Guide7 min read4 views
Updated 3 November 2026 · Written by the Wahanaya.lk team
A vehicle sale agreement is a private written contract between buyer and seller that records the price, deposit, condition and transfer date. It isn't a legal requirement, but it protects both sides whenever money changes hands before the RMV/DMT ownership transfer is completed.
A vehicle sale agreement is a private written contract between the buyer and the seller that records the price, the deposit, the vehicle's details and the date ownership will change hands. It is separate from the RMV/DMT transfer form — the agreement is between you and the buyer, while the transfer form is what actually changes legal ownership at the Department of Motor Traffic (DMT).
Most private sales in Sri Lanka don't legally require a written agreement if the buyer pays in full and you transfer the vehicle on the same day. But the moment there's a deposit, a gap between payment and transfer, or any condition attached to the sale, a written agreement is what protects you if something goes wrong later.
At minimum, write down the full names and NIC numbers of both buyer and seller, the vehicle's registration number, make, model, chassis number, engine number and current mileage, the agreed sale price, the deposit amount (if any) and the balance payment terms, the date by which the ownership transfer will be completed at the DMT, and a short statement of the vehicle's condition at the time of sale — for example, "sold as seen, test driven and inspected by the buyer." Date the agreement, have both parties sign every page, and get at least one witness to sign as well.
If you're selling through Wahanaya's listings and already used price-check to settle on a fair figure, use that same price consistently across your ad, your agreement and your DMT declaration — inconsistent numbers are one of the easiest ways to trigger questions later.
Spell out exactly what happens to the deposit before anyone hands over money. The common private-sale practice in Sri Lanka is that if the buyer backs out without a valid reason, the deposit is forfeited to the seller as compensation for taking the vehicle off the market; if the seller backs out, the deposit is refunded in full, sometimes with an extra amount agreed as compensation for the buyer's wasted time. None of this is automatic — it only applies if you write it into the agreement in plain words both parties agree to before signing.
Avoid taking a large deposit in cash without a receipt. Write the deposit amount, the date it was paid, and the payment method (bank transfer, cheque, cash) directly into the agreement, and keep your bank slip or transfer confirmation as backup proof.
A plain signed agreement with one or two independent witnesses is normally enough for a private vehicle sale in Sri Lanka. You don't need a lawyer or a notary to make the agreement valid between you and the buyer. That said, if the sale involves a large sum, a longer gap before transfer, or you simply want extra peace of mind, having the signatures attested by a Justice of the Peace, Grama Niladhari, or a notary adds weight if there's ever a dispute — it isn't a legal requirement, just an extra layer of proof.
The sale agreement and the DMT transfer are two separate steps. The agreement is your private record of what was agreed between you and the buyer. The actual change of legal ownership only happens when both of you complete the DMT's ownership transfer forms, hand over the registration certificate (CR book) and any required letters, and pay the transfer fee and stamp duty. Sri Lanka has also moved toward more of this process being handled online through DMT systems, so check the current submission method at your nearest DMT office or Divisional Secretariat before you go.
Until the DMT transfer is completed, the vehicle is still legally registered to the seller, even if a sale agreement has been signed and money has changed hands. This matters for revenue licence renewals, traffic fines and insurance — all of which stay tied to the registered owner until the transfer goes through. Don't delay the DMT step once you've signed the agreement and received payment.
If the clauses in your agreement are clear, this is straightforward: whoever backs out loses or returns the deposit exactly as written. If the agreement is vague or undated, disputes get harder to resolve, and you may end up relying on general contract principles rather than anything specific you agreed. This is exactly why a few extra lines about deposits, deadlines and cancellation are worth the effort before any money is paid.
If the buyer is paying through vehicle leasing rather than their own funds, there are extra steps around the leasing company's disbursement and documentation — see our separate guide on selling when the buyer is financing through a lease for that process.
Don't leave the price blank or write a lower "under the table" figure to reduce fees — DMT checks declared value against market data, and a mismatch between your agreement and your transfer declaration can cause delays or questions. Don't skip the chassis and engine numbers; a vague description without these makes the agreement weak as proof of which vehicle was actually sold. Don't accept a large deposit without writing down how it's protected, and don't let too long a gap pass between signing the agreement and completing the DMT transfer — the longer the gap, the more can go wrong with revenue licences, fines or a change of mind on either side.
Before you even get to the agreement stage, make sure you've verified the vehicle's identity and paperwork properly — our safety tips page covers what to check so you don't end up negotiating over a vehicle with a hidden problem.
If you're not sure how to word a particular clause, or you run into a tricky situation like a buyer wanting to pay in installments, ask in the Wahanaya forum — other sellers who've been through the same thing can point out what worked for them. And once you're ready to list, you can post your ad on Wahanaya to reach serious buyers.
When a buyer pays through a lease or bank loan, their finance company sends an approved valuer to inspect your car and registers itself as absolute owner on the CR book before you get paid, so expect extra paperwork and a short delay versus a cash sale.
Wahanaya.lk team8 min read
The safest payment is a bank transfer or bank draft you verify yourself by checking your own banking app or calling your bank — never a screenshot the buyer sends you. Don't hand over the CR book, keys or signed MTA 6 form until the money has actually settled in your account.
Wahanaya.lk team7 min read
Yes — the DMT's ownership-transfer system checks that your vehicle's VET (emission test) certificate and revenue licence are both in date before it lets the transfer go through, so renew an expired VET before you sell, unless your vehicle is exempt.
Wahanaya.lk team7 min read
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