Just Sold My Car in Montana — What’s Next? (2026)
Need Montana bill of sale documentation?
If you haven’t generated a Montana-compliant bill of sale yet, do it now — your proof-of-sale window closes the moment the buyer leaves.
Start My Montana Car Bill of Sale →Montana car sale facts
| Titling agency | Montana DMV ↗ |
| Title transfer deadline | 40 days from sale |
| Release of liability | File with Montana DMV within 5 days |
| Buyer’s sales / use tax | Private-party exempt (Montana has no state sales tax on any purchases) |
| Bill of sale notary | Not required |
| Title fee (buyer pays) | $12 |
| Car identifier | VIN |
Your Montana car post-sale checklist
- 1
Keep your signed Montana bill of sale
This is your proof that you sold the car on the sale date. If the buyer gets a ticket, is in an accident, or fails to transfer the title within 40 days from the sale date, the Montana bill of sale shields you from liability. Keep both your copy and a scan for at least 5 years.
- 2
File a release of liability with Montana DMV
Most Montana sellers file this online through Montana DMV within 5 days of the sale. Filing removes you from records as the registered owner so any post-sale tickets, tolls, or accidents become the buyer's responsibility, not yours. Montana requires the buyer to title the car within 40 days — your release filing protects you if the buyer misses that deadline.
- 3
Cancel or transfer your auto insurance
Contact your insurer the same day you hand over the keys. Montana does not require you to maintain insurance on a vehicle you no longer own, but you must not cancel before the sale is complete. If you are replacing the car with another, transfer the policy instead — many insurers offer a short grace period to bind coverage on the new vehicle.
- 4
Remove your license plates
In Montana, plates go with the seller — not with the car. Remove the plate(s) before the buyer drives or rides away. You can return them to Montana DMV or transfer them to your next vehicle.
- 5
Verify the 40-day title transfer window
Montana requires the buyer to retitle the car at Montana DMV within 40 days of the sale date. If you have not received confirmation that the title has been transferred by day 45, contact Montana DMV with your bill of sale and release-of-liability filing number to confirm the change of ownership.
- 6
Confirm your Montana tax obligations (seller's side)
Montana does not impose state sales tax on private-party car sales (Montana has no state sales tax on any purchases). The buyer typically pays a flat title fee (~$12) at Montana DMV. If you sold the car for more than your original purchase price, you may owe federal capital gains — most private car sales are at a loss and not taxable.
- 7
Watch for liens or loan payoff confirmation
If you had a loan on the car, confirm the lender received the buyer's payoff and has released the lien on the Montana title before you deliver the title. Montana uses MV21 (Title Lien Notation Release) as the lien release form — your lender will file this with Montana DMV to clear the title record.
Montana lien release procedure
- Obtain Form MV21 from the Montana DOJ Motor Vehicles Division or the lienholder.
- Lienholder completes and signs MV21 releasing the lien.
- Submit MV21 with the existing title and title application at a county courthouse.
- Pay the title fee and receive a clean Montana title.
Frequently Asked Questions — Montana
How long do I have to file a release of liability in Montana?▾
Montana sellers should file a release of liability with Montana DMV within 5 days of the sale. Most Montana sellers can file this online directly through Montana DMV. Filing removes you from records as the registered owner so any post-sale tickets, tolls, or accidents fall on the buyer.
What is the Montana title transfer deadline for a car?▾
Montana requires the buyer to title the car within 40 days of the sale date. Missing the deadline can trigger late fees and back-dated registration penalties.
Do I owe Montana sales tax on the car I just sold?▾
Montana does not impose state sales tax on private-party car sales. Montana has no state sales tax on any purchases. Sellers generally owe no Montana sales tax. You may owe federal capital gains tax if the car sold for more than your original purchase price — most private sales are at a loss and not taxable.
Does Montana require a notary on the car bill of sale?▾
No. Montana does not require notarization for a private car bill of sale. A signed bill of sale with both parties' full names, addresses, signatures, and the date is sufficient for Montana DMV.
How does the buyer register the car in Montana?▾
The buyer brings the signed bill of sale and endorsed title to Montana DMV, pays the title fee (~$12) plus any applicable use tax, and receives a new Montana title in their name. Transfer must be completed within 40 days of the sale date.
What if the buyer hasn't transferred the title yet?▾
In most states this is the buyer's responsibility, not yours. Filing a release of liability with your state DMV is the seller-side protection — it removes you from records as the registered owner so any post-sale tickets, accidents, or tolls fall on the buyer regardless of when the title is actually transferred.
Do I need to keep the bill of sale after the sale is complete?▾
Yes — keep your signed bill of sale for at least 5 years. If a parking ticket, toll, or accident occurs after the sale but before the buyer transfers the title, the bill of sale is your proof that the car was sold on the sale date. Store a scan and the original.
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Source: Montana DMV ↗ · Last verified 2026-05-07