Join the waitlist

Illinois Sales Tax Calculator and Remote Seller Nexus Check (6.25%)

What does this come to under the current IRS rules?

Sales tax on a sale at the 6.25% statewide rate plus your local rate, and whether your sales into Illinois pass the $100,000 economic nexus threshold.

  • Runs in your browser
  • Nothing stored or sent
  • Free, no sign-up
Your figures
Example figuresIllustrative only. Type over them with your own.
Sales tax due
$62.50
Tax on the sale in Illinois
All results
MeasureResult
Statewide base rate6.25%
Combined rate6.25%
State tax$62.50
Local tax$0.00
Sales tax due$62.50
Total with tax$1,062.50
Sales counted toward the threshold$110,000
Sales test (at least $100,000)Met
Economic nexus reached
Register and collect Illinois tax
Yes
How this was worked out
Work shownrecomputed as you type
Sales tax = sale x (6.25% + local rate)
Nexus when counted sales are at least $100,000 in the preceding 12 months, tested at the end of each calendar quarter
Counted sales = direct sales + marketplace sales on which the facilitator did not collect

Illustrative arithmetic on the figures you enter. Check the result against your firm's methodology before relying on it.

The formulas

  • Sales tax = sale x (6.25% + local rate)
  • Nexus when counted sales are at least $100,000 in the preceding 12 months, tested at the end of each calendar quarter
  • Counted sales = direct sales + marketplace sales on which the facilitator did not collect

How it works

Figures current as of November 2026.

The general state rate is 6.25 percent. The tool multiplies the sale amount by the statewide base rate plus the local rate you enter (locally imposed taxes for the delivery address) and shows the state and local parts separately. The local rate depends on where the goods are delivered.

A seller with no physical presence in Illinois must register and collect once it has at least $100,000 of cumulative gross receipts from sales of tangible personal property to Illinois purchasers in the preceding 12 months, tested at the end of each calendar quarter. The 200-transaction test was removed effective January 1, 2026. Marketplace sales on which the facilitator collects Illinois tax do not count toward your own threshold; marketplace sales on which it does not collect do count.

A seller with a physical presence in Illinois, such as staff, an office or inventory, must collect regardless of the threshold. The tool does not decide whether a product is taxable or exempt; enter the taxable price.

Illustrative figures only. Check the result against your firm's methodology before relying on it.

Common questions

What is the Illinois sales tax rate?

The general state rate is 6.25 percent. Local rates are added on top by delivery address.

What is the Illinois economic nexus threshold?

At least $100,000 of cumulative gross receipts from sales of tangible personal property to Illinois purchasers in the preceding 12 months, tested at the end of each calendar quarter.

Do marketplace sales count toward the Illinois threshold?

Marketplace sales on which the facilitator collects Illinois tax do not count toward your own threshold; marketplace sales on which it does not collect do count.

Did Illinois change its threshold recently?

The 200-transaction test was removed effective January 1, 2026.

Sources

Runs in your browser. The figures you type are not sent to CORAA or stored. Check the result against your firm's methodology before relying on it.

Related audit calculators

CalculatorIndiana Sales Tax Calculator and Remote Seller Nexus Check (7%)Sales tax on a sale at the 7% statewide rate plus your local rate, and whether your sales into Indiana pass the $100,000 economic nexus threshold.CalculatorIowa Sales Tax Calculator and Remote Seller Nexus Check (6%)Sales tax on a sale at the 6% statewide rate plus your local rate, and whether your sales into Iowa pass the $100,000 economic nexus threshold.CalculatorKansas Sales Tax Calculator and Remote Seller Nexus Check (6.5%)Sales tax on a sale at the 6.5% statewide rate plus your local rate, and whether your sales into Kansas pass the $100,000 economic nexus threshold.
For US CPA firms

Join the CORAA waitlist

CORAA AI drafts audit working papers from your client’s QuickBooks books and does the first pass: lead schedules, tie-out, memos, draft notes and letters. CORAA Network reviewers clear every finding. Your firm reviews and signs.

  • First audit free, so you can judge the quality on a real file
  • Flat fee by entity size; messy books included
  • We work only with CPA firms, never their clients
See how it works →

* required