A practical guide

Short answer

Usually no. In the US, the ESIGN Act says a signature can't lose its legal effect just because it's electronic. That covers most forms: leases, job papers, school forms, tax forms like a W-9. The law leaves out a short list, like wills, court papers and some family-law documents. If the sender or the form asks for ink, do what they ask. When in doubt, ask them.

OPEN · SIGN · SEND

From PDF to signed in a few steps.

See how it works on your iPhone.

01

Open your PDF

Choose it from Mail or Files.

eSign PDF home screen on iPhone with a PDF ready to sign
02

Sign it

Add your signature and fill in the details.

Create a signature on iPhone by drawing, typing, or importing it
03

Send it back

Share a finished PDF they can open.

Signed PDF on iPhone with a Share signed PDF button

Usually fine on your phone vs. usually not

General information about US federal law, not legal advice. States and the sender can add their own rules.

Usually fine to sign electronicallyLeft out of the ESIGN Act
Leases and rental applicationsWills, codicils and testamentary trusts
Job offers, NDAs, contractor agreementsAdoption, divorce and other family-law papers (state law)
School permission slips and formsCourt orders and official court filings
W-9s and similar business formsUtility shut-off notices
Estimates, change orders, sign-offsForeclosure or eviction notices for your home
Bank and insurance forms, when they accept PDFsHealth or life insurance cancellation notices

The left-out list is from 15 U.S.C. § 7003 (linked below). Those papers often still need ink or the court's own system.

Signed PDF on iPhone ready to send back
ESIGN PDF · ON IPHONE

Signed on the phone and ready to send: no printer, no scanner.

Open your PDF. Add your signature. Send it back.

Not sure? Ask in one line

Most offices answer yes the same day. Then you have it in writing. Send this: "Is it OK if I sign this electronically and send the PDF back, or do you need ink on paper?"

When they say yes: skip all three steps

1

Open the form on your iPhone

Open the PDF from the email or Files in a signing app.

2

Sign and fill

Add your signature, the date, and anything else the form asks for.

3

Send it back

Export and reply to their email. No printer, no scanner, no photo of a crooked page.

When they say ink

Print it once (a library or print shop works), sign in pen, then scan it with your phone's camera instead of a scanner. Our page for when you have no printer covers that. If they need a notary, ask whether they accept an online notary in your state.

Signed on your phone but they say they see a blank line? That's a viewer problem with its own fix: can't sign a PDF on iPhone. For the full signing steps, see sign a PDF without printing.

They said electronic is fine

Sign it on your phone

Open the PDF, sign, and send back a clean, flattened file.

Skip the printer

First export free, then $59.99 once (US). No account.

FAQ

Why do they tell me to print, sign, and scan?+

Often it's an old habit or an old form. Many offices accept an electronic signature if you ask.

Is an electronic signature legal in the US?+

For most documents, yes. The ESIGN Act says a signature can't lose its legal effect just because it's electronic. It leaves out a short list, such as wills and court papers.

Can I just take a photo of the signed page?+

Sign the PDF on your phone instead. If it has to be ink, scan it with your camera rather than taking a photo. Scans are straight and readable.

Send it back signed.

Sign, fill and flatten PDFs on iPhone. No account. $59.99 one-time (US).

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