Illinois(IL) IFTA Fuel Taxes Back

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Who Is Required To Register for Illinois IFTA?

A qualified motor vehicle is a motor vehicle used, designed, or maintained for transportation of persons or property having:

  • Two axles and a gross vehicle weight or registered gross vehicle weight exceeding 26,000 pounds or 11,797 kilograms; or
  • Having three or more axles regardless of weight; or
  • Is used in combination, when the weight of such combination exceeds 26,000 pounds or 11,797 kilograms gross vehicle or registered gross vehicle weight.

Qualified Motor Vehicles do not include recreational vehicles unless they are used in conjunction with any business endeavor. Recreational vehicles are vehicles such as motor homes, pickup trucks with attached campers and buses when used exclusively for personal pleasure by an individual.

New Illinois IFTA Fuel Tax Accounts

You must apply online for your Illinois IFTA license. There is a $3.75 fee for each set of decals. You will need one set per qualified vehicle. Credentials will be mailed within 24 hours and you should receive them within a week. Same day decals can be picked up in person.

TSNAmerica can assist you with the application process .

Illinois IFTA Renewals

Renewal applications must be completed online. Let TSNAmerica renew your Illinois IFTA decals today.

Quarterly Illinois IFTA Returns

An Illinois quarterly IFTA return must be filed by the due date:

Illinois Reporting Periods Illinois IFTA Filing Deadlines
January - March April 30
April - June July 31
July - September October 31
October - December January 31
*If the due date falls on a Saturday, Sunday or legal holiday, the next business day is considered the tax reporting filing due date.

Note: An Illinois IFTA fuel tax report must be filed even if no fuel was used.

Illinois IFTA Penalties

A late penalty of $50 or 10% of the net tax liability, whichever is greater, is assessed on returns received after the filing deadline. Interest is computed on all delinquent taxes due to each jurisdiction at a rate of .4167% per month. Even if you have a net refund, interest still applies to each jurisdiction for any underpayment of fuels use tax due and is calculated beginning the day after the due date of the return for each month, or fraction of a month, until paid.

Illinois IFTA Audits


IFTA Illinois audits are used to verify compliance and base jurisdictions are required to audit 3% of the IFTA accounts in their state per year. The licensee will be contacted in writing at least 30 days prior to the audit and must make the required records available at the time of the audit. IFTA Audits are never fun, but keeping detailed records that include all required information will take the stress out of the audit process.


Filing Illinois IFTA fuel tax can be tedious and time consuming. For more details, see www.revenue.state.il.us/Motorfuel or let TSNAmerica take the paperwork out of your way by using our Illinois Quarterly IFTA Filing Services! Our quarterly filing packages start at $75. (Contact us for multiple vehicle pricing.)

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