American Express supports mobile check deposit into its High Yield Savings Account, reported at a $5,000 daily limit, a $10,000 rolling 30-day cap, and a 5:00 PM ET cutoff time — confirm your current limit and cutoff directly in the app, since these can vary by account and change over time. Federal Regulation CC requires a minimum portion of every deposit to be made available the first business day; that federal minimum was raised from $225 to $275, effective July 1, 2025.

Mobile Deposit Limits at a Glance

Limit type Reported Amount
Daily deposit limit $5,000
30-day rolling limit $10,000
Single check limit $5,000
Cutoff time 5:00 PM ET
Immediate availability (Reg CC minimum) $275 (all check types), effective July 1, 2025

These are standard limits reported for established accounts; confirm your current limit directly, since new accounts (open less than 30 days) typically face stricter availability holds.


Fund Availability: When Will Your Money Be Ready?

How fast your deposit clears depends on the check type and how long your account has been open. Under federal Regulation CC, a minimum portion of every deposit — $275 as of July 1, 2025 — must be made available on the first business day.

Check type Immediate (Reg CC minimum) Full availability
Standard personal check $275 Next business day
Payroll / government check $275 Next business day
Cashier’s or certified check $275 Next business day
Large check (over $6,725, the Reg CC large-deposit exception threshold) $275 2nd business day
New account (first 30 days) $275 5–7 business days

Worked Example: Depositing a $3,000 Payroll Check

You submit a $3,000 payroll check via the AmEx app at 3:30 PM ET on a Tuesday.

  • $275 is available immediately — within minutes of submission (per the current Regulation CC minimum)
  • The remaining $2,725 is available on Wednesday morning (next business day), assuming standard processing
  • The deposit counts against your daily and 30-day limits

If you had submitted the same check at 6:00 PM ET on Tuesday — after the reported 5:00 PM cutoff — Wednesday becomes your processing day and Thursday becomes your full-availability day.


How to Deposit a Check via the American Express App

  1. Download the American Express app (iOS or Android) and log in
  2. Tap your High Yield Savings account
  3. Tap Deposit a Check
  4. Select the account (HYSA or CD if applicable)
  5. Enter the check amount
  6. Photograph the front — place the check flat on a dark, well-lit surface
  7. Sign the back: write “For AmEx Mobile Deposit Only” and add your signature below
  8. Photograph the back
  9. Review the details and tap Submit
  10. Keep the original check for a reasonable period (commonly recommended: several weeks) before shredding

Common reasons a deposit is rejected:

  • Blurry or poorly lit photo (reshoot in natural light)
  • Missing or incorrect restrictive endorsement on the back
  • Check is post-dated or stale-dated
  • Check already deposited elsewhere (duplicate check detection)
  • Amount exceeds your daily or 30-day limit

Regulation CC: A Federal Rule That Applies Regardless of Bank

The $275 next-day availability minimum and the $6,725 large-deposit exception threshold are federal rules under Regulation CC, effective July 1, 2025, per the Federal Reserve’s Regulation CC compliance guide. They apply to every US bank, not just American Express.


AmEx vs Other Banks: Mobile Deposit Limit Comparison

Mobile deposit limits vary by bank and account tier, and change over time. Confirm each bank’s current limit directly rather than relying on a fixed comparison table — American Express’s reported $5,000 daily limit is on the more conservative side among online banks, based on figures gathered for this review.

For accounts with large one-time check deposits — a home sale escrow check, an inheritance, or a settlement — American Express’s limits may mean multiple deposits over multiple days. In those cases, a wire transfer is a more practical option. See the AmEx HYSA transfer limits and wire instructions for routing number and wire details.


Other Ways to Fund Your AmEx Savings Account

Mobile check deposit is just one funding method. If a check exceeds your daily limit, or you want faster access to large amounts, here are your alternatives:

  • ACH transfer from a linked external checking account — 1–3 business days, most common method
  • Wire transfer — for incoming funds; American Express’s routing number is 124085066
  • Direct deposit — route a paycheck directly to your HYSA using routing 124085066
  • Mail a physical check — contact American Express banking support for the mailing address

If you want to understand how the full American Express High Yield Savings account works — including APY, fees, and CD options — our hub page covers the complete picture.


WealthVieu
Written by WealthVieu

WealthVieu researches and writes data-driven personal finance guides using primary sources including the IRS, Bureau of Labor Statistics, Federal Reserve, and Census Bureau.

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