American Express vs. Betterment
Compare rates, requirements, and features side-by-side to find the best option for you.
American Express
High Yield Savings Account
3.40%APYDec 10, 2025FDIC InsuredNo MinimumsGreat iOS AppShow Fine Print & Trends Hide Details
American Express
High Yield Savings Account
Betterment
Cash Reserve
3.50%APYDec 10, 2025FDIC InsuredLow MinimumsGreat iOS AppGreat Android AppShow Fine Print & Trends Hide Details
Betterment
Cash Reserve
Market Reality Check
Both of these banks offer rates below the current top tier. The best rates we track are currently above 4.25% APY.
American Express vs. Betterment Savings Calculator
Betterment earns $63.6 more than American Express.
American Express
High Yield Savings Account
Savings Breakdown
- Interest Earned+$2,050.50(10.2%)
- Total Contributions$13,000
- Initial Deposit$5,000
Projected Balance
$20,050.50
Betterment
Cash Reserve
Savings Breakdown
- Interest Earned+$2,114.10(10.5%)
- Total Contributions$13,000
- Initial Deposit$5,000
Projected Balance
$20,114.10
The Banksparency Savings Calculator provides estimated savings growth based on user input and our latest data.
Comparison Analysis
Comparing American Express vs. Betterment
Why American Express?
No distinct advantages found vs Betterment.
Why Betterment?
- ✓Higher rated Android app (4.7 vs 3.6)
— Key Feature Differences —
Better Returns at $10,000
BettermentBetterment's Cash Reserve earns more on smaller deposits (approx. $350 vs $340/yr).
Shared Benefits
Over a 1-year period, Betterment's Cash Reserve pays $10 more interest on a $10,000 balance than American Express's High Yield Savings Account.
*This calculation assumes current rates remain consistent for 1 year and does not include temporary bonuses.
Executive Summary
Betterment offers a Cash Reserve account with a higher APY of 3.50%, making it the winner in this comparison. This online-only product requires a minimum deposit of $10 and has no maintenance fees. In contrast, American Express provides a High Yield Savings Account with an APY of 3.40%, which is also online-only and has no minimum deposit or maintenance fees. Both accounts do not require direct deposit, but Betterment's account yields slightly more, particularly for smaller deposits.
Analysis generated based on current Banksparency database records
* AI-generated content provided for informational purposes only. Accuracy is not guaranteed; always verify details with the provider.
Stop Losing Interest
See who beats both American Express and Betterment.
| Feature | American Express | Betterment |
|---|---|---|
| APY | 3.40% Verified: 12/10/2025 ↘︎ 0.10%90d Change | 3.50% Verified: 12/10/2025 ↘︎ 0.50%90d Change |
| Product Name | High Yield Savings Account | Cash Reserve |
| Minimum Deposit | $0 | $10 |
| Min. Balance for APY | $0 | $0 |
| Monthly Fee | $0 | $0 |
| Branch Access | None | None |
| Account Type | Online Only | Online Only |
| Direct Deposit Req. | None | None |
| Checking Bundle | No | No |
| Mobile Apps | iOS4.9 Android3.6 | iOS4.8 Android4.7 |
| BBB Rating | F | A- |
| Next Steps |
📈 Compare Savings Rates Over Time
Historical Performance
| Metric | American Express | Betterment |
|---|---|---|
| High Yield Savings Account | Cash Reserve | |
Current APY | 3.40% | 3.50% |
Trend | Stable | Stable |
Velocity (bps/mo) | -3.3 | -4.5 |
Days Since Change | 14 | 39 |
11-Month High | 3.80% | 4.00% |
11-Month Low | 3.40% | 3.50% |
Adjustments / Mo | 0.37 | 0.19 |
Volatility Score | 0.031 | 0.049 |
How to read these metrics(Click to expand)
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