Company Seals in Singapore: When You Still Need One (2026 Guide)

Singapore is one of the clearest examples of a jurisdiction where the company seal has moved from legal requirement to business convention — and where the two are easy to confuse. Founders arriving from Hong Kong, China or Malaysia often assume the seal carries the same weight it does at home. It does not. But the opposite conclusion — that you can operate without any company stamp at all — turns out to be just as wrong in practice.

This guide separates the three things that get conflated: what the law requires, what counterparties expect, and what a stamp actually proves.

What the law says

Since the Companies (Amendment) Act 2017, Singapore companies are not required to have a common seal. Documents that previously needed the seal — including deeds — can instead be executed by signature: either two directors, a director and the company secretary, or a director whose signature is witnessed. The change removed one of the last hard legal uses of the seal for private companies.

Two consequences follow that are worth stating plainly:

A company that has never owned a seal can still execute a deed. There is no category of document that a Singapore private company is locked out of for lack of a seal.
A company that does keep a seal has not thereby created a new signing authority. The seal binds nothing on its own; the authorised signatures do the work. If your constitution sets out a procedure for affixing the seal, follow it — but the procedure is an internal governance matter, not the source of the document's validity.

The Electronic Transactions Act separately gives electronic signatures legal recognition, and Singapore was an early adopter of the UNCITRAL model rules on electronic transferable records, so even trade documents are steadily going paperless. Certain instruments — wills, some property conveyances, negotiable instruments — sit outside the general e-signature regime, which is the usual reason a transaction still lands on paper.

What practice still expects

None of that stopped the company rubber stamp from being a daily fixture. In practice you will still be asked for a round or rectangular company stamp when you:

open or operate a corporate bank account (many banks ask for a stamp on resolutions and forms),
issue invoices, quotations and delivery orders to counterparties across Southeast Asia who expect stamped documents,
deal with landlords, suppliers or government-facing paperwork where a stamp signals the document passed through the company, not just an individual,
submit tender and prequalification packets, where the reviewing clerk is working from a checklist rather than from company law,
certify copies of the ACRA business profile, constitution or director resolutions for a third party.

The stamp has no independent legal magic — it is evidence of company involvement, not a substitute for authorized signatures. But refusing to have one creates friction that costs more than the stamp does. The realistic posture for a new Singapore company: get a stamp, use it where it smooths a process, and never let anyone tell you the stamp is what makes a document binding.

The bank question, specifically

Bank practice is where most founders first hit this. Requirements differ by bank and by product, and they change. Some banks dropped the stamp requirement entirely for digitally onboarded accounts; others still ask for it on board resolutions, mandate forms and cheque-related paperwork. Two practical notes:

Ask before you order. If your bank wants a stamp, it may also have a preference about ink colour or about whether the UEN appears on the impression.
Whatever impression the bank records, keep using that one. A second stamp with slightly different wording invites queries later.

What a Singapore company stamp looks like

The most common formats:

Round stamp: company name curved around the rim, registration (UEN) number and "SINGAPORE" along the lower arc, and a plain center or the word "OFFICIAL" — see the corporate seal template for the layout.
Rectangular endorsement stamp: company name, UEN, address and sometimes "For and on behalf of…" above a signature line.

The UEN is the detail most often left off and most often asked for. Singapore UENs follow a fixed pattern — for a company incorporated from 2010 onward it is the year, a sequential number and a check letter (for example 202312345A). Including it turns a generic stamp into one that identifies your company unambiguously, which is exactly what the reviewing party wants.

Blue or black ink is standard; red is common for companies with Chinese business ties. You can assemble either style in the online seal generator in a few minutes and export a transparent PNG for digital documents or an SVG for a stamp maker.

Sizing and legibility

A round company stamp is typically 38–42mm across. That is enough for a company name of moderate length plus the UEN; it is not enough for a long name, a UEN, an address and a tagline. If your registered name is long, drop the address rather than shrinking the type — an impression that smudges into illegibility on a photocopy defeats the purpose. Export at 300 DPI if the stamp will be printed, and check the result at actual size rather than zoomed in.

Digital use

For PDFs, place a transparent stamp image with the PDF stamping tool — useful for invoices and quotations where the counterparty expects a stamped look. For contracts where enforceability matters, pair it with a proper e-signature platform; the stamp image itself doesn't prove who applied it. The boundary is explained in electronic seal vs. electronic signature and are image seals legally valid?.

A stamp image file deserves the same care as a signature image. Anyone who receives a clean, high-resolution PNG of your company stamp can apply it to anything. Keep the master file out of shared drives that contractors can browse, prefer flattened output when you send documents onward, and see the seal file management guide for the handling habits that matter.

Common mistakes

Treating the stamp as authority. A stamped document signed by someone without authority does not bind the company; an unstamped document signed by two directors generally does.
Ordering the stamp before the name is final. ACRA name approval can come back with a variation. Wait for incorporation.
Using the trading name instead of the registered name. The registered name is what a counterparty verifies against ACRA.
Letting the UEN drift. If the company is struck off and re-registered, or converts entity type, the UEN may change — the stamp must follow.
Assuming a seal from another jurisdiction transfers. A Chinese 公章 carved for a related entity is not your Singapore company's stamp, and using it that way muddles which legal person is contracting.

FAQ

Is a company seal legally required in Singapore? No — since 2017 the common seal is optional and signatures can execute deeds.

Do banks require a company stamp? Many still ask for one on account forms and board resolutions as a matter of internal policy. Check with your bank before assuming either way.

Does stamping a contract make it binding? The signatures of authorized persons bind the company. The stamp adds evidentiary weight and meets counterparties' expectations, nothing more.

Should the UEN appear on the stamp? It is not mandatory, but it is the single most useful element to include — it lets anyone verify the entity against ACRA records.

Can I use a digital image of the stamp on invoices? Yes, and it is common. Treat it as a presentation element; where the document must be enforceable, rely on the signature mechanism, not the image.

Does a foreign company operating in Singapore need one? A registered branch faces the same practical expectations as a local company. Whether the parent's seal may be used depends on the parent's own constitution and the branch's authority — worth confirming with your corporate secretary.

This article is general information, not legal advice. Rules change — verify current requirements with ACRA or a qualified professional.