Illinois Form CFT MT 14B Mileage Weight Tax Guide

What Is Form CFT MT 14B?

Form CFT MT 14B is the Affirmation and Certification document required for Mileage Weight Tax Registration. It is listed on the official Commercial and Farm Truck Publications and Forms page of the Illinois Secretary of State website as “Mileage Weight Tax Registration Affirmation and Certification.”

By signing this form, the vehicle owner or authorized representative affirms under penalty of perjury that they have read and understand the rules for Mileage Weight Tax plates. These rules include daily mileage recordkeeping, timely annual reporting, maintenance of working odometers or hub-o-meters, and responsibility for any excess mileage fees.

The form works in conjunction with the related instructions document (CFT MT 14A). Together, they ensure that registrants acknowledge their legal obligations under the Illinois Vehicle Code (625 ILCS 5/3-818 and related sections).

Who Needs to File Form CFT MT 14B?

Any owner of a second-division vehicle (trucks, truck-tractors, buses, or certain trailers) who elects Mileage Weight Tax registration instead of the standard flat weight tax must complete and submit the affirmation and certification. This option is designed for vehicles that operate a limited number of miles solely within Illinois and therefore qualify for lower registration fees based on weight and guaranteed mileage allowances.

Key points for eligibility:

• The vehicle must operate only inside Illinois — out-of-state travel is prohibited by statute.
• A $500 Second Division Motor Vehicle Surety Bond per vehicle is required.
• The vehicle must have a functioning odometer (or hub-o-meter for trailers).
• The election is binding for the entire registration year (typically July 1 – June 30).

New applications, renewals, and certain file updates processed at the Commercial and Farm Truck Division in Springfield require a signed certification on file. Failure to maintain a current signed form can result in plate revocation.

Key Requirements of Mileage Weight Tax Registration

Understanding the full set of rules is essential before signing Form CFT MT 14B. Official Illinois Secretary of State guidance outlines the following core obligations:

• Bond Requirement: A $500 surety bond issued by a company approved by the Illinois Department of Insurance must be on file for each vehicle. The bond must name the registrant, list the VIN, and cover the full registration period through June 30.
• Odometer/Hub-o-Meter: Vehicles must maintain a working odometer at all times. Trailers require hub-o-meters. Operation with a broken, disconnected, or disabled device can lead to immediate forced conversion to flat-weight registration and possible suspension or revocation.
• Recordkeeping: Daily mileage records and fuel purchase/consumption records must be kept for three years after plate expiration and are subject to audit.
• Annual Reporting: Ending odometer readings as of June 30 must be reported by July 10 each year. Online reporting is available during the open period via the official Mileage Weight Tax Reporting portal.
• Excess Mileage Fees: Miles traveled beyond the guaranteed maximum for the vehicle’s weight class are charged at the published per-mile rate. The registrant is fully responsible for payment.
• No Reclassification Mid-Year: Once elected, Mileage Weight Tax plates cannot be switched to flat-weight plates during the registration year. Weight upgrades are possible with additional fees; downgrades are not.

These requirements are enforced under the Illinois Vehicle Code. Willfully providing false information can result in perjury penalties.

How to Complete and Submit Form CFT MT 14B?

Form CFT MT 14B is a straightforward affirmation statement. Typical sections include:

• Mileage File number (assigned by the Secretary of State)
• Signature of the registrant or authorized person
• Printed name and contact telephone number
• Date signed
• Space for Secretary of State auditor or employee signature when required

The signer affirms that they have read the instructions, understand daily recordkeeping and reporting duties, will maintain operable mileage devices, will pay excess fees when assessed, and that all information is true under penalty of perjury.

Submission occurs as part of the application or renewal process at the Commercial and Farm Truck Division, 501 S. Second Street, Room 300, Springfield, IL 62756. Because of bonding requirements, new Mileage Weight Tax plates are issued only at this Springfield location. Renewals may also be handled at the Joliet and Carbondale facilities in addition to Springfield.

Always download the current official form rather than using third-party versions. Forms are provided as fillable PDFs and should be opened with Adobe Acrobat Reader for best results.

Download the Official Form CFT MT 14B

The current official PDF is available directly from the Illinois Secretary of State:

Download Form CFT MT 14B — Mileage Weight Tax Registration Affirmation and Certification (PDF)

Related forms and publications can be found on the official Commercial and Farm Truck Publications page: Commercial and Farm Truck Publications and Forms.

For detailed instructions that accompany the certification, see also Form CFT MT 14A.

Mileage Weight Tax Fee Schedule Overview

Fees are based on combined gross vehicle weight and include a guaranteed mileage allowance. Excess miles are billed at a published rate. Examples of current classes (subject to statutory updates) include:

• Lower-weight motor vehicles (e.g., 12,000 lbs or less) — lower annual fee and 5,000–6,000 guaranteed miles
• Heavier vehicles up to 80,000 lbs — higher fees with 7,000 guaranteed miles and corresponding excess-mile rates
• Trailer classes with their own fee and mileage schedules

Vehicles registered at 55,000 pounds or more must also provide proof of Heavy Vehicle Use Tax (HVUT) compliance via a receipted IRS Form 2290, Schedule 1.

Always verify the latest fee schedule on the official Illinois Secretary of State website or the current instructions form, as rates can be adjusted by statute.

Consequences of Non-Compliance

Failure to maintain records, report mileage by the July 10 deadline, keep odometers functional, or pay excess fees can result in:

• Suspension or revocation of the Mileage Weight Tax plates
• Forced conversion to higher-cost flat-weight registration
• Possible suspension of other registrations under the same ownership until deficiencies are cured
• Audit findings that may include additional penalties and interest

Law enforcement is authorized to remove plates from vehicles found operating with disabled mileage devices.

Additional Resources and Contact Information

For official information, use these Illinois Secretary of State resources:

• Commercial and Farm Trucks main page
• Mileage Weight Tax Reporting FAQ
• Online Mileage Weight Tax Reporting portal (open during the annual reporting period)
• Commercial & Farm Truck Division phone: 217-785-1800

Always rely on official .gov sources for the most current forms, fees, and procedures. Third-party sites may host outdated or incomplete versions of Form CFT MT 14B.

Conclusion

Form CFT MT 14B is more than a signature page — it is the legal affirmation that allows Illinois commercial vehicle owners to take advantage of the lower-cost Mileage Weight Tax option while accepting full responsibility for compliance. By understanding the requirements, downloading the official form from the Illinois Secretary of State, and maintaining accurate records and working mileage devices, operators can remain in good standing and avoid costly penalties.

If you operate limited-mileage second-division vehicles exclusively within Illinois, review the current instructions, secure the required surety bond, and complete Form CFT MT 14B as part of your registration process. For personalized assistance, contact the Commercial and Farm Truck Division directly.