American Express vs. BMO Alto
American Express and BMO Alto both offer 3.00% APY on their high-yield savings accounts. With identical rates, your choice comes down to other factors like mobile app quality, branch access, or customer service reputation.
The Bottom Line
The American Express and BMO Alto savings accounts are very similar. Choose American Express if you're an iPhone user (no iOS app for BMO Alto), you're an Android user (no Android app for BMO Alto), or you want Zelle for quick transfers. Choose BMO Alto if BBB rating matters to you.
| Metric | American ExpressHigh Yield Savings Account Sep 11, 2026 | BMO AltoSavings Account Sep 9, 2026 |
|---|---|---|
| APY | 3.00% | 3.00% |
Earns in a year | $5,000+$150 $10,000+$300 $25,000+$750 | $5,000+$150 $10,000+$300 $25,000+$750 |
Min. Deposit | $0 | $0 |
Snapshot view. Rates subject to change. | ||
| Features | FDIC InsuredNo MinimumsGreat iOS AppGreat Android AppZelle® SupportedDaily CompoundingRate Changes Often | FDIC InsuredNo MinimumsDaily Compounding |
Market Reality Check
Both of these institutions offer rates below the top 10 savings and money market accounts we track. Those institutions all pay at least 4.01% APY.
Comparison Analysis
Comparing American Express vs. BMO Alto
Executive Summary
Both American Express and BMO Alto offer high yield savings accounts with an APY of 3.00%. These accounts require no minimum deposit or balance and have no maintenance fees, making them accessible options for savers. Both accounts are online-only and available nationally. Notably, American Express provides a better mobile app experience, with an iOS app rated 4.9 and an Android app rated 4.8. Since both banks offer comparable rates, the decision may hinge on the user experience provided by American Express's mobile platform.
The analysis is based on current Banksparency database records
* This content is provided for informational purposes only; always verify details with the provider.
Why American Express?
- Higher rated iOS app (4.9 vs 0.0)
- Higher rated Android app (4.8 vs 0.0)
- Fast transfers via Zelle®
Why BMO Alto?
No distinct advantages found vs American Express.
Key Feature Differences
Better Mobile App Experience
American ExpressAmerican Express offers an iOS app rated 4.9 (vs. 0.0) and Android app rated 4.8 (vs. 0.0)
Shared Benefits
Non-sponsored link to official site
Non-sponsored link to official site
Top Market Contenders
American Express vs. BMO Alto Savings Calculator
Both accounts earn exactly the same amount.
American Express
High Yield Savings Account
Savings Breakdown
- Interest Earned+$300.00(2.9%)
- Total Contributions$0
- Initial Deposit$10,000
Projected Balance
$10,300.00
BMO Alto
Savings Account
Savings Breakdown
- Interest Earned+$300.00(2.9%)
- Total Contributions$0
- Initial Deposit$10,000
Projected Balance
$10,300.00
The Banksparency Savings Calculator provides estimated savings growth based on user input and our latest data.
Still at a large branch bank?
A typical branch-bank savings rate is 0.05% APY. On a $10,000 balance, the gap to these two banks is at least $295 a year in interest.
Both American Express and BMO Alto advertise far more than that typical branch-bank rate.
| Feature | American Express | BMO Alto |
|---|---|---|
| APY | 3.00% Observed: 9/11/2026 0.10%90-day change | 3.00% Observed: 9/9/2026 Stable over 90 days |
| Product Name | High Yield Savings Account | Savings Account |
| Minimum Deposit | $0 | $0 |
| Min. Balance for APY | $0 | $0 |
| Monthly Fee | $0 | $0 |
| Compound Frequency | Daily | Daily |
| In-Branch Access | No | No |
| Account Type | Online Only | Online Only |
| Physical Branches | 1 (UT) | Not reported |
| Direct Deposit Req. | None | None |
| Checking Bundle | No | No |
| Mobile Apps | iOS- Android- | |
| FDIC or NCUA Insured | YesVerify FDIC | YesVerify FDIC |
| Zelle® Support | Available Requires Amex Rewards Checking; not available for standalone HYSA. | Not Supported |
| BBB Rating | F | A+ |
| Next Steps | Visit SiteVerify at American Express Non-sponsored link to official site | Visit SiteVerify at BMO Alto Non-sponsored link to official site |
Compare Savings Rates Over Time
Historical Performance
| Metric | American Express |
|---|---|
| High Yield Savings Account | |
Current APY | 3.00% |
Trend | Stable |
Speed of change | -0.04 |
Days Since Change | 63 |
8-Month High | 3.20% |
8-Month Low | 3.00% |
Changes per month | 0.26 |
Steadiness | 0.027 |
How to read these metrics(Click to expand)
Trends and speed
- Trend: The general direction of the rate over the analyzed period. Useful for seeing whether a bank is raising its rate or letting it slip.
- Speed of change: How fast the rate moves. A high positive number means they raise rates quickly. A reading of 0.10 is a tenth of a percentage point each month.
- Changes per month: How often the rate moves. A high number means it changes constantly; a low number means it holds.
Risk & Range
- High/Low: The absolute ceiling and floor of the rate during the 230-day window.
- Steadiness: How far the rate swings around its average. A lower score means a steadier, more predictable rate.
- Days Since Change: A high number, for example above 90, means the rate rarely moves. A low number means it changed recently.
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High Rates (With Checking Bundle)
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More Comparisons
Compare American Express' APY of 3.00% with other banks
Compare BMO Alto's APY of 3.00% with other banks
| Bank Pair | Competitor APY | Min Deposit |
|---|---|---|
| BMO Alto vs Ally Bank | 3.00% | $0 |
| BMO Alto vs Axos Bank | 4.21% | $0 |
| BMO Alto vs Barclays | 3.65% | $0 |
| BMO Alto vs Capital One | 3.50% | $0 |
| BMO Alto vs Chime | 3.75% | $0 |
| BMO Alto vs CIT Bank | 3.75% | $100 |
| BMO Alto vs EverBank | 3.90% | $0 |
| BMO Alto vs Marcus by Goldman Sachs | 3.40% | $0 |
| BMO Alto vs Newtek Bank | 4.20% | $100 |
| BMO Alto vs Openbank | 3.80% | $500 |
| BMO Alto vs Pibank | 4.10% | $0 |
| BMO Alto vs SoFi Bank | 4.00% | $0 |
| BMO Alto vs Synchrony Bank | 3.30% | $0 |
| BMO Alto vs Varo Bank | 3.75% | $0 |
| BMO Alto vs Wealthfront | 3.95% | $0 |