A tenancy agreement signed in Singapore must be stamped within 14 days of execution, yet many companies only discover this when a dispute reaches court. The Inland Revenue Authority of Singapore (IRAS) treats stamping as a legal precondition, not a formality.
In this blog, we discuss how stamp duty on business agreements works in Singapore. We cover dutiable commercial documents, deadlines, 2026 rates, exemptions and the consequences of leaving a contract unstamped.
What Does Stamp Duty Cover for Singapore Commercial Documents?
Stamp duty is a tax on the legal instrument itself, not the underlying commercial transaction, and it attaches the moment the document is signed.
Under the Stamp Duties Act, duty is chargeable on documents dealing with immovable property, shares, and chargeable security arrangements. The Inland Revenue Authority of Singapore (IRAS) administers the duty and offers an e-stamping portal for most instruments.
The charge is generally ad valorem, meaning it scales with the consideration paid or the market value, whichever is higher. A nominal flat duty applies to a small number of instruments. As at 2026, the categories of dutiable business documents remain largely unchanged, but rates and reliefs should always be checked against IRAS's published schedule before execution.
Which Business Agreements Attract Stamp Duty in Singapore?
Dutiable business documents generally fall into four categories: property conveyances, leases, share transfers, and loan or security instruments.
Many business owners assume duty applies only to residential property. An office lease and a share transfer may be dutiable, but a bank facility agreement is generally not dutiable unless it includes a chargeable mortgage, agreement for mortgage or debenture.
Before signing, companies should confirm whether a document is dutiable, because the obligation arises automatically upon execution.
Businesses undertaking company incorporation in Singapore should assess any related property or share transfers before execution. The same is true of a conversion from sole proprietorship to private limited company.
1. Property Sale and Purchase Documents
The Buyer's Stamp Duty applies to the purchase or gift of any immovable property, including offices, factories, warehouses and shophouses. An option to purchase is generally dutiable when the buyer accepts the option, not merely on completion.
Businesses converting a sole proprietorship into a private limited company should note that transfers can trigger duty. This includes moving premises or other real assets into the new entity. Non-residential property attracts tiered Buyer’s Stamp Duty rates of 1% to 5%.
2. Lease and Tenancy Agreements
Commercial leases with an average annual rent (AAR) above $1,000 attract duty at 0.4% of total rent for a lease of four years or less, or 0.4% of four times the AAR for a longer or indefinite lease. Renewal agreements and extensions are separately dutiable.
Leases with an AAR of $1,000 or less are exempt. The tenancy agreement usually states who pays the duty. Where it is silent, the Stamp Duties Act makes the tenant liable.
3. Share Transfer and Share Purchase Documents
Transfers of shares in private companies attract duty at 0.2% of the purchase price or value, whichever is higher; value is generally NAV for companies incorporated for more than 18 months and may be the allotment price for younger companies without property. The duty must be paid before the company registers the transfer in its register of members; the updated shareholding is then reflected in the company's ACRA filings as required.
This point matters in group restructurings, management buyouts and later share transfers following company incorporation in Singapore. A new allotment of shares is not itself a share transfer instrument.
4. Loan and Security Instruments
A loan agreement not relating to property or shares is generally not dutiable. A non-equitable mortgage, agreement for mortgage or debenture of property or shares is charged at 0.4% of the secured amount, capped at $500, while an equitable mortgage is charged at 0.2%, capped at $500.
Most banks require evidence of stamping before releasing funds, so late stamping can delay drawdowns.
5. Documents That Are Not Dutiable
Ordinary service agreements, employment contracts, non-disclosure agreements and contracts for the sale of goods do not attract stamp duty. However, if a transaction contains a property, share or security element — for example, an asset purchase that includes premises — the document should be reviewed before signing.
When Does the Deadline for Stamping Begin?
The deadline is 14 days after execution in Singapore or 30 days after an overseas document is received in Singapore.
According to IRAS, the Singapore deadline is triggered by execution, not by when the transaction completes. An option to purchase accepted by the buyer in February is dutiable in February, even if completion occurs months later.
Where parties sign on different dates, the deadline is reckoned from the day after the instrument is first executed. For documents signed overseas, the 30-day period starts when they are received in Singapore. Companies executing regional agreements for a foreign parent should track that receipt date carefully.
A practical stamping workflow looks like this:
1. Confirm the Instrument Is Dutiable
Check the document against the categories above, or seek confirmation from a Corporate Services Provider. Misclassification is a common source of late stamping.
2. Compute the Duty Payable
Use the calculators on IRAS's e-stamping portal to derive the duty from the consideration, rent or secured amount. Valuations may be needed where consideration is not readily ascertainable.
3. Stamp the Document Within the Deadline
Duty can be paid and the document stamped online through e-stamping, or at the e-kiosks at IRAS's Taxpayer & Business Service Centre. Payment can be made by electronic means accepted by IRAS.
4. Retain the Stamp Certificate
The certificate of stamping is the evidence of compliance. Banks, ACRA, the courts and counterparties will ask for it when the document is relied upon.
Stamping Deadlines for Business Documents
| Where the document is executed | Deadline for stamping | Common business examples |
|---|---|---|
| In Singapore | Within 14 days of the date of execution | Commercial leases, share transfer forms, local facility documents |
| Overseas | Within 30 days after the document is first received in Singapore | Regional agreements signed by a foreign parent company |
| On different dates by the parties | Reckoned from first execution | Cross-border contracts exchanged in counterparts |
How Much Is Stamp Duty on Singapore Business Contracts?
As at 2026, Buyer's Stamp Duty on property purchases runs in tiers from 1% to 5% for non-residential and 1% to 6% for residential property. Leases are charged at 0.4%, most security documents at 0.4% (capped at $500), and share transfers at 0.2%.
In practice, stamp duty on business agreements is calculated from the higher of the stated consideration or market value, or, for leases, the higher of contractual rent or annualised market rent. The tables below set out the rates as at 2026, confirmed against IRAS's published schedule.
Consider a three-year office lease at $10,000 per month. The total rent for the lease period is $360,000, and the duty is 0.4% of that total rent — $1,440. A share transfer priced at $500,000, where the consideration exceeds net asset value, attracts $1,000. A $2 million secured facility attracts duty capped at $500.
Companies purchasing residential property for staff housing should note that residential Buyer's Stamp Duty rises to a top marginal rate of 6% from 15 February 2023. An entity buying any residential property also pays Additional Buyer's Stamp Duty of 65%.
Buyer's Stamp Duty on Non-Residential Property (as at 2026)
| Purchase price or market value | Rate |
|---|---|
| First $180,000 | 1% |
| Next $180,000 | 2% |
| Next $640,000 | 3% |
| Next $500,000 | 4% |
| Remaining amount | 5% |
Lease Duty Rates for Commercial Tenancy Agreements
| Lease term | Duty basis |
|---|---|
| AAR of $1,000 or less | Exempt |
| Lease of 4 years or less | 0.4% of the total rent for the lease period |
| Lease of more than 4 years or indefinite | 0.4% of 4 times the AAR |
| Lease with a premium | Premium charged at Buyer's Stamp Duty rates, plus lease duty on any rent |
Duty on Other Common Business Instruments
| Instrument | Duty basis | Rate as at 2026 |
|---|---|---|
| Unlisted share transfer | Consideration or share value (generally net asset value), whichever is higher | 0.2% |
| Listed share transfer document | The price paid or the average SGX price, whichever is higher | 0.2% |
| Loan or security document | The secured amount | 0.4% (0.2% for an equitable mortgage), capped at $500 per instrument |
What Are the Consequences of Late or Missed Stamping?
Late stamping attracts a monetary penalty that can escalate to four times the original duty, and an unstamped document is generally inadmissible in court.
Under the Stamp Duties Act, a document that is chargeable with duty must be stamped before it can be given in evidence before a Singapore court. This rule turns an administrative oversight into a live litigation risk.
The penalty follows a fixed scale, although a penalty waiver can be appealed to IRAS where there is good reason for the delay. Businesses should nevertheless treat the 14-day and 30-day windows as hard deadlines.
1. Monetary Penalties
IRAS imposes a penalty on documents stamped after the deadline. If payment is up to 3 months late, the penalty is $10 or an amount equal to the duty, whichever is greater. Beyond 3 months, it is $25 or four times the duty, whichever is greater. Late stamping remains possible, but at a price.
2. Loss of Evidentiary Force
An unstamped instrument is generally inadmissible as evidence in court until it is stamped and the penalty paid. In a tenancy or shareholder dispute, this can delay proceedings materially at the worst possible moment.
3. Blocked Transactions
Unstamped share transfers cannot be registered in the company's register of members, and banks routinely reject unstamped leases or security documents. Late stamping therefore delays completions, refinancings and corporate restructurings.
Conclusion
Stamp duty on business agreements is triggered by execution, not by completion, and the deadlines are short. Companies should review leases, share transfers, facility documents and property contracts before signing. They should compute the duty early and stamp within 14 days after execution in Singapore. For documents signed overseas, stamping is due within 30 days after receipt in Singapore.
The commercial risk of getting this wrong is real. Penalties can multiply the duty, court proceedings can stall on inadmissible documents, and unstamped share transfers cannot be registered in the company's register of members. Stamping also sits alongside a company's wider compliance calendar. This includes the YA 2026 Corporate Income Tax Return, due by 30 November 2026. It also includes GST registration once turnover thresholds are approached.
As a Singapore-based Corporate Services Provider, 3E Accounting Singapore supports startups, SMEs and multinational companies with incorporation, taxation and ongoing compliance. We can review your business agreements, compute the applicable duty and arrange stamping through IRAS's e-stamping portal. This helps keep every contract enforceable from day one.
Ensure Every Business Agreement Is Stamped on Time
Our corporate services team reviews your contracts, computes the duty and arranges IRAS stamping before the deadlines bite. Reach out to discuss your documents.
Frequently Asked Questions
No. Duty applies only to documents dealing with immovable property, shares, and loans or security arrangements. Ordinary service agreements, employment contracts and sale of goods contracts are not dutiable.
The document must be stamped within 14 days of execution if signed in Singapore. If signed overseas, it must be stamped within 30 days after receipt in Singapore, as set out by IRAS.
The tenancy agreement usually states who pays the stamp duty. Where it does not, the Stamp Duties Act makes the tenant liable. The duty is 0.4% of the total rent for a lease of four years or less, or 0.4% of four times the average annual rent for a longer lease. Leases with an average annual rent of $1,000 or less are exempt.
Yes. Transfers of unlisted shares attract duty at 0.2% of the consideration or the value of the shares (generally their net asset value), whichever is higher, and the document must be stamped before the company registers the transfer in its register of members and the updated shareholding is reflected in ACRA filings.
Generally no. Under the Stamp Duties Act, a dutiable document must be stamped, with any penalty paid, before it can be admitted in evidence before a Singapore court.
Abigail Yu
Director
Abigail Yu oversees executive leadership at 3E Accounting Group, leading operations, IT solutions, public relations, and digital marketing to drive business success. She holds an honors degree in Communication and New Media from the National University of Singapore and is highly skilled in crisis management, financial communication, and corporate communications.
