1. How NSW Transfer Duty Works
Transfer duty in New South Wales β commonly called stamp duty β is charged by Revenue NSW on the dutiable value of a property transfer:
- Dutiable value is the purchase price, or the unencumbered market value if higher (Revenue NSW can and does assess market value on transactions that look underpriced).
- Duty is calculated as a series of progressive slices: each bracket's rate applies only to the portion of the price inside that bracket, not the whole price β like income tax bands.
- Liability arises at the date of the contract, and payment is required within 3 months of the liability date (or on settlement, whichever comes first). Lenders will not release funds until duty is paid and the transfer is lodged through NSW Land Registry Services.
- Duty is a one-off transactional cost β there is no annual state property tax in NSW (land tax is a separate annual charge on investment properties, and owner-occupiers generally receive a principal-place-of-residence exemption).