E-Signature vs Wet Signature: What SA Businesses Need to Know

For decades, South African businesses have relied on wet ink signatures — printing a document, signing it by hand, scanning it, and emailing it back. This process is slow, error-prone, and completely unnecessary for most modern business documents. Here's what you need to know about the difference and when each applies.

What is a wet signature?

A wet signature is a handwritten signature applied with ink — traditionally by pen on paper. The term "wet" refers to the ink being wet when applied. Wet signatures have been the standard for legal documents for centuries and remain required for a specific category of documents under South African law.

What is an electronic signature?

An electronic signature is any data used to indicate a person's approval or authentication of a document in digital form. This includes typed names, drawn signatures, checkbox confirmations, and the audit trail approach used by SignZA — capturing name, IP address, device, and timestamp at the moment of signing.

Under the Electronic Communications and Transactions Act (ECT Act) 25 of 2002, electronic signatures are recognised as legally equivalent to wet signatures for most documents.

Comparing the two

Factor	Wet signature	Electronic signature
Speed	Hours to days (print, sign, scan, email)	Minutes
Cost	Printing, courier, storage costs	Monthly subscription (from R0)
Audit trail	None — no way to verify when or where it was signed	Full: name, IP, device, timestamp, document hash
Legality (SA)	Always valid	Valid for most commercial documents under ECT Act
Storage	Physical filing or manual scanning	Automatic — secured digitally for 7 years
Accessibility	Must be physically present or use courier	Sign from any device, anywhere in the world
Forgery risk	Higher — no real-time verification	Lower — audit trail provides identity evidence

When each is appropriate in South Africa

Use an electronic signature for:

Service agreements and contracts
Non-disclosure agreements (NDAs)
Employment contracts
Engagement letters and letters of appointment
Lease and rental agreements (initial agreement stage)
Purchase orders and supplier agreements
Financial statements and management accounts (for client approval)
Insurance documents (most categories)
Consent forms

Situations that may still require wet ink or advanced e-signature:

Wills and testamentary documents
Deed of sale for immovable property (the formal transfer deed — not the initial offer)
Negotiable instruments (cheques, promissory notes)
Documents requiring a Commissioner of Oaths
Notarised documents
Certain court documents

If you're dealing with a property transaction, get legal advice on which stage requires what type of signature. The initial offer to purchase can often be electronic; the transfer deed at the Deeds Office cannot.

Industries leading the shift to e-signatures in South Africa

South African businesses that have benefited most from adopting e-signatures include:

Accounting and auditing firms — engagement letters, representation letters, financial statements
Property and real estate — lease agreements, mandates, offer to purchase
Recruitment and HR — employment contracts, offer letters, policy acknowledgements
Financial services — client onboarding, consent forms, investment mandates
Legal practices — retainer agreements, client intake forms
Healthcare — consent forms, referral authorisations

💡 Tip: The "print, sign, scan, email" workflow costs South African businesses an average of 15–30 minutes per document. For a business sending 20 documents a month, that's up to 10 hours saved — time better spent on billable work.

Frequently asked questions

Can I mix electronic and wet signatures on the same document?

Technically yes, but it creates complications. If you need certainty, choose one method for the entire document.

What if the other party insists on a wet signature?

You can't compel another party to accept an electronic signature — mutual agreement is required. However, most South African businesses now routinely accept e-signatures for commercial documents.

Are e-signatures recognised outside South Africa?

Many countries have similar e-signature laws (the EU's eIDAS, the US ESIGN Act, the UK's Electronic Communications Act). For cross-border contracts, confirm that both countries' laws recognise electronic signatures for the document type in question.