IL-990-T-X-V

A step-by-step guide to completing and filing Form IL-990-T-X-V — the Illinois payment voucher for amended exempt organization income and replacement tax — including what it is, how to file it, and line-by-line instructions to ensure error-free submission.

Form IL-990-T-X-V, officially titled “Payment Voucher for Amended Exempt Organization Income and Replacement Tax”, is issued by the Illinois Department of Revenue (IDOR) for organizations filing an amended return using Form IL-990-T-X. This form is exclusively for tax-exempt organizations that need to pay additional Illinois income and replacement tax resulting from corrections, changes, or federal adjustments to their original return.

When you amend your return and owe more tax, Form IL-990-T-X-V acts as the payment slip that ensures your payment is correctly matched with your organization’s account and the proper tax year. It’s designed for payments made by mail and should always accompany your amended Form IL-990-T-X if you are not paying electronically.

If you pay electronically, or if your amendment results in no additional payment, you do not need to file this form. For everyone else, this voucher is essential to prevent processing delays, misapplied payments, or penalties. It helps the state efficiently track your amended return payment while ensuring compliance with Illinois tax laws.

How To File Form IL-990-T-X-V

Filing Method

There are two ways to handle payments for amended returns:

  1. Electronic Payment (Preferred):
    • You can make payments directly through the Illinois Department of Revenue’s website at tax.illinois.gov.
    • Electronic payment is faster, safer, and provides an immediate confirmation receipt.
    • If you pay electronically, do not mail Form IL-990-T-X-V.
  2. Mail Payment:
    • If paying by check or money order, you must include Form IL-990-T-X-V with your amended return (Form IL-990-T-X).
    • Make checks payable to “Illinois Department of Revenue”.
    • Write your FEIN, tax year ending, and “IL-990-T-X-V” on the payment.
    • Mail the voucher and payment to: Illinois Department of Revenue
      P.O. Box 19016
      Springfield, IL 62794-9016
    • Attach the voucher and payment securely to the front page of your amended return to ensure proper processing.
How to Complete Form IL-990-T-X-V

How to Complete Form IL-990-T-X-V

This form is short and straightforward but must be filled out accurately. Each field serves an important purpose. Let’s go line by line:

Header Section

At the top of the form, you’ll see:
“If no payment is due or you make your payment electronically, do not file this form.”
This reminder ensures that the form is only used for mailed payments when tax is owed.

Mail To

Printed at the top-right corner is the official mailing address:
Illinois Department of Revenue, P.O. Box 19016, Springfield, IL 62794-9016.
Always send both your voucher and check or money order to this address when mailing your amended return.

FEIN (Federal Employer Identification Number)

Enter your organization’s nine-digit FEIN.
Example: 36-1234567.
This number identifies your account and ensures that the payment is applied correctly.

Name

Enter your organization’s full legal name, exactly as it appears on your Form IL-990-T-X and IRS records. Consistency prevents processing errors.

C/O (Care Of)

If another party (like an accountant, attorney, or preparer) is handling your filing, include their name in this field. Otherwise, leave it blank.

Mailing Address

Write your complete address, including street name, suite number, or P.O. Box. This is the address IDOR will use for any correspondence related to your amended payment.

City, State, ZIP

Fill in your city, state abbreviation, and ZIP code (use ZIP+4 if available).

Phone

Enter a valid daytime phone number with area code (e.g., 312-555-7890).
This allows IDOR to contact you quickly if they have questions about your payment.

Tax Year Ending (Month and Year)

Enter the month and year when your amended tax year ends.
For example, if your fiscal year ends June 30, 2024, enter:

  • Month: 06
  • Year: 2024

This identifies which tax period your payment applies to.

Payment Amount (Whole Dollars Only)

In the large dollar box labeled “$ 00”, write the total amount of payment you are sending.

  • Use whole dollars only (no cents).
  • Example: Enter “1500” for $1,500.00.
    This ensures your payment matches your amended tax balance exactly.

Instructions for Making the Payment

The lower half of the form outlines exactly how to pay:

  1. Enter your FEIN.
  2. Enter your name, address, and phone.
  3. Enter your tax year ending month and year.
  4. Enter the payment amount in whole dollars.
  5. Detach and submit your voucher and payment:
    • Write your FEIN, tax year ending, and “IL-990-T-X-V” on your check or money order.
    • Make it payable to “Illinois Department of Revenue.”
    • Attach both the voucher and payment to the front of your amended return (Form IL-990-T-X).
    • Mail them to P.O. Box 19016, Springfield, IL 62794-9016.

Official Use Only Section

You’ll notice a small box labeled “Official Use Only” on the right side of the form.
Leave this blank. It’s reserved for the Illinois Department of Revenue’s internal processing staff.

Final Tips For Filing Form IL-990-T-X-V

  • Do not staple your check — use a paper clip or envelope.
  • Double-check your FEIN — an incorrect ID delays processing.
  • Use the correct year-end date to ensure payment is applied properly.
  • Pay electronically if possible for faster confirmation and reduced mailing time.
  • Keep a copy of both the voucher and check/money order for your records.
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