Free South Australia Boat Bill of Sale
Selling a boat privately in South Australia requires registration transfer through Service SA under the Marine Safety section, with stamp duty applied at the same $4 per $100 rate as motor vehicles. All vessels powered by a motor or under sail must be registered in SA, and the sale triggers the same 1-business-day seller notification obligation that applies to car and motorcycle sales.
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South Australia Boat Bill of Sale — What You Need to Know
Stamp Duty / Tax Details
Stamp duty on vessel transfers in SA is $4 per $100 of market value, the same rate as motor vehicles. Duty is assessed on the total vessel value including motor and trailer where included in the sale.
Inspection / Roadworthy Requirements
No government marine inspection is required for private boat sales in SA. The buyer may engage a marine surveyor independently before purchase.
Registration
Registration for this vehicle type is handled by Service SA — Marine Safety / PIRSA — separate from the transfer agency.
South Australia Boat Sale — Step-by-Step Checklist
- Record the vessel's HIN (Hull Identification Number), make, model, year, length, engine type and horsepower, and agreed sale price on the bill of sale.
- Seller lodges a Change of Ownership notification with Service SA within 1 business day.
- Buyer completes the vessel registration transfer at Service SA within 14 days and pays stamp duty at $4 per $100.
- If the boat trailer is included in the sale, complete a separate vehicle transfer for the trailer.
- Run a PPSR check (ppsr.gov.au) to confirm no outstanding marine finance on the hull or engine.
- Confirm the buyer holds a current SA recreational boating licence for the vessel size and engine power.
- Both parties retain signed copies of the bill of sale.
Common Pitfalls
- Omitting the trailer transfer: the trailer is a separately registered vehicle and must be transferred independently — a common oversight that leaves the seller as the recorded trailer owner.
- Not itemising the engine value: on high-value outboard motors, itemising the engine separately can clarify the dutiable value basis and prevent Revenue SA from assessing duty twice on the same motor.
- Assuming interstate registration is valid in SA: vessels registered in other states must be re-registered with Service SA within 3 months of the owner becoming an SA resident.
- Skipping the PPSR check: marine finance on outboard motors and hulls is common and registered on the PPSR — always check before purchase.
Pro Tip
SA's combination of a 1-business-day seller notification window and a $4-per-$100 duty rate makes prompt and accurate documentation essential — lodge the notification online on the day of sale and ensure the bill of sale clearly records the agreed price and the HIN.