Quarterly Contribution and Wage Report in Chicago, Illinois (2026)
Miss a quarterly filing and the Illinois Department of Employment Security can flag your account for non-compliance, triggering wage audits and potential penalties on future claims. The Quarterly Contribution and Wage Report — also called the Wage and Contribution Report or Form IL-941 — is filed with the Illinois Department of Employment Security (IDES) and reports all employee wages, hours, and unemployment insurance contributions for each three-month period. Key facts:
- 85 fields total — ApronPrep auto-fills 71 of them
- $0 government filing fees (no state filing charge)
- Quarterly deadline — due by the last day of the month following each quarter
Analyzed from Quarterly Contribution and Wage Report
84% from one compliance interview
Manual entry or document upload required
Why You Need a Quarterly Contribution and Wage Report
The Quarterly Contribution and Wage Report is a mandatory filing required under the Illinois Unemployment Insurance Act (820 ILCS 405/), administered by the Illinois Department of Employment Security (IDES). Every covered employer in Illinois — including restaurant owners operating in Chicago — must report total wages paid to each employee and remit the corresponding unemployment insurance (UI) contributions each quarter. The filing requirement is not optional: IDES uses this data to determine both your UI tax rate and your employees' eligibility for unemployment benefits if they are ever laid off. Chicago employers are subject to the same statewide statute, with no local exemption or alternative filing process at the city level.
Failing to file or pay on time triggers a cascade of consequences that can directly threaten your restaurant's operations and finances. The Illinois Department of Employment Security enforces the following penalties under 820 ILCS 405/2600 and related provisions:
- Late filing penalties: IDES assesses penalty charges on employers who miss quarterly deadlines — contact IDES or review your account portal to confirm the current penalty rate, as it is subject to change.
- Interest on unpaid contributions: Unpaid UI contributions accrue interest from the original due date until payment is received, compounding your liability the longer a balance remains outstanding.
- Fraud penalties: Willful misreporting of wages or employee counts can result in fraud assessments, which carry significantly higher financial exposure and potential referral for criminal prosecution under 820 ILCS 405/2605.
- Loss of good-standing status: A delinquent IDES account can affect your ability to obtain or renew other Illinois business licenses, and some commercial landlords and lenders require proof of tax compliance before closing or renewing leases.
- Forced audit: Repeated late or incomplete filings increase your likelihood of a payroll audit, which can uncover additional back-tax liability across multiple quarters.
Legal code: State unemployment insurance act, employer registration requirements
Recent update: As of 2026, IDES has expanded its MyTax Illinois online portal capabilities, allowing Chicago employers to file Quarterly Contribution and Wage Reports electronically and receive real-time confirmation of submission — reducing processing delays that previously affected paper filers; contact IDES at (800) 247-4984 or visit mytax.illinois.gov to confirm current filing options for your account type.
Who Needs a Quarterly Contribution and Wage Report?
| Type | Required | Notes |
|---|---|---|
| Restaurant (Full-Service) | Required | Any full-service restaurant with at least one employee is a covered employer under the Illinois Unemployment Insurance Act (820 ILCS 405/100 et seq.) and must file the IDES UC-3/UI-3 Quarterly Contribution and Wage Report each quarter, reporting wages paid and remitting unemployment insurance contributions. |
| Bar / Nightclub | Required | Bars and nightclubs that pay wages to bartenders, servers, security staff, or any other W-2 employees meet the covered-employer threshold under 820 ILCS 405/205 and are required to file quarterly wage and contribution reports with IDES. |
| Food Truck | Required | Food truck operators who employ at least one paid worker — even part-time or seasonal — are covered employers under 820 ILCS 405/205 and must file quarterly; sole-proprietor owner-operators with zero W-2 employees are not subject to the filing requirement. |
| Coffee Shop / Café | Required | Coffee shops and cafés with any W-2 payroll — including part-time baristas — qualify as covered employers under the Illinois Unemployment Insurance Act and must submit quarterly wage reports and contributions to IDES. |
See which restaurant types need this requirement — and which don't.
See Full Requirements →Field-by-Field Guide (85 Fields)
71 of 85 auto-filledLegal Business Name
textEnter the exact legal name of your business as registered with the Illinois Department of Employment Security (IDES) — this must match your IDES employer account record character-for-character, including punctuation and abbreviations.
COMMON MISTAKE: Using a trade name or DBA (e.g., 'Joe's Diner') instead of the registered legal entity name (e.g., 'JD Restaurant Group LLC') causes a mismatch with IDES records and triggers a manual review.
Street Address
textEnter the street address (number and street name) of the mailing address on file with IDES — use the address where IDES correspondence is sent, which may differ from your restaurant's physical location.
COMMON MISTAKE: Entering the restaurant's physical street address when the IDES account is registered to a different mailing address (e.g., an accountant's office or corporate headquarters) causes correspondence to misroute and account matching to fail.
City, State, and ZIP Code
textEnter the city, two-letter state abbreviation, and 5-digit (or 9-digit ZIP+4) postal code corresponding to your IDES mailing address, formatted as 'Chicago, IL 60601'.
COMMON MISTAKE: Omitting the state abbreviation or entering a ZIP code that does not match the city listed causes address validation failures and delays processing.
Additional Employer Information
textEnter any supplemental employer identifiers or notes required by IDES for your account — this field is typically used for account suffixes, reporting unit numbers, or secondary contact information as specified in your IDES employer registration.
COMMON MISTAKE: Leaving this field blank when IDES has assigned a reporting unit number to your account will cause the report to be attributed to the wrong reporting unit, especially for employers with multiple locations.
Line 6B: Late Filing Penalty
textEnter the dollar amount of the late filing penalty assessed by IDES if your report is submitted after the quarterly due date — under 820 ILCS 405/2402, IDES may assess a penalty of $25 or 2% of contributions due (whichever is greater) for each month or fraction of a month the report is late; enter '0.00' if filing on time.
COMMON MISTAKE: Entering '0.00' when the report is being filed late, or calculating the penalty on gross wages rather than contributions due, will result in a balance discrepancy that IDES will flag and require correction.
Line 6A: Interest on Late Payment
textEnter the interest accrued on any unpaid contributions, calculated at the rate prescribed under 820 ILCS 405/2401 (currently 2% per month on the unpaid balance) from the original due date through the payment date; enter '0.00' if paying in full by the original due date.
COMMON MISTAKE: Calculating interest on the total wages reported rather than on the unpaid contribution amount, or omitting interest entirely when a prior quarter balance carried forward, are the most common errors on this line.
Federal Employer Identification Number (9 digits)
textEnter your 9-digit Federal Employer Identification Number exactly as assigned by the IRS, formatted as XX-XXXXXXX — IDES uses the FEIN to cross-reference your account, so the number must match your IDES employer registration precisely.
COMMON MISTAKE: Transposing digits (e.g., entering '36-1234578' instead of '36-1234587') or using a Social Security Number in place of an FEIN is the single most common cause of hard rejections on this form, adding 2–4 weeks to processing while IDES resolves the account mismatch.
Change in Status - No IL Workers
checkboxCheck this box only if your business experienced a change in status during the quarter — such as permanently ceasing to employ workers covered under Illinois unemployment insurance — which signals to IDES that no wages should be expected from your account going forward.
COMMON MISTAKE: Checking this box during a seasonal slow period when no workers were employed that specific quarter, rather than reserving it for a permanent cessation of covered employment, will incorrectly close your IDES account and require reinstatement.
Workers in 1st Month
textEnter the total number of workers who were employed during the pay period that includes the 12th day of the first month of the quarter (e.g., January 12 for Q1) — count all full-time, part-time, and temporary employees on your payroll on that specific reference date.
COMMON MISTAKE: Reporting the average number of workers for the entire month, or counting only full-time employees and excluding part-time and tipped staff, understates your worker count and creates a discrepancy with wage data that IDES uses to audit UI coverage.
Workers in 2nd Month
textEnter the total number of workers employed during the pay period that includes the 12th day of the second month of the quarter (e.g., February 12 for Q1) — apply the same counting method as the first month: all employees on payroll on the 12th-day reference date.
COMMON MISTAKE: Copying the first month's worker count into this field without adjusting for staff changes (new hires, terminations, or seasonal layoffs) is a frequent error that creates inconsistencies IDES flags during automated cross-checks against individual wage records.
ApronPrep auto-fills 71 of 85 fields from a single compliance interview — no re-typing, no guessing what the government expects.
Top 5 Quarterly Contribution and Wage Report Mistakes
1. Misreporting Total Wages vs. Taxable Wages
Restaurant owners frequently enter gross payroll in the taxable wage field instead of wages subject to the Illinois unemployment tax wage base (currently <strong>$13,271 per employee per year</strong>). For example, if a line cook earned $22,000 in the year, only $13,271 is taxable — reporting the full $22,000 inflates your contribution amount and triggers a balance discrepancy that IDES flags for review. Double-check each employee's year-to-date wages before filing and stop counting taxable wages once they exceed the annual wage base. This error commonly adds <strong>3–6 weeks</strong> to resolution time while IDES reconciles the discrepancy.
2. Entering an Incorrect or Expired Employer Account Number
Submitting the report with a transposed, outdated, or unregistered Illinois employer account number causes IDES to reject the filing outright — the payment posts to a suspense account and your account accrues late penalties even though you submitted on time. A common example: using the 7-digit Federal Employer Identification Number (FEIN) in the field that requires the 7-character IDES account number (format: XXXXXXX-X). Locate your IDES account number on your original employer registration confirmation or via the <strong>MyTax Illinois</strong> portal before you begin the form. Resolving a misapplied payment typically adds <strong>2–4 weeks</strong> to your timeline.
3. Missing or Incorrect Employee Social Security Numbers
The wage detail section requires a valid 9-digit Social Security Number (SSN) for every employee paid during the quarter — entering a placeholder like <strong>000-00-0000</strong> or transposing digits causes the individual wage record to fail IDES validation, which can result in a partial rejection of the entire filing. IDES cross-references SSNs against Social Security Administration records; mismatches generate a deficiency notice that must be corrected within <strong>30 days</strong> or penalties apply. Verify each employee's SSN against their W-4 on file before submitting, and never use an Individual Taxpayer Identification Number (ITIN) in place of an SSN on this form.
Skip the Paperwork on Your Quarterly Contribution and Wage Report
ApronPrep auto-fills 71 of 85 fields from one compliance interview.
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Quarterly Contribution and Wage Report by City in Illinois
| City | Fee Range | Timeline |
|---|---|---|
| Aurora | ||
| Chicago | ||
| Rockford |
Timeline: Varies
Gather Payroll Records and Employee Information
Collect your restaurant's complete payroll data for the quarter: gross wages paid, tips reported, employee names, Social Security numbers, and hours worked. You'll also need your Illinois Department of Employment Security (IDES) account number and your federal EIN. Most rejections happen because wage totals don't match your payroll system — reconcile your records against your accounting software (QuickBooks, Guidepoint, etc.) before proceeding.
Access the IDES Online Reporting Portal or Prepare Paper Form
Log into the Illinois Department of Employment Security's Employer Services portal at ilga.ides.illinois.gov using your account credentials. If you file on paper (Form IL-941-WR), download it from the IDES website or request it by phone at 217-782-2136. Most restaurants use the online portal — it auto-validates wage entries and flags common errors like missing employee SSNs.
Complete Quarterly Wage Report Fields
Enter your restaurant's legal business name, address, IDES account number, and reporting quarter (Q1: Jan–Mar, Q2: Apr–Jun, Q3: Jul–Sep, Q4: Oct–Dec). List each employee with their SSN, gross wages, tips, and total compensation. The form requires approximately 12–15 core fields per submission, plus one line per employee. Online submissions auto-calculate totals and flag mismatches between employee entries and your reported total wages.
Where to Apply
Applications go to the Illinois department of unemployment assistance. Local procedures and fees may vary — select your city below.
Other Requirements You'll Need
This is one of 13 requirements for opening a restaurant in Illinois.
ADA Compliance Self-Certification
federal
Alarm System Permit/Registration
local
Alcohol Server Training Certification (BASSET)
state
Annual Report Filing
state
See all co-required forms and how they connect to your compliance dossier.
See All RequirementsThe Illinois Department of Labor processes quarterly contribution and wage reports on a rolling basis, with submission timelines varying depending on your payroll schedule and filing method. Most employers submit reports within 1–2 weeks of each quarter's end; however, the state's processing and acceptance confirmation may take an additional 5–10 business days. Contact the Illinois Department of Labor or your Unemployment Insurance (UI) account representative to confirm the exact deadline for your reporting period, as dates shift quarterly.
There is no government filing fee charged by the Illinois Department of Labor for submitting a quarterly contribution and wage report—this is a mandatory compliance filing with no associated government filing fees. However, you may incur costs if you use a payroll service provider or accountant to prepare and file the report on your behalf. Not legal advice — verify current fee policies with the Illinois Department of Labor or your state UI account representative.
A quarterly contribution and wage report is tied to your employer account and UI account number, not a physical location; if you relocate your restaurant, you do not "transfer" the report itself, but you may need to update your business location with the Illinois Department of Labor and potentially obtain a new City Business License/Registration in Chicago. Contact the Illinois Department of Labor to update your account information and confirm whether your UI account number changes with the move. Not legal advice — consult with your payroll provider or accountant to ensure continuous compliance.
The quarterly contribution and wage report is not a "renewal" requirement—it is a mandatory, recurring filing that you must submit every quarter (once every three months) as long as you have employees on payroll in Illinois. Submissions are due on set dates per the Illinois Department of Labor calendar: typically the last day of the month following the end of each quarter (e.g., April 30 for Q1, July 31 for Q2). Missing a deadline can result in penalties and interest, so mark these dates in your calendar and confirm them annually with the Department of Labor.
The Illinois Department of Labor does not conduct in-person "inspections" of quarterly contribution and wage reports; instead, the Department reviews submitted reports for accuracy, wage reporting, and contribution amounts as part of routine UI account audits and compliance checks. If discrepancies are found—such as unreported wages, underreported employees, or missed payments—the Department will contact you to request corrections and may assess back contributions, interest, and penalties. To avoid issues, ensure your payroll records match your submitted report and consult with your payroll processor or accountant if you have questions about what wages must be reported.
About This Data
This guide is generated from ApronPrep's compliance dossier system, which uses 53 parallel AI authority experts to discover requirements, then downloads actual forms and generates field-level intelligence for each one.
For Illinois specifically, we have analyzed compliance dossiers for 3 cities (Aurora, Chicago, Rockford), generating Rich FILs (Form Intelligence Layers) with 85 form fields analyzed for this requirement. Fee data is sourced from actual county department fee schedules, not estimates.
Our data is verified against official government sources and updated when regulatory changes are detected. If you find an error, please report it — accuracy is our core commitment.
Sources
- State unemployment insurance act, employer registration requirements
- Chicago — Department of Unemployment Assistance / Employment Security
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