MCD-439 Form – If you operate vehicles or loads that exceed Texas size or weight limits and are not required to hold TxDMV Motor Carrier Registration (MCR) or Unified Carrier Registration (UCR), you must file a surety bond before receiving an oversize/overweight (OS/OW) permit. The official document for this bond is Form MCD-439 — the Superheavy or Oversize Permit Bond.
This step-by-step guide explains everything you need to know about the MCD-439 form, who needs it, exact bond requirements, how to complete and file it, validity rules, and the direct official PDF download. All information is sourced directly from the Texas Department of Motor Vehicles (TxDMV) as of 2026.
What Is the MCD-439 Form?
The MCD-439 is the official Annual Superheavy or Oversize Permit Bond required by the Texas Department of Motor Vehicles. It guarantees payment of up to $10,000 for any damage sustained to Texas highways caused by equipment operating under a permit issued under Chapter 623 of the Texas Transportation Code.
The bond is payable to the Texas Department of Transportation (TxDOT) and protects state highways from damage caused by oversize or overweight loads. It is an annual bond (not a one-time or per-trip bond).
Key fact: The form has been issued as MCD-439 (Rev. 07/17) and remains the current, required version with no updates noted by TxDMV.
Who Needs the MCD-439 Oversize Permit Bond?
You must file this bond if:
- You are applying for an oversize/overweight permit from TxDMV.
- You are not required to obtain TxDMV Motor Carrier Registration (MCR) or Unified Carrier Registration (UCR).
Most commercial carriers with MCR or UCR are exempt from this bond. If you operate without those registrations (for example, certain private or infrequent haulers), the bond is mandatory before any permit is issued.
Important: The bond covers all owned or leased vehicles belonging to the principal company during the annual bond period.
MCD-439 Bond Requirements and Amount
- Bond amount: Fixed at $10,000.
- Form: Must be issued exactly on TxDMV Form MCD-439 (no substitutes or continuations accepted).
- Payable to: Texas Department of Transportation (TxDOT).
- Purpose: Covers highway damage from permitted equipment.
Strict bond document requirements (failure to meet these will delay or prevent permit issuance):
- Issued and signed by a resident Texas agent or a non-resident agent with a valid Texas insurance license.
- Must include the surety company’s seal or power of attorney.
- Signed by an authorized representative of the bonding company.
- Principal’s full name and address (including hometown and ZIP code) must be consistent throughout.
- Company name and address printed on the face of the bond.
- All signatures required on both original and any facsimile.
Step-by-Step: How to Complete the MCD-439 Form?
The one-page form is straightforward. Here’s exactly what to fill out (based on the official PDF):
- Principal Information — Enter the legal name of the company or individual operating the equipment, plus:
- Street or P.O. Box
- City, State, ZIP Code
- County
- Effective Date — Write the start date (e.g., “Effective this day of , A.D. ___”).
- Bond Details — The penal sum is pre-printed as Ten Thousand and No/100 Dollars ($10,000).
- Signatures:
- Principal signs with title.
- Surety signs “BY: Attorney-in-Fact” (bonding company representative).
- Bond Number — For internal use only (leave blank unless provided by surety).
Pro tip: The surety company usually completes most of the form and provides the required seal/power of attorney.
How to File the MCD-439 Bond with TxDMV?
- Obtain the completed bond from your insurance or bonding company.
- Fax a copy immediately to (512) 465-4251.
- Mail the original right away (regular mail or overnight) to:
TxDMV Attn: MCD-Permits
4000 Jackson Avenue
Austin, TX 78731
Critical timeline:
- Fax/facsimile is valid for only 10 days.
- The original bond must be received by TxDMV within those 10 days for continued permit issuance.
- Provide 14-day written termination notice if the bond is canceled early.
Validity Period and Renewal
- The bond is annual.
- It runs from the effective date until August 31 of the following year (aligning with the standard September 1 – August 31 bond year).
- Renew before August 31 each year to avoid permit delays.
Where to Obtain a Texas Oversize Permit Surety Bond
Contact any licensed insurance or bonding company authorized to write surety bonds in Texas. TxDMV cannot recommend specific agents but directs applicants to the Texas Department of Insurance website (tdi.texas.gov) for a list of licensed companies.
Bond premiums vary by provider and your credit/history — contact companies directly for quotes. The bond itself is filed with TxDMV at no additional state fee.
Download the Official MCD-439 PDF Form
Direct official download (always use this version):
Download MCD-439 Oversize Permit Bond PDF
This is the exact one-page form required by TxDMV.
Frequently Asked Questions (FAQ)
How much does the MCD-439 bond cost?
The penal sum is $10,000, but your premium (what you actually pay the surety company) depends on the provider. TxDMV does not set or collect the premium.
Can I use a certificate of continuation?
No — only the standard MCD-439 form is accepted.
Is the bond required for every permit type?
Only for applicants not holding MCR or UCR who need oversize/overweight permits.
Where do I apply for the actual oversize permit?
Use the Texas Permitting & Routing Optimization System (TxPROS) at txpros.txdmv.gov or call (800) 299-1700.
What if I have questions about the bond process?
Call TxDMV Motor Carrier Division at (800) 299-1700 or write to the address above.
Final Tips for Smooth Permit Approval
- Always file the bond before submitting your OS/OW permit application.
- Double-check that the Principal name matches exactly on the bond and permit application.
- Keep a copy of the filed bond for your records.
For the most up-to-date information, visit the official TxDMV Permit Surety Bonds page or download the form directly from the Texas Department of Motor Vehicles website.
Need the MCD-439 form right now? Click here to download the official PDF and get your oversize permit bond process started today:
Download MCD-439 PDF
Safe travels on Texas highways! If your operation grows and you need MCR registration later, you may become exempt from this bond requirement. Always verify requirements with TxDMV before every permit season.