American Express vs. Marcus By Goldman Sachs
High-Yield Savings Account Comparison
By Aviel Fahl|Last Updated: October 16, 2025
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Summary of American Express vs. Marcus by Goldman Sachs
Key Metrics at a Glance
| Feature | American Express | Marcus by Goldman Sachs |
|---|---|---|
| Top Savings APY | 3.50% High Yield Savings Account | 3.65% Marcus Online Savings Account |
| Minimum to Open | $0 | $0 |
| Minimum Balance for Top APY | $0 | $0 |
American Express
Strengths
- American Express offers a competitive APY of 3.50%.
- No maintenance fees or minimum balance requirements.
- High App Store rating of 4.9.
Potential Drawbacks
- American Express has an F BBB rating and is not accredited.
- Google Play rating is lower at 3.7.
- No physical branches available.
Marcus by Goldman Sachs
Strengths
- Marcus by Goldman Sachs provides a higher APY of 3.65%.
- BBB rating of A+ indicates strong trustworthiness.
- Google Play rating is higher at 4.1.
Potential Drawbacks
- Marcus by Goldman Sachs has no physical branches.
- App Store rating is slightly lower at 4.8.
- No maintenance fees or minimum balance requirements.
→ As of October 16, 2025 American Express offers an APY of 3.50% for its High Yield Savings Account, with a minimum balance of $0, compared to Marcus by Goldman Sachs's 3.65% APY for its Marcus Online Savings Account, with a minimum balance of $0.
→ Marcus by Goldman Sachs yields $15 more than American Express on a $10,000 balance after one year. American Express pays $350, while Marcus by Goldman Sachs pays $365 - an APY advantage for Marcus by Goldman Sachs.
Calculate Savings Growth for American Express vs Marcus by Goldman Sachs
American Express
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 OverviewMarcus by Goldman Sachs
Total savings breakdown:
- Interest earned: $2,209.7 (10.93%)
- Total contributions: $13,000 (64.33%)
- Initial deposit: $5,000 (24.74%)
Your total balance
$20,209.70
Total balance: $20,209.7
Earnings: $2,209.7
Bank OverviewWith a $5,000 initial deposit and $13,000 in total contributions over 5 years, American Express's total earnings would be $95.6 lower than Marcus by Goldman Sachs's total earnings.
The Banksparency Savings Calculator provides estimated savings growth based on user input and our latest data.
Compare American Express' vs Marcus by Goldman Sachs' Savings Accounts
| American Express | Marcus by Goldman Sachs | ||
|---|---|---|---|
| Product | High Yield Savings Account | vs | Marcus Online Savings Account |
| APY | 3.50% (as of 10/16/2025) | 3.65% (as of 10/16/2025) | |
| Bundled Account | No | No | |
| FDIC-insured | Yes | Yes | |
| Online Only | Yes | Yes | |
| Compound Frequency | Daily | Daily | |
| Minimum Deposit | $0 | $0 | |
| 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 | 3.7/5 | 4.1/5 | |
| BBB Rating | F | A+ |
Comparative Historical APY Insights (Last 9 Months)
| American Express | Marcus by Goldman Sachs | ||
|---|---|---|---|
| Product | High Yield Savings Account | vs | Marcus Online Savings Account |
| Latest APY | 3.50 % | 3.65 % | |
| Trend | Sideways | Sideways | |
| Slope (bps/mo) | -3.7 | -3.4 | |
| Rate Changes / Mo | 0.34 | 0.23 | |
| Days Since Last Change | 85 | 141 | |
| High (-9 m) | 3.80 % | 3.90 % | |
| Low (-9 m) | 3.50 % | 3.65 % | |
| Draw-down from High | -7.9 % | -6.4 % | |
| Volatility (CV) | 0.027 | 0.027 |
APY Insights Glossary
- Latest APY
- Most recent advertised annual-percentage yield.
- Trend
- Direction over the last 9 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 (-9 m)
- Highest APY in the last 262 days.
- Low (-9 m)
- Lowest APY in the last 262 days.
- Draw-down from High
- How far today sits below the 9-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.