Work out stamp duty on lease instantly with clear inputs, formula shown and shareable results.
Lease stamp duty is charged on the aggregate rent over the term, with a notional addition for any interest-free security deposit because it confers a benefit on the landlord. Ten percent of the deposit is a common convention. Longer terms therefore attract proportionally more duty, which is why some tenants prefer shorter terms with renewal options.
Duty base
Base = average annual rent x term + 10 percent of the security deposit
Duty
Duty = base x applicable stamp duty rate
Preliminary estimate only. Stamp duty rates and the treatment of deposits and options vary by jurisdiction and must be confirmed with a local adviser.
Base = average annual rent x term + 10 percent of the security deposit. Lease stamp duty is charged on the aggregate rent over the term, with a notional addition for any interest-free security deposit because it confers a benefit on the landlord.
Frequently yes. Many jurisdictions treat an option period as part of the term for duty purposes, so the base includes it whether or not the option is exercised.
This calculator takes 4 inputs: Average annual rent, Lease term, Stamp duty rate, Security deposit. The pre-filled defaults are a realistic worked example — replace them with your own site or project figures.