The ESIGN Act Explained: U.S. Electronic Signature Law

If you've ever wondered whether e-signatures are 'really legal' in the U.S., the answer has been yes since 2000. The ESIGN Act establishes that electronic signatures cannot be denied legal effect simply because they are electronic.

The short version

United States (Electronic Signatures in Global and National Commerce Act, 2000; Uniform Electronic Transactions Act adopted by 49 states): electronic signatures are legally enforceable for the overwhelming majority of business and personal documents. The exceptions are narrow and predictable. If you're using a reputable e-signature platform with an audit trail, you are almost certainly compliant.

The law itself

The ESIGN Act passed in 2000 in response to the boom in online commerce. UETA, drafted in 1999 and adopted by 49 states (all except New York, which has its own equivalent), provides the state-level framework. Together they created a stable, two-decade-old foundation for U.S. electronic signing. Federal agencies have layered specific rules on top — IRS Publication 1345 for tax forms, FDA Part 11 for regulated industries — but the baseline is settled.

What counts as a valid e-signature

• An electronic signature is 'an electronic sound, symbol, or process attached to or logically associated with a contract... and executed or adopted by a person with the intent to sign'
• Typed names, drawn signatures, clicked checkboxes, and biometric signatures all qualify
• The signer must consent to do business electronically (usually a one-line disclosure at signing)
• Both parties must intend to sign; coerced or unknowing 'signatures' are invalid
• The associated record must be retained and accurately reproducible

What's still excluded

Some categories require wet signatures or notarization. Common exclusions include:

• Wills, codicils, and testamentary trusts (most states still require wet signatures)
• Adoption, divorce, and certain family law documents
• Court orders and certain official court documents
• Cancellation of utility services in some states
• Notices of repossession, foreclosure, or eviction in some jurisdictions

What courts actually look at

If a signature is challenged, courts look for evidence that:

1. Both parties intended to sign and conduct business electronically
2. The signer can be identified (audit trail evidence)
3. The document has not been altered after signing
4. The signed record can be retained and accurately reproduced

This is exactly what a proper audit trail captures: timestamps, IP addresses, the recipient's identity, and the unaltered final document.

Practical guidance

If you're in normal U.S. commerce — service agreements, employment, freelance contracts, sales, leases, NDAs — you can confidently e-sign. The platform you use needs to capture the audit trail (signer identity, intent, timestamp, document integrity). If you ever face a challenge, that audit trail is what wins. Avoid platforms that sign without producing an audit trail report; that's the actual legal evidence.

Bottom line

The legal infrastructure for e-signatures has been settled for years. The question is no longer "is this legal" but "is my workflow capturing the evidence I'd need if it were ever challenged." Use a platform with a real audit trail — that single requirement covers 95% of the legal risk.

DottiSign captures full audit trails on every document, including signer IP, timestamps, and the unmodified signed PDF.