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  Am I required to e-file?
  
  The Texas Supreme Court has mandated all attorneys to electronically file documents in a Galveston County Civil/Family/Provate cases through an electronic filing service provider certified by the Office of Court Administration. Pro Se litigants may still hand file their documents. More information about e-filling can be found on the Judicial Committee on Information Technology's website.
  
  Are all trailers or semi-trailers considered special inventory?
  
  State law requires that trailers or semi-trailers weighing 4,000 pounds or less must be registered but not titled. Trailers or semi-trailers of any weight used for farm or ranch purposes must be registered, but are not required to be titled. Untitled trailers are not special vehicle inventory.
  
  Are bats and Purple Martins effective at killing mosquitoes?
  
  Bats and Martins consume some mosquitoes but not any more than they consume other insects. Basically they don’t consume enough to make a difference.
  
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Special Vehicle Inventory Tax

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Welcome to the GCTO Special/Vehicle Inventory Tax online system!

This online portal allows you to file monthly, quarterly* and annual declarations (as well as make payments using a credit or debit card and electronic check) online and is designed to streamline the rendition and payment process, simplifying submission of your annual declaration. It will also provide you with a tool to track your activity. Online renditions are still considered confidential!

* In response to concerns that the reporting of sales by heavy equipment dealers was burdensome, the Texas Legislature passed HB 3424 in the 89th Session (attached below along with revised form). This bill, effective January 1, 2026, provides for quarterly filing of a heavy equipment dealers inventory and tax materials and revises the form. Prepayment and reports are now due on or before the 20th day of the month following each calendar quarter rather than the 20th of each month.

2026 Heavy Equipment Dealer Inventory Form 50-266
HB 3424 Engrossed Version

First time users of the online portal may obtain a login and generic password (reset at initial login) by emailing galcotax@co.galveston.tx.us (enter SIT New User in the subject line). Please include your name, title, dealership name and TxDMV dealer number, address and telephone number. NOTE: Each dealer number will require separate log-ins but a single email user address is adequate. We recommend all dealers set up multiple users.

If you experience difficulties or require assistance, call Jackie at (409) 770-5104. You may also email galcotax@galvestoncountytx.gov and enter SIT Online Help in the subject line along with the nature of assistance needed (for example, assistance needed navigating the portal).

Additional Information

Special inventory is taxable in the county where purchased so vehicles later registered in another county must still report their sales to GCTO. Even trades must be reported (unless to another dealer with a GDN).

Failure to file a monthly rendition by the 10th of month for vehicles and quarterly by the 20th of the month for heavy equipment (even if you have no sales to report) will result in a $500 penalty!