To endorse a check for mobile deposit, flip it over, sign your name in the endorsement area at the top, and write a restrictive phrase such as “For Mobile Deposit Only” directly beneath your signature. That extra line is what tells your bank the check is meant for digital submission and nothing else, and it is the single most important thing you can add to protect yourself from a check being processed twice.
Where to Sign and What to Write
Turn the check over and find the endorsement area at the top of the back. Industry standards referenced in federal regulations reserve a specific space there for the payee’s endorsement, typically about an inch and a half from the trailing edge of the check.1eCFR. 12 CFR 229.35 – Indorsements Keep your writing inside that band. Marks outside it can interfere with how the bank processes the image.
Sign your name exactly as it appears on the “Pay to the Order of” line on the front. If your name is misspelled on the front, sign it the misspelled way first, then sign again with the correct spelling underneath. Both signatures belong on the check.
Directly below your signature, write the restrictive endorsement. The most widely accepted wording is:
- For Mobile Deposit Only
- For Mobile Deposit at [Your Bank Name] Only
Either phrasing works at most banks. Some checks come with a pre-printed checkbox labeled “For Mobile Deposit.” If yours does, mark the box clearly with a pen in addition to writing the phrase. A checked box alone is not always treated as a complete restrictive endorsement, so write the words out even when the box is there.
Use a pen with dark ink. Pencil, light-colored ink, or anything that smudges can fail the bank’s image recognition. Keep the signature and the phrase on separate lines so neither one runs into the other.
Why the Restrictive Phrase Matters
The restrictive endorsement is not a formality your bank invented. Federal banking regulations recognize this language directly. The commentary to 12 CFR § 229.34, which governs warranties and indemnities for electronic checks, specifically references the phrase “for mobile deposit at [Bank Name] only” as a restrictive endorsement that a second bank should not accept for deposit.2eCFR. 12 CFR Part 229 – Availability of Funds and Collection of Checks (Regulation CC) – Section: Commentary to 229.34 Warranties and Indemnities
The Uniform Commercial Code backs this up. Under UCC § 3-206, an endorsement using words like “for deposit” or “for collection” means anyone other than a bank who takes the check without following the endorsement’s instructions is liable for converting the instrument.3Cornell Law Institute. UCC 3-206 – Restrictive Indorsement In practical terms, that phrase makes it much harder for someone to cash the check at a teller window or deposit it into a different account after you have already submitted it digitally.
This matters because of double presentment: depositing the same check twice, whether through your phone and then at an ATM, or twice through the app. Automated systems usually catch the duplicate and reverse the second deposit, but if both clear, you are responsible for returning the extra funds. Unresolved double deposits can produce a negative balance, overdraft fees, account restrictions, and damage to your banking relationship. The restrictive endorsement is the single best safeguard.
Endorsing Checks With More Than One Payee
If a check is made out to more than one person, the small word connecting the names decides who has to sign.
- “John and Jane Smith” — both people must endorse the back.
- “John or Jane Smith” — either person can endorse alone.
Many banks will reject a mobile deposit of an “and” check that carries only one signature. Read the pay line carefully before you start writing. If the check names you and another person jointly, you will need to get that person’s signature on the back as well, in the same endorsement area, along with the restrictive phrase.
Checks You Cannot Fix With an Endorsement
No endorsement, however carefully written, will push a check through mobile deposit if the check itself is ineligible. Most banks exclude the following from mobile submission:
- Third-party checks, meaning a check originally written to someone else who signs it over to you. Banks are not legally required to accept third-party checks at all, and most prohibit them from digital deposit. The cleaner approach is for the original payee to deposit the check into their own account and then transfer the money to you.
- International checks drawn on banks outside the United States.
- U.S. savings bonds, which must be redeemed through a bank branch or TreasuryDirect.
- U.S. postal money orders, which typically require in-person deposit.
- Convenience checks drawn against a line of credit.
- Remotely created checks generated electronically rather than from a physical checkbook.
- Traveler’s checks from most issuers.
If your check falls into one of these categories, the endorsement question is moot. You will need a branch or an ATM.
What to Do With the Check After You Deposit It
Your endorsement does its most important work after you submit. Once the deposit is confirmed, write “Mobile Deposit” and the date across the front of the check. That mark, combined with the restrictive endorsement on the back, protects you two ways: it reminds you the check has already been processed, and it signals the same to anyone else who sees it.
Keep the original in a secure place for at least five days. Some banks recommend longer. The physical check may be needed if the bank runs into an image-quality or processing issue and has to go back to the paper. Once the funds have fully posted to your account and the deposit has cleared, destroy the check. A cross-cut shredder is the safest method, because the check carries the payer’s account number, the bank’s routing number, and your signature.
A properly endorsed check — signed, restricted to mobile deposit, and marked after submission — moves through the system cleanly and leaves no opening for a second deposit by anyone else.