Instructions on Utilizing St 108
Filling out the ST-108 form is an important step in the process of purchasing a motor vehicle or watercraft in Indiana. This form certifies that the sales or use tax has been paid, which is necessary for titling the vehicle or watercraft. Completing this form accurately ensures that both the dealer and the purchaser comply with state regulations.
- Gather Required Information: Collect all necessary details about the dealer and the vehicle or watercraft.
- Dealer Information: Enter the name of the dealer as it appears on the Registered Retail Merchant Certificate.
- Dealer’s RRMC #: Input the Indiana Taxpayer Identification Number and Location Number in the format 0001234567-001.
- Dealer’s FID #: Provide the Federal Identification Number of the dealer, if applicable.
- Dealer’s License Number: Fill in the seven-digit Dealer’s License Number as shown on the Dealer’s License Certificate.
- Address of Dealer: Write the complete address of the dealer as listed on the Registered Retail Merchant Certificate.
- Purchaser Information: Enter the name of the purchaser(s) in print or type format.
- Purchaser’s Address: Fill in the address of the purchaser, including city, state, and zip code.
- Vehicle Identification: Provide the VIN# (Vehicle Identification Number) or HIN# (Hull Identification Number).
- Year, Make, and Model/Length: Specify the year, make, and model of the vehicle or the length of the watercraft.
- Total Selling Price: Calculate the total selling price, including all associated costs, but excluding federal excise tax.
- Trade-In Allowance: If applicable, indicate the trade-in allowance for like-kind vehicles or watercraft, including their details.
- Amount Subject to Tax: Calculate this by subtracting the trade-in allowance from the total selling price.
- Amount of Tax Collected: Multiply the amount subject to tax by 7% (0.07) to find the total tax to be collected.
- Signature Section: The seller must sign the form, certifying that the sales/use tax has been collected and will be forwarded to the Department of Revenue.
- Date: Enter the date of signing the form.
- Printed Name of Seller: Provide the printed name of the seller.
- Title: Indicate the title of the seller.

