US Sales Tax Rates

Sales tax rate changes

Illinois sales tax rate changes

Updated October 8, 2026

Last verified October 2, 2026. That is the UTC date the Illinois Department of Revenue pages were retrieved. It is not an effective date.

US Sales Tax Rates monitors the sales tax publication Illinois Department of Revenue posts for Illinois: when the chart takes effect, how many jurisdictions changed, and what is coming next. It does not calculate tax on a sale.

Current Illinois chart

The current Illinois chart took effect August 1, 2026. It does not print an end date.

Every Illinois jurisdiction on the loaded file is on the Illinois rate chart.

Changes on the current Illinois chart

338 jurisdictions changed on the Effective August 1, 2026 chart, compared with the previous Illinois file.

The changes took effect August 1, 2026.

Upcoming Illinois changes

No upcoming Illinois rate change is on file.

What is monitored

Illinois Department of Revenue publishes the loaded sales tax chart for Illinois.

The in-force chart is Effective August 1, 2026, effective August 1, 2026. The chart does not print an end date. It stays current until a newer official chart for this state replaces it. The retrieval check is not that effective date. The loaded file is a text file.

The loaded file has 1544 jurisdiction rows.

A refresh fails closed. When the file cannot be read, or two readings disagree, the period is blocked and no rate is filled in.

This note does not calculate tax on a sale.

Official Illinois sources

These are official Illinois Department of Revenue pages. The current rate file is found from these pages. A direct rate-file address is not linked here.

How the chart is checked

A refresh fails closed. When the file cannot be read, or two readings disagree, the period is blocked and no rate is filled in.

Nothing in this note is estimated. When a displayed figure disagrees with the official publication, the publication wins. That rule is recorded under corrections.

Rate monitoring is not a tax calculation

This note reports how the Illinois publication is monitored. It does not calculate tax on a cart, invoice, ZIP code, or address, and it does not file a return.

Monitor Illinois

Monitoring follows the official publication. The sample report shows the shape of a change row.

Latest in-force chart · Effective August 1, 2026

Showing the first 5 of 338 jurisdictions.

  • ADDISON, DUPAGE

    Illinois · IL · 022-0002-3

    9%State 6.25% · worked out from the state's printed total and state rate 2.75%Current rate

    Previous
    8.75%
    Change (pts)
    +0.25
    Change effective
    August 1, 2026
    Verified
    October 2, 2026 at 4:11 AM UTC

    Official sourceSaved file

  • ALGONQUIN, KANE

    Illinois · IL · 045-0052-0

    8.25%State 6.25% · worked out from the state's printed total and state rate 2%Current rate

    Previous
    8%
    Change (pts)
    +0.25
    Change effective
    August 1, 2026
    Verified
    October 2, 2026 at 4:11 AM UTC

    Official sourceSaved file

  • ALGONQUIN, MCHENRY

    Illinois · IL · 056-0003-0

    8.5%State 6.25% · worked out from the state's printed total and state rate 2.25%Current rate

    Previous
    8.25%
    Change (pts)
    +0.25
    Change effective
    August 1, 2026
    Verified
    October 2, 2026 at 4:11 AM UTC

    Official sourceSaved file

  • ALSIP, COOK

    Illinois · IL · 016-0031-1

    10.25%State 6.25% · worked out from the state's printed total and state rate 4%Current rate

    Previous
    10%
    Change (pts)
    +0.25
    Change effective
    August 1, 2026
    Verified
    October 2, 2026 at 4:11 AM UTC

    Official sourceSaved file

  • ANTIOCH, LAKE

    Illinois · IL · 049-0002-2

    8.25%State 6.25% · worked out from the state's printed total and state rate 2%Current rate

    Previous
    8%
    Change (pts)
    +0.25
    Change effective
    August 1, 2026
    Verified
    October 2, 2026 at 4:11 AM UTC

    Official sourceSaved file

The full list is included with a plan.

See plans