State Tax Debt: Illinois

Illinois State Tax Debt: How IDOR Collects Unpaid Income Tax and Where Its Rules Differ From the IRS

By Ray Neu, Publisher | Last reviewed: October 26, 2026 | Reading time: 9 min

Short answer

The Illinois Department of Revenue (IDOR) pursues unpaid state income tax with its own tools, apart from the IRS. After at least 10 days’ notice it can levy up to 15 percent of gross wages or make a bank hold account funds for 20 days. Its liens sit in a statewide registry and stay enforceable for 20 years.

This page covers Illinois individual income tax owed to IDOR, which sends its own bills, sets its own plans and hears its own protests; the Illinois Independent Tax Tribunal decides larger disputes. Unemployment insurance taxes belong to the Illinois Department of Employment Security (IDES). For the federal side, see back taxes.

Deadline to know: A Notice of Deficiency or other IDOR notice that grants protest rights must be challenged within 60 days of its date, by a hearing request to IDOR or a petition to the Tax Tribunal. When an IRS change raises Illinois tax, Form IL-1040-X and the extra tax are due within 120 days of the federal finalization date.

Questions about an IDOR notice or levy?
Free, confidential evaluation.

Start Your Free Evaluation

Or call (202) 968-1121

IDOR letters on the way from a bill to Collections

An unpaid return brings a first bill itemizing tax, penalty and interest. The letters, by IDOR’s names:

Notice of Tax Due (IDOR-2-BILL). Sent when an account shows a balance.
Notice of Deficiency (LTR-393-IPD). A balance-due letter that can lead to referral to collections; a Notice of Deficiency also carries protest rights.
Notice of Proposed Tax Due (ITR-61-G or ITR-61-S). From the Federal State Exchange Unit, which checks Illinois returns against IRS data, with an Examiner’s Report (EDA-131).
Collection-stage letters. IDOR’s collections presentation (October 2025) lists an Initial Letter, a Notice Before Collection Action, calls and emails, then Intent Letters.

Costs that build. Publication 103 (September 2025) adds a cost of collection fee when a bill for a final liability goes unpaid for 30 days: $30 when under $1,000 is owed and $100 at $1,000 or more. Late payment draws a 2% penalty for 1 to 30 days and 10% after that. Simple daily interest runs at the federal underpayment rate, which IDOR lists at 7% for January 1, 2025 through December 31, 2026.

IDOR wage garnishment, bank levies and the Illinois tax lien

Wage levy

After 10 days’ notice, IDOR can levy wages, bonuses and commissions, up to 15 percent of gross pay. The employer worksheet (EDC-111-W) refines that: the levy is the smaller of 15% of gross wages or net wages minus 45 hours of state minimum wage per weekly payroll (90, 97.5 or 195 hours for longer periods), less child support and any earlier levy. Form EDC-111 lists pension and retirement benefits among exempt payments. The levy continues until IDOR releases it.

Bank and asset levies

After 10 days’ notice, an IDOR bank levy holds the account, up to the past-due amount, for 20 days before the bank forwards the money. It also reaches certificates of deposit, contract payments and rent owed to the taxpayer. Most property IDOR seizes cannot be sold for at least 20 days.

The State Tax Lien Registry

Public Act 100-22 set up the State Tax Lien Registry, an online statewide record of IDOR liens, and IDOR’s presentation says liens now go there rather than to each county. A lien hurts credit, in most cases blocks selling or transferring the property until the debt is paid, and is enforceable for 20 years; one filed in error is released. IDOR’s pages disagree on fees: the Collection Process page mentions filing and release fees, the presentation says the registry adds none.

How long IDOR can collect, and its other remedies

Illinois has no single collection deadline: IDOR says enforced collection “varies from 2 years to 20 years or longer,” depending on liens, Attorney General judgments and other actions. Assessment has no time limit for unfiled returns or fraud. The CSED calculator covers only federal dates. Also listed:

Licenses. Revocation, suspension or nonrenewal of a business or professional license.
Offsets. The Comptroller can apply state payments to the debt, holding them for a 60-day protest period, and IDOR can ask the IRS for the federal refund. Both offset programs charge a fee IDOR cannot refund.
Collection agencies. Harris and Harris, Harvard Collection Services, Transworld Systems, Linebarger Goggan Blair Sampson and Alliance One. Their fees are added.
Other steps. The delinquent taxpayer list, a spouse’s refund, and home or business visits.

Owe both IDOR and the IRS?

A free, confidential evaluation can look at the Illinois and federal notices side by side.

Start Your Free Evaluation Call (202) 968-1121

IDOR payment plans, the Board of Appeals and penalty relief

Payment installment plan. Available once a balance reaches the Collections stage (a Collection ID appears on the notice) and every return is filed; all liabilities go into one plan. MyTax Illinois offers pre-approved terms, which IDOR’s presentation puts at 3 months to 2 years with a first payment within 15 days; other proposals get staff review. A paper request (Form CPP-1) over $15,000 also needs Form EG-13-I. IDOR approves no plan of its own for debt placed with an agency, in bankruptcy or under an active wage levy, and says a plan may not reverse collection already under way. Compare IRS installment agreements.

Offer in compromise. Filed with IDOR’s Board of Appeals on Form BOA-1, with Form BOA-4, three years of returns and six months of bank statements. The three-member board can reduce a final liability that is unlikely to be collected in full because of financial, medical or other demonstrable hardship. Petitions are accepted only after the liability is final and all returns are filed; two of three members must agree, the Director decides, and no appeal follows. A temporary restraining order, if the Chair grants one, pauses many collection actions, wage and bank levies among them, but not lien filings or refund offsets. Compare the federal offer in compromise.

Penalty relief. Publication 103 allows abatement of late-filing and late-payment penalties for reasonable cause; IDOR’s presentation notes the statute reaches penalty, not interest. See federal penalty abatement.

Innocent spouse relief. Form IL-8857, one per year, goes to the Problems Resolution Division for a joint filer whose own payments cover what a separate return would have owed; a separate share may remain due.

Hardship and amnesty. The IDOR pages reviewed describe no counterpart to the IRS “currently not collectible” status. The 2025 Tax Delinquency Amnesty (October 1 to November 17, 2025) has ended, and the 2026 amnesty covers only remote retailers’ sales tax.

Challenging an IDOR assessment: protest, Tax Tribunal or circuit court

Before assessment. A Notice of Proposed Deficiency after an audit can go to the Informal Conference Board by written request within 60 days.
Administrative hearing. Within 60 days of a Notice of Deficiency, Form EAR-14 opens an income tax protest at IDOR’s Office of Administrative Hearings for amounts outside the Tribunal’s reach. A final decision can go to circuit court within 35 days. A plain notice and demand for payment cannot be protested.
Illinois Independent Tax Tribunal. An independent state agency for cases with more than $15,000 of tax at issue, or penalties and interest alone over $15,000. Petitions follow the same deadline, read like court complaints, are public and carry a $500 fee (waivable for undue hardship). Appeals go to the Illinois Appellate Court. Under 35 ILCS 1010/1-45 the Tribunal cannot review proposed notices, or liens, levies and license actions on final liabilities.
Pay under protest. Outside claim denials, full payment with Form RR-374, a circuit court filing and a preliminary injunction served within 30 days, giving up the hearing and Tribunal routes.
Refund claim. Form IL-1040-X, by the latest of three years after the extended due date, three years after filing, or one year after payment.

Under the Taxpayers’ Bill of Rights (20 ILCS 2520/1 et seq.), each IDOR bill must explain itself and any protest steps. A missed protest deadline makes the notice final.

IDOR and IRS collection side by side

As of October 2026. Federal detail: IRS wage garnishment, IRS bank levy, federal tax lien.

Topic	Illinois IDOR (individual income tax)	IRS
Collection period	No single figure; 2 to 20 years or longer per IDOR	10 years after assessment under 26 U.S.C. § 6502
Wage garnishment share	Up to 15% of gross; less near the minimum wage floor	All pay above an exempt amount tied to the standard deduction and dependents
Bank levy	20-day hold after 10 days’ notice	21-day hold under § 6332(c), after notice at least 30 days ahead under § 6331(d)
Lien	Statewide registry; enforceable 20 years	Released within 30 days of full payment
Payment plan	Collections stage only; financial statement over $15,000	Online long-term plan at $50,000 or less
Offer in compromise	Board of Appeals, after the liability is final; no appeal	$205 fee; lump sum or periodic payments
Appeals body	IDOR Office of Administrative Hearings, or the Tax Tribunal over $15,000	IRS Independent Office of Appeals

Reporting IRS changes. A final federal change that raises Illinois tax calls for Form IL-1040-X, the federal finalization and payment within 120 days; one that lowers it allows a refund claim within two years plus 120 days.

Two separate files. No IDOR page reviewed treats an IRS plan or offer as covering the Illinois balance. IDOR asks about any federal offer, wants U.S. Form 8857 if IRS innocent spouse relief was sought, and rejects the federal power of attorney form.

When an attorney matters

On individual income tax, IDOR talks only to the taxpayer unless a power of attorney is filed. Form IL-2848 can name an attorney, CPA, enrolled agent or other person, and lapses after 10 years. Differences:

Hearings and the Tribunal. IDOR’s instructions allow only an attorney to represent a taxpayer at an IDOR administrative hearing or the Tax Tribunal; the Tribunal Act admits the taxpayer or an Illinois attorney, and out-of-state attorneys case by case.
Board of Appeals. A representative can be listed, but the taxpayer must sign the BOA-1 petition.
Privilege. 26 U.S.C. § 7525 covers CPAs and enrolled agents only in noncriminal matters before the IRS and in federal court.

More: tax attorney vs. CPA vs. enrolled agent.

Related guides

Frequently Asked Questions

How much of a paycheck can IDOR take?

Up to 15 percent of gross wages. IDOR’s employer worksheet takes the smaller of 15% of gross pay or net pay above a state minimum wage floor, minus child support and any earlier levy.

How long does a bank hold money under an IDOR levy?

For 20 days, after which the bank forwards the funds to IDOR. IDOR gives at least 10 days’ notice first. The IRS waiting period for banks is 21 days.

How long does an Illinois tax lien last?

IDOR says its lien is enforceable for 20 years. Liens are kept in the online State Tax Lien Registry, and a lien filed in error is released.

Does an IRS payment plan cover Illinois tax debt?

No IDOR page reviewed says so. IDOR runs its own installment plans once a balance reaches its Collections stage, and Illinois offers in compromise go to its Board of Appeals.

Who hears appeals of IDOR assessments?

The Illinois Independent Tax Tribunal takes cases with more than $15,000 of tax at issue; IDOR’s Office of Administrative Hearings hears smaller income tax protests. Either route starts within 60 days of the notice granting protest rights.

Sorting out an Illinois tax balance

Start with a free, confidential evaluation of what IDOR and the IRS each say is owed.

Start Your Free Evaluation Call (202) 968-1121

About the Author

Ray Neu

Ray Neu is the publisher of IRSAttorneys.net. A former law enforcement officer with a background in criminal justice and digital publishing, he oversees editorial direction, partnership standards, and compliance review for the site. He is not an attorney and does not provide legal advice; all tax law content is sourced and reviewed against the standards documented on the Editorial Team & Standards page.

LinkedIn Profile →

Sources

IRS Circular 230 Disclosure: To ensure compliance with Treasury Department rules governing tax practice, any tax information contained on this website was not written and is not intended to be used, and cannot be used, for the purpose of avoiding any federal tax penalty. You should consult a licensed tax professional regarding your individual situation.

Results described on this website are not a guarantee, warranty, or prediction of the outcome of any tax matter. Every situation is different. Prior results do not guarantee a similar outcome. Article content reflects general information about federal and state tax procedure as of the last reviewed date and may not reflect subsequent changes in IRS or state tax agency policy, statutes, regulations, or case law.