Documents you can't sign electronically
Electronic signature coverage is broad, but it isn't unlimited. A small number of document categories fall outside the ESIGN Act of 2000 and most equivalent laws worldwide, or require an extra step beyond a standard electronic signature. Knowing which categories these are can save you from relying on an electronic signature for something that won't actually hold up.
Why these exclusions exist
Laws like the ESIGN Act were written broadly, but lawmakers carved out specific categories where either a long-standing legal tradition (like requiring witnesses for a will) or a separate regulatory regime (like hazardous materials transport) made it impractical or risky to simply extend standard electronic signature rules. These exclusions aren't arbitrary — they usually reflect a document type where the stakes of getting identity or intent wrong are unusually high, or where another law already governs the process in detail.
Categories excluded under the ESIGN Act
In the United States, the ESIGN Act explicitly excludes several categories from its coverage, leaving them subject to traditional rules (typically a handwritten signature, and sometimes witnesses or a notary) unless a more specific law says otherwise:
| Category |
Why it's excluded |
| Wills, codicils, and testamentary trusts |
Long-standing legal tradition generally requires in-person execution, often with witnesses |
| Family law matters (adoption, divorce, and similar) |
Governed by state-specific family law procedures |
| Notices of cancellation or termination of essential services (utilities, health or life insurance) |
Consumer protection concerns around ensuring the notice is actually received and understood |
| Documents required to accompany the transport of hazardous materials |
Governed by separate transportation safety regulations |
| Court orders, official notices, and other documents specifically excluded by law |
Subject to their own procedural rules |
In the European Union, the eIDAS Regulation (EU) No 910/2014 takes a different approach — rather than excluding categories outright, it defines tiers of signature, and certain formal procedures require the highest tier (qualified electronic signature) rather than a simple or advanced one:
- Notarial acts, which traditionally require an in-person process with a notary.
- Filings with public administrations that specifically mandate a qualified signature.
- Certain real estate transactions, depending on the member state.
See eIDAS: simple, advanced and qualified signatures for what a qualified signature specifically requires.
Real estate: it depends on the state and the document
Real estate is a common source of confusion. Many real estate documents — listing agreements, disclosures, inspection reports — can be signed electronically without issue. Certain transactions, particularly the final transfer of property in some jurisdictions, may require a notarized or in-person signature depending on state-specific recording requirements. The exclusion isn't about real estate as a category — it's about specific documents within that category that trigger a separate legal requirement.
When in doubt, check before you rely on it
If you're not sure whether a specific document falls into one of these categories, the safest approach is to confirm with a professional in that area before relying on an electronic signature for it — the exclusions can depend on exact document type and jurisdiction, and getting it wrong for something like a will or a notarized filing can mean the document doesn't hold up at all, rather than just being less convenient.
What this means for most businesses
For the overwhelming majority of commercial and business documents — contracts, NDAs, HR paperwork, vendor agreements, service terms — none of these exclusions apply, and electronic signature works exactly as expected. The excluded categories are narrow and specific; they're not a sign that electronic signature is unreliable in general, just that a handful of document types still follow older, more formal rules.
A quick way to think about it
A useful rough test: if a document type has traditionally required witnesses, a notary, or in-person presence as a matter of long-standing legal tradition — rather than just as a business habit — it's worth checking whether that requirement is specifically preserved under electronic signature law before assuming it isn't. Most business documents never had that kind of formal requirement in the first place, which is exactly why they're unaffected.
Government agencies vary widely in how they handle electronic signatures for their own forms. Some accept them for most routine filings; others still require a wet-ink signature, a specific government-issued e-signature system, or in some cases a notarized submission for particular filing types. Because this depends entirely on the specific agency and form, check that agency's own guidance directly rather than assuming general electronic signature law automatically covers a government filing.
International shipping and customs documents
Some logistics and customs paperwork is subject to international treaties and country-specific customs regulations that can impose their own signature or documentation requirements, separate from general electronic signature law. This is a narrower, more specialized area than most of the exclusions above, and worth checking against the specific regulations of the countries and goods involved if it applies to your business.
This list can change
Laws evolve, and some jurisdictions periodically narrow these exclusions as electronic processes become more standard in formerly paper-only areas (certain notarial processes now support remote online notarization in some US states, for example, which didn't exist when many of these exclusions were first written). If you're regularly working with a document type near one of these edge cases, it's worth checking current rules periodically rather than assuming they're static.
A practical checklist before you send a document for signature
Rather than memorizing the full exclusion list, it's usually faster to ask three questions about any unusual document before sending it out: has this type of document traditionally required a notary, witnesses, or in-person execution as a matter of long-standing legal tradition; is it governed by a separate regulatory regime with its own rules (transportation safety, family law, a specific government agency's filing process); and does the counterparty or jurisdiction involved have any stated requirement naming a specific signature format. If the answer to all three is no — which covers the vast majority of commercial documents — standard electronic signature coverage applies without any special handling.
Use electronic signature where it's designed to work
For the contracts and agreements that do fall within standard electronic signature coverage, Esignapi handles the full process — secure signing links, multiple signers with a configurable order, and a completion certificate with a hash-chained audit trail.
Frequently asked questions
Can I electronically sign a lease agreement?
Yes, residential and commercial lease agreements are generally covered by standard electronic signature laws and are commonly signed electronically.
What about powers of attorney?
Rules on powers of attorney vary by jurisdiction and sometimes by the specific powers being granted — some require notarization or witnesses regardless of signature method. Confirm your jurisdiction's specific requirements before relying on an electronic signature for one.
Is a notarized document the same as a qualified electronic signature?
Not automatically. A document that legally requires notarization needs an actual notarial process; a qualified electronic signature under eIDAS can satisfy certain formal requirements in the EU, but whether it substitutes for notarization depends on the specific jurisdiction and document type.
Do these exclusions apply outside the US and EU?
Many countries have adopted similar carve-outs for wills, family law matters, and formal government filings, since the underlying rationale (long-standing legal tradition, separate regulatory regimes) is common across jurisdictions, but the exact list varies by country.
What happens if I electronically sign a document that's actually excluded?
The signature may simply not be legally effective for that document, which could mean the document isn't enforceable the way you expected. This is exactly why it's worth confirming the category of a specific document before relying on an electronic signature for something unusual.