American Express vs. Quontic Bank
High-Yield Savings Account Comparison
By Aviel Fahl|Last Updated: November 12, 2025
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Summary of American Express vs. Quontic Bank
Key Metrics at a Glance
| Feature | American Express | Quontic Bank |
|---|---|---|
| Top Savings APY | 3.50% High Yield Savings Account | 3.75% High Yield Savings |
| Minimum to Open | $0 | $100 |
| Minimum Balance for Top APY | $0 | $0 |
American Express
Strengths
- No minimum deposit required for the High Yield Savings Account.
Potential Drawbacks
- American Express has a BBB rating of F, indicating lower trustworthiness.
- App Store rating is 4.9, but Google Play rating is only 3.6.
Quontic Bank
Strengths
- Quontic Bank offers a higher APY of 3.75% for its High Yield Savings account.
- Quontic Bank has a strong BBB rating of A+.
Potential Drawbacks
- Requires a minimum deposit of $100 to open the High Yield Savings account.
→ As of November 12, 2025 American Express offers an APY of 3.50% for its High Yield Savings Account, with a minimum balance of $0, compared to Quontic Bank's 3.75% APY for its High Yield Savings account, with a minimum balance of $0.
→ Quontic Bank yields $25 more than American Express on a $10,000 balance after one year. American Express pays $350, while Quontic Bank pays $375 - an APY advantage for Quontic Bank.
Calculate Savings Growth for American Express vs Quontic Bank
American Express - High Yield Savings Account
Total savings breakdown:
- Interest earned: $2,114.1 (10.51%)
- Total contributions: $13,000 (64.63%)
- Initial deposit: $5,000 (24.86%)
Your total balance
$20,114.10
Total balance: $20,114.1
Earnings: $2,114.1
Bank OverviewQuontic Bank - High Yield Savings
Total savings breakdown:
- Interest earned: $2,273.8 (11.22%)
- Total contributions: $13,000 (64.12%)
- Initial deposit: $5,000 (24.66%)
Your total balance
$20,273.80
Total balance: $20,273.8
Earnings: $2,273.8
Bank OverviewWith a $5,000 initial deposit and $13,000 in total contributions over 5 years, American Express's total earnings would be $159.7 lower than Quontic Bank's total earnings.
The Banksparency Savings Calculator provides estimated savings growth based on user input and our latest data.
Compare American Express' vs Quontic Bank's Savings Accounts
| American Express | Quontic Bank | ||
|---|---|---|---|
| Product | High Yield Savings Account | vs | High Yield Savings |
| APY | 3.50% (as of 11/12/2025) | 3.75% (as of 11/12/2025) | |
| Bundled Account | No | No | |
| FDIC-insured | Yes | Yes | |
| Online Only | Yes | Yes | |
| Compound Frequency | Daily | Daily | |
| Minimum Deposit | $0 | $100 | |
| Minimum Balance for APY | $0 | $0 | |
| Maintenance Fee | $0 | $0 | |
| Direct Deposit Required | No | No | |
| App Store Rating | 4.9/5 | 4.8/5 | |
| Google Play Rating | 3.6/5 | 4.8/5 | |
| BBB Rating | F | A+ |
Comparative Historical APY Insights (Last 10 Months)
| American Express | Quontic Bank | ||
|---|---|---|---|
| Product | High Yield Savings Account | vs | High Yield Savings |
| Latest APY | 3.50 % | 3.75 % | |
| Trend | Sideways | Sideways | |
| Slope (bps/mo) | -3.3 | -1.5 | |
| Rate Changes / Mo | 0.31 | 0.10 | |
| Days Since Last Change | 113 | 139 | |
| High (-10 m) | 3.80 % | 3.85 % | |
| Low (-10 m) | 3.50 % | 3.75 % | |
| Draw-down from High | -7.9 % | -2.6 % | |
| Volatility (CV) | 0.028 | 0.013 |
APY Insights Glossary
- Latest APY
- Most recent advertised annual-percentage yield.
- Trend
- Direction over the last 10 months (regression slope).
- Slope (bps/mo)
- Average monthly change; 10 bps = 0.10 pp.
- Rate Changes / Mo
- Typical number of APY moves per month.
- Days Since Last Change
- Recency of the latest APY adjustment.
- High (-10 m)
- Highest APY in the last 295 days.
- Low (-10 m)
- Lowest APY in the last 295 days.
- Draw-down from High
- How far today sits below the 10-month peak.
- Volatility (CV)
- Coefficient of variation = stdev ÷ mean.
Why Track Savings-Account APYs?
- See how quickly a bank reacts to Fed moves or competition.
- Gauge “twitchiness” - frequent moves can annoy savers.
- Spot if you're buying near a peak (draw-down) or riding a rise.
- Slope (bps/mo) shows speed of change.
- Volatility (CV) scales jumps by average level.