American Express supports mobile check deposit into its High Yield Savings Account, with a $5,000 daily limit, a $10,000 rolling 30-day cap, and a 5:00 PM ET cutoff time. Most standard checks clear by the next business day. Here is everything you need to know for 2026.
Mobile Deposit Limits at a Glance
| Limit type | 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 | $225 (all check types) |
These are standard limits for established accounts. New accounts (open less than 30 days) face stricter availability holds — see the Fund Availability section below.
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, the first $225 of every deposit is available immediately — no exceptions.
| Check type | Immediate | Full availability |
|---|---|---|
| Standard personal check | $225 | Next business day |
| Payroll / government check | $225 | Next business day |
| Cashier’s or certified check | $225 | Next business day |
| Large check (over $5,525) | $225 | 2nd business day |
| New account (first 30 days) | $225 | 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.
- $225 is available immediately — within minutes of submission
- The remaining $2,775 is available on Wednesday morning (next business day)
- The deposit counts against your $5,000 daily limit for Tuesday
- Your 30-day rolling limit drops from $10,000 to $7,000
If you had submitted the same check at 6:00 PM ET on Tuesday — after the 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
- Download the American Express app (iOS or Android) and log in
- Tap your High Yield Savings account
- Tap Deposit a Check
- Select the account (HYSA or CD if applicable)
- Enter the check amount
- Photograph the front — place the check flat on a dark, well-lit surface
- Sign the back: write “For AmEx Mobile Deposit Only” and add your signature below
- Photograph the back
- Review the details and tap Submit
- Keep the original check for 60 days 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 more than 6 months old
- Check already deposited elsewhere (duplicate check detection)
- Amount exceeds your daily or 30-day limit
The 5:00 PM ET Cutoff — What It Really Means
American Express processes mobile deposits in a single daily batch at 5:00 PM Eastern Time on business days.
| When you submit | Processing day | Full availability |
|---|---|---|
| Before 5:00 PM ET, Mon–Fri | Same business day | Next business day |
| After 5:00 PM ET, Mon–Thu | Next business day | Day after next |
| Friday after 5:00 PM ET | Following Monday | Tuesday |
| Saturday or Sunday | Following Monday | Tuesday |
| Federal holiday | Next business day | Day after next |
Practical tip: If you need funds quickly, submit your check before 3:00 PM ET as a buffer — app processing can occasionally delay submission by 30–60 minutes during peak periods.
AmEx vs Other Banks: Mobile Deposit Limit Comparison
The AmEx $5,000 daily limit is on the conservative side for an online savings account. Here’s how it compares to competitors:
| Bank | Daily limit | 30-day limit | Cutoff time |
|---|---|---|---|
| American Express | $5,000 | $10,000 | 5:00 PM ET |
| Synchrony Bank | $10,000 | $10,000 | 5:00 PM ET |
| Ally Bank | $50,000 | $250,000 | 4:00 PM ET |
| Marcus by Goldman Sachs | $10,000 | Varies | 5:00 PM ET |
For accounts with large one-time check deposits — a home sale escrow check, an inheritance, or a settlement — the AmEx limits mean you’d need 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 the $5,000 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 — same-day or next-day for large amounts; AmEx’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.
Related Guides
- American Express HYSA transfer limits 2026 — outbound limits and wire details
- American Express routing number 2026 — ABA number for transfers and direct deposit
- American Express savings review 2026 — full HYSA features, pros and cons
- AmEx savings vs Synchrony 2026 — how the two compare on limits and rates
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