zamp.com.
What is the sales tax rate in Dekalb, Illinois?
The combined sales tax rate in Dekalb is 8% as of November 2, 2026. It’s made up of 6.25% Illinois state tax, 1.75% Dekalb City (Dekalb County).
Does the sales tax rate vary within Dekalb?
Dekalb has no special-district taxes, so most addresses in the city pay the same 8%: Illinois’s 6.25% plus 1.75% city tax. This rate was calculated for Dekalb’s 60115 ZIP code; the calculator prices any exact address.
Is SaaS taxable in Dekalb?
No.
Do online sellers have to collect sales tax in Dekalb?
Yes, if they have nexus in Illinois: more than $100,000 in Illinois sales in the previous or current calendar year, or a physical presence in the state. They register with the Illinois Department of Revenue and charge the rate at the buyer’s address.
Sources. Illinois Department of Revenue · Zamp Sales Tax API, for Dekalb’s 60115 ZIP code. Rates are checked monthly and are for information, not tax advice.
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