The rental stamp duty calculator works out the stamp duty payable on a Singapore tenancy agreement, based on your monthly rent and the length of the lease. It gives tenants and landlords the exact figure to stamp a lease correctly with IRAS.
What this calculator does
When you sign a lease for a property in Singapore, the tenancy agreement must be stamped, and stamp duty is payable on it, usually by the tenant unless the agreement states otherwise. This calculator takes your monthly rent and the lease period and returns the stamp duty due, so the agreement can be stamped within the required timeframe and avoid penalties.
It removes the guesswork from a small but easily overlooked cost that applies to every new lease and many renewals.
How rental stamp duty is calculated
Lease stamp duty in Singapore is based on the Average Annual Rent (AAR) and the duration of the lease. The rate is 0.4%, but how it is applied depends on the term:
- For a lease of four years or less, stamp duty is 0.4% of the total rent payable over the entire lease period.
- For a lease of more than four years, or for an indefinite term, stamp duty is 0.4% of four times the Average Annual Rent.
If the rent is variable, includes other consideration such as a service charge, or the lease has unusual terms, the chargeable amount is adjusted accordingly. The calculator applies the correct treatment based on your inputs.
A worked example
For a two-year lease at S$3,500 per month, the total rent over the lease is S$84,000. Stamp duty at 0.4% comes to S$336. For a longer six-year lease at the same rent, the duty is 0.4% of four times the annual rent (4 × S$42,000 = S$168,000), which is S$672. The calculator produces these figures instantly once you enter the rent and term.
Who should use it
Tenants use it to know the cost of stamping before signing, since they are usually responsible for the duty. Landlords and property agents use it to advise tenants accurately and ensure the lease is stamped on time. Companies leasing office or staff accommodation use it to budget the duty across multiple agreements.
Why stamping on time matters
A tenancy agreement should be stamped within 14 days of signing if executed in Singapore (30 days if overseas). Late stamping can attract penalties of up to four times the duty. A stamped lease is also the version recognised in evidence should any dispute arise. Knowing the exact amount in advance lets you complete the IRAS e-Stamping process promptly and keep the tenancy legally sound.
Frequently asked questions
Who pays stamp duty on a tenancy agreement in Singapore?
By convention the tenant pays, but the lease can assign the cost to either party. Check what your agreement specifies.
How much is stamp duty on rent in Singapore?
It is 0.4% of the total rent for leases of four years or less, or 0.4% of four times the average annual rent for longer leases.
When must I stamp my tenancy agreement?
Within 14 days of signing if the agreement is signed in Singapore, or within 30 days if signed overseas. Stamping is done through the IRAS e-Stamping portal.
Is stamp duty payable on a lease renewal?
Yes. A renewal or extension creates a fresh chargeable period, so stamp duty applies to the renewed term as well.
What happens if I stamp late?
IRAS may impose a penalty, which can be several times the duty amount for significant delays. Stamping promptly avoids this.
This guide reflects rental stamp duty rules current in 2026 and is for general information only. Stamp your lease via the IRAS e-Stamping portal and confirm any unusual treatment with IRAS.
Sarah Chen
