Signing documents by email and PDF has become normal — but is it actually legal in Sri Lanka? For most everyday business, the answer is yes. Here is what the law says and where the limits are.
The short answer
The Electronic Transactions Act No. 19 of 2006 (amended in 2017) gives electronic signatures the same legal effect as handwritten ones. An electronic signature is legally binding when it reliably identifies the signer and shows their intention to sign. So a signed PDF contract, an agreed email, or a click-to-accept can all be legally valid.
What counts as an electronic signature?
The law is technology-neutral. It can be:
- A scanned or drawn signature placed on a PDF (like the ones our Digital Signature Maker creates).
- A typed name with clear intent to sign.
- A cryptographic digital signature from a certified provider — the most robust form.
The more clearly the method proves who signed and that they meant to, the stronger it is as evidence.
The exceptions — documents that still need ink
The Act specifically excludes certain documents, which still require traditional signatures and formalities:
- Wills and other testamentary documents — these must be in writing and signed before a notary and two witnesses.
- Negotiable instruments (such as cheques and promissory notes).
- Property transfers and deeds — real estate transactions still require notarial execution.
For these, an electronic signature is not enough.
Practical guidance for businesses
- For quotations, invoices, purchase orders, NDAs, service agreements and internal approvals, an e-signature is convenient and legally sound.
- For high-value or disputed contracts, consider a certified e-signature provider that logs identity and timestamps — it is far stronger evidence than a pasted image.
- Always keep the signed final version and a record of how it was agreed (the email thread, the signing log).
A drawn or typed signature image is perfect for the everyday paperwork that keeps a business moving. Just know the handful of documents that still need a pen — and a notary.
This is general information, not legal advice. For important or contested documents, consult a lawyer.
