Write your signature on the back, then add "For Mobile Deposit Only"

When you deposit a check through your bank's mobile app instead of at a branch or ATM, you need to endorse it differently than you would for a teller. A standard endorsement — just your signature — tells the bank the check can be deposited any way. A mobile deposit endorsement restricts it to that method only, which protects you if the check is lost or stolen after you've signed it.

The process takes 30 seconds. Turn the check over to the blank side. Sign your name on the back, just as you normally would. Below your signature, write "For Mobile Deposit Only." That's it. Your bank's app will photograph both the front and back, and the image is what gets processed.

Some banks print a box or line on the back of their checks showing exactly where to sign and what to write. If yours does, use that space. If not, sign in the top third of the back and write the restriction below it, leaving room for the bank's processing marks.

Key Takeaways

  • Write your signature on the back of the check, then add "For Mobile Deposit Only" below it to restrict how the check can be used.
  • This restriction protects you because it prevents someone else from depositing the check in person or at an ATM if the check goes missing.
  • The mobile app will photograph both sides of the check, so make sure your endorsement is legible and the entire check is visible in the frame.
  • Some banks require this exact wording; others accept variations like "Mobile Deposit Only" — check your bank's app or website if you're unsure.
  • Do not sign the check until you're ready to photograph it, because once it's endorsed, anyone who has it can attempt to deposit it.

Why the wording matters

The phrase "For Mobile Deposit Only" is a restrictive endorsement. It tells any bank that processes the check that it can only be deposited through a mobile app, not through any other method. If someone tries to deposit it at a teller window or ATM, the bank should reject it.

This matters because mobile deposits are tracked differently than in-person deposits. The bank has a record of which app user submitted the image, and the image itself is timestamped. If the check is lost or stolen after you've endorsed it this way, the thief cannot walk into a branch and cash it. They would have to use your phone or somehow access your bank account, which is much harder than simply presenting a signed check to a teller.

Without this restriction, a standard signature alone means the check is negotiable — anyone holding it can deposit it anywhere. That's why banks and the Federal Reserve recommend the restrictive wording for mobile deposits.

What happens if you forget the wording

If you sign the check but forget to write "For Mobile Deposit Only," most banks will still accept it through their app. The mobile deposit system is designed to catch unsigned or improperly endorsed checks and ask you to resubmit. You'll see an error message in the app telling you what's wrong.

At that point, you have two choices: take a new photo with the correct endorsement, or sign and endorse a fresh check. Either way, you'll need to correct it before the bank processes it. The check won't be deposited until the endorsement is right.

If you've already submitted it and the bank accepted it anyway, the check is still valid — it's just not as protected. Call your bank's customer service line to ask whether they can add a note to the deposit record restricting it to mobile only, though most won't be able to after the fact.

Timing: when to endorse

Endorse the check as close to the moment you photograph it as possible. Don't sign it hours or days in advance. Once your signature and the restrictive wording are on the back, the check is ready to be deposited by anyone who has it. If you lose it or it's stolen before you take the photo, someone else could try to use it.

Some people endorse multiple checks at once if they're depositing several. That's fine if you're doing it right before you photograph them all. But if you're endorsing checks you plan to deposit later in the week, keep them in a secure place — a wallet, a drawer at home, not on a desk or in a car.

What your bank's app will show you

When you open your bank's mobile deposit feature, the app will usually show you a guide or checklist. It will tell you to sign the back of the check and may specify the exact wording it wants. Some banks say "For Mobile Deposit Only." Others accept "Mobile Deposit Only" or "For Deposit Only via Mobile App." Read your bank's instructions in the app before you endorse.

After you take the photos, the app will display both images — front and back — so you can review them before submitting. Check that your signature and the wording are clearly visible and that the entire check fits in the frame. If the image is blurry or cut off, the bank may reject it and ask you to resubmit.

Once you submit, the app will give you a confirmation number and tell you when the deposit will be processed. Most mobile deposits clear within one to two business days, though some banks are faster. You can check your account balance in the app to see when the funds arrive.

If your check has multiple payees

If the check is made out to two people — "John Smith and Jane Doe" — both people need to sign the back. Each person should write their signature and the restrictive wording. If only one person signs, the bank may reject it or ask for the other person's signature before processing.

If the check says "John Smith or Jane Doe," only one signature is needed. Whoever is depositing it should sign and add the mobile deposit wording.

If you're not sure whether both signatures are required, call your bank before you photograph the check. It's easier to get it right the first time than to resubmit.

Frequently Asked Questions

Can I deposit a check without writing "For Mobile Deposit Only"?

Yes, most banks will accept a check with just your signature through their mobile app. However, the restrictive wording protects you if the check is lost or stolen, because it prevents someone else from depositing it in person. It's a best practice, and many banks recommend or require it.

What if I already deposited a check and realized I forgot the wording?

If the bank already processed it, there's nothing to worry about — the deposit is complete. If you submitted it and the bank rejected it for missing the wording, the app will prompt you to resubmit with the correct endorsement. The check itself is still valid and hasn't been cashed.

Do I need to write anything else on the back of the check?

No. Just your signature and "For Mobile Deposit Only." Don't write your account number, phone number, or driver's license number on the check. The mobile app captures all the information the bank needs from the images.

What if my bank's app asks for different wording?

Follow what your bank's app or website says. Banks may have slightly different requirements — some want "Mobile Deposit Only," others want "For Mobile Deposit Only," and a few accept variations. The app will usually show you an example or tell you exactly what to write.

Can someone else deposit a check I've endorsed for mobile deposit?

Not through a teller or ATM — the restrictive wording prevents that. They would need access to your phone and your bank's app to submit it through mobile deposit. That's why the wording matters: it closes off the easiest way for someone to misuse a check they find or steal.