Illinois has launched a 2026 Remote Retailer Tax Amnesty Program giving qualifying out-of-state sellers an opportunity to resolve unpaid Illinois sales tax from January 1, 2021 through June 30, 2026. The deadline to apply is October 31, 2026.
Businesses that qualify and successfully complete the program can have the related penalties and interest waived. Illinois is also offering simplified tax rates of 9% for general merchandise and 1.75% for qualifying reduced-rate products.
If you previously exceeded Illinois’ economic nexus threshold but failed to register or collect the correct sales tax, this could be an important opportunity to bring your business into compliance.
What Is the Illinois Remote Retailer Tax Amnesty Program?
Illinois’ new amnesty program is designed specifically for remote retailers with outstanding Illinois sales tax liabilities.
The program runs from: August 1, 2026 – October 31, 2026
Qualifying businesses can disclose eligible unpaid Illinois sales tax and, provided the program requirements are successfully completed, have the associated penalties and interest waived. This can be particularly valuable for ecommerce businesses that discovered they should have been collecting Illinois sales tax several years ago but never registered.
The most important thing to note is that remote sellers with unpaid Illinois sales tax from January 1, 2021 through June 30, 2026 may be able to use Illinois’ 2026 amnesty program to resolve eligible historical liabilities without the related penalties and interest. Applications must be submitted through MyTax Illinois by October 31, 2026. If you think your business may have historic Illinois sales tax exposure, now is the time to review it.
Who Qualifies for Illinois Sales Tax Amnesty?
The program is aimed at remote retailers: businesses selling tangible personal property to Illinois customers without a physical presence in the state.
To qualify, the business must have met Illinois’ applicable economic nexus threshold during at least part of the eligible period.
For periods before 2026, this could have occurred through:
- $100,000 or more in Illinois gross receipts, or
- 200 or more separate Illinois transactions
Illinois eliminated the 200-transaction test from January 1, 2026, meaning the relevant economic nexus threshold from 2026 is based on $100,000 in qualifying gross receipts. This means a seller that exceeded 200 transactions but had relatively low Illinois revenue could still have historical exposure for earlier periods.
What Tax Periods Are Covered?
The amnesty covers eligible sales made between: January 1, 2021 and June 30, 2026
That potentially gives businesses more than five years of historical Illinois sales to review.
For example, imagine an ecommerce business first crossed Illinois’ economic nexus threshold during 2022 but did not register. The business continued selling into Illinois throughout 2023, 2024 and 2025. Rather than waiting for Illinois to identify the issue, the business may be able to use the amnesty program to voluntarily resolve qualifying liabilities.
What Are the Benefits of the Illinois Amnesty?
The biggest advantage is straightforward: Penalties and interest can be waived.
But Illinois has also made the calculation process easier.
| Type of Sale | Amnesty Rate |
| General merchandise | 9% |
| Qualifying reduced-rate products | 1.75% |
The 1.75% rate can apply to qualifying products normally subject to Illinois’ reduced state rate, including certain food, medicines, drugs and medical appliances.
This simplified approach can be particularly useful where a remote retailer does not have sufficient historical information to determine the exact Illinois destination and local tax rate for every sale.
Why the Simplified 9% Rate Matters
Illinois sales tax can be complicated because local rates vary depending on where the customer is located. A remote seller trying to correct several years of historical transactions could otherwise face the difficult task of determining the correct destination-based rate for thousands of old orders. The amnesty program simplifies this by allowing qualifying general merchandise sales to be reported using the 9% simplified rate.
There is another reason businesses should take the program seriously.Illinois warns that if a taxpayer is audited and cannot provide sufficient information to determine the correct location of destination-based sales, IDOR can assess affected gross receipts at a 15% rate.
For businesses with poor historical records, that makes the amnesty program particularly significant.
What If You Never Registered for Illinois Sales Tax?
You can still potentially participate. However, you must first register with the Illinois Department of Revenue as a remote retailer and activate a MyTax Illinois account. Only then can you access the Remote Retailer Amnesty Application.
IDOR states that electronic registration applications normally take around one to two business days to process. That means businesses should not wait until October 31 to begin.
If you discover historical Illinois nexus close to the deadline, there may not be enough time to:
- Review your historical sales
- Determine the periods requiring amnesty
- Register with IDOR
- Activate MyTax Illinois
- Calculate the liability
- Submit the application
- Arrange payment
Starting the review early is much safer.
Can You Get Amnesty If You’re Already Registered?
Potentially, yes. The program is not limited to businesses that never registered. A remote retailer may already have an Illinois account but discover that it has unpaid tax for earlier eligible periods. Businesses should review their historical sales and determine which periods may qualify.
Importantly, Illinois does not require businesses to seek amnesty for every period between 2021 and 2026. Eligible periods can be selected where appropriate.
What If You Can’t Pay the Full Amount by October 31?
Illinois also provides a repayment plan option for qualifying businesses experiencing financial hardship. A repayment plan must be requested by October 31, 2026 and can run for up to 24 months.
Available repayment periods include:
- 6 months
- 12 months
- 18 months
- 24 months
A down payment is required when submitting the application. Interest begins accruing on the outstanding eligible liability from November 1, 2026, but successfully completing the approved repayment plan can still preserve the underlying amnesty treatment. Failing to complete the plan can cause the business to lose the amnesty benefits.
What Happens If You Don’t Use the Amnesty Program?
Businesses are not required to participate. However, ignoring an existing Illinois sales tax liability does not make it disappear.
IDOR warns that businesses that choose not to participate may remain subject to:
- Audit
- Unpaid sales tax
- Penalties
- Interest
And, where sufficient destination information cannot be provided during an audit, affected sales can potentially be assessed using the 15% undetermined-location rate.
For a business with several years of unreported Illinois sales, that could become considerably more expensive than addressing the problem voluntarily.
Example: Remote Seller That Never Registered
Imagine a Florida ecommerce business with no physical presence in Illinois.Its Illinois sales were:
| Year | Illinois Sales |
| 2021 | $70,000 |
| 2022 | $115,000 |
| 2023 | $180,000 |
| 2024 | $220,000 |
| 2025 | $240,000 |
The business never registered for Illinois sales tax because it did not realise it had crossed the state’s economic nexus threshold.
In 2026, it discovers the problem. Rather than simply registering from today and ignoring the past, the business should review when its Illinois collection obligation actually began. If the historical liabilities qualify, the 2026 Remote Retailer Tax Amnesty Program could provide an opportunity to resolve eligible past tax while avoiding the related penalties and interest.
Does the Removal of Illinois’ 200-Transaction Rule Affect Amnesty?
Yes, and this is an important distinction. Illinois removed its 200-transaction economic nexus threshold from January 1, 2026. However, that does not erase liabilities that arose under the old law.
For eligible periods through December 31, 2025, a remote retailer could have triggered Illinois nexus by exceeding either:
- $100,000 in qualifying gross receipts, or
- 200 qualifying transactions.
From January 1, 2026, the 200-transaction test no longer applies.
Businesses therefore need to apply the correct nexus rules to each historical period rather than using today’s threshold for previous years.
What Should Remote Sellers Do Before October 31?
If you think your business may have historical Illinois exposure, start by reviewing your sales from 2021 onwards.
Identify:
- When Illinois economic nexus was first triggered
- How much was sold to Illinois customers
- Whether sales tax was collected
- Whether tax was previously remitted
- Which periods could qualify for amnesty
- Whether you are already registered with IDOR
- Whether your historical records contain customer destination information
Do not simply register from today’s date without first reviewing the historical position. If nexus was created several years ago, registering prospectively does not necessarily resolve the previous liability.
Common Mistakes to Avoid
- Remote sellers considering the Illinois amnesty should avoid:
- Waiting until October 31 to start the registration process
- Assuming the program automatically wipes out the underlying tax
- Applying today’s nexus rules to historical periods
- Forgetting the old 200-transaction threshold
- Registering prospectively while ignoring historical exposure
- Assuming penalties and interest disappear without formally applying
- Filing paper returns instead of using the required electronic amnesty process
- Failing to maintain records supporting reduced-rate sales
The amnesty is a valuable opportunity, but businesses must follow the program requirements correctly.
FAQs
When does the Illinois Sales Tax Amnesty Program end?
The 2026 Remote Retailer Tax Amnesty Program ends on October 31, 2026.
What years are covered by Illinois remote retailer amnesty?
Eligible liabilities can relate to qualifying sales made between January 1, 2021 and June 30, 2026.
Does Illinois waive the unpaid sales tax?
No, the eligible underlying tax must still be paid. The main benefit is the waiver of the related penalties and interest when the program requirements are successfully met.
What is the Illinois amnesty tax rate?
The simplified rate is 9% for general merchandise and 1.75% for qualifying reduced-rate products.
Can I apply if my business isn’t registered in Illinois?
Potentially, but you must first register with IDOR as a remote retailer and activate a MyTax Illinois logon before submitting the amnesty application.
Can I pay the liability in instalments?
Qualifying businesses facing financial hardship can request a repayment plan of up to 24 months, provided the request is made by October 31 and the program requirements are satisfied.
Final Thoughts
Illinois’ 2026 Remote Retailer Tax Amnesty Program creates a limited window for ecommerce businesses to fix historical sales tax problems before October 31. For a remote seller that crossed Illinois’ nexus threshold years ago but never registered, the potential benefits are significant:
Resolve eligible historical sales tax. Avoid the related penalties and interest. Bring the business into compliance going forward. But the deadline is approaching, and businesses that aren’t already registered need time to set up their Illinois account before they can even submit the amnesty application.
How RJM Tax Exemption Can Help
If you’re unsure whether your business owes historical Illinois sales tax, RJM Tax Exemption can help review your sales and determine when your Illinois economic nexus obligation began.
RJM can assist with:
- Historical Illinois nexus reviews
- Identifying eligible amnesty periods
- Illinois sales tax registration
- Preparing your business to complete the amnesty process
- Calculating historical sales tax exposure
- Setting up ongoing Illinois sales tax compliance
- Filing future Illinois sales tax returns
The Illinois Remote Retailer Tax Amnesty Program closes October 31, 2026. If you have historical Illinois sales but never registered or collected the correct tax, schedule a meeting with RJM Tax Exemption now to review your position before the deadline.
