American Express vs. Capital One
American Express and Capital One 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 Capital One savings accounts are very similar. Choose Capital One if BBB rating matters to you, or you value in-person banking.
| Metric | American ExpressHigh Yield Savings Account Sep 4, 2026 | Capital OneBusiness Savings Account Sep 4, 2026 |
|---|---|---|
| APY | 3.00% | 3.50% |
Earns in a year | $5,000+$150 $10,000+$300 $25,000+$750 | $5,000+$175 $10,000+$350 $25,000+$875 |
Min. Deposit | $0 | $0 |
Snapshot view. Rates subject to change. | ||
| Features | FDIC InsuredNo MinimumsGreat iOS AppGreat Android AppZelle® SupportedDaily CompoundingRate Changes Often | FDIC InsuredNo MinimumsGreat iOS AppGreat Android AppIn-Person AccessZelle® Supported |
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. Capital One
Executive Summary
American Express offers a High Yield Savings Account with a competitive APY of 3.00%, available online only and with no minimum deposit or maintenance fees. In contrast, Capital One provides a 360 Performance Savings account, also with a 3.00% APY, but it does not require an online-only setup and is available in multiple states. However, Capital One's Business Savings Account stands out as the winner, offering a higher APY of 3.50% with no direct deposit requirement, making it a better choice for those seeking higher returns on their savings. Additionally, Capital One features a Kids Savings Account with a lower APY of 2.50% for youth savings.
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?
No distinct advantages found vs Capital One.
Why Capital One?
- Higher potential APY (2.50%-3.50% vs 3.00%) on all balances
- Physical branch access (Over 200 branches in Louisiana, Maryland, New Jersey, New York, Texas, Virginia and Washington, D.C.)
- Offers 3 different high-yield savings options
Key Feature Differences
Better Returns at $10,000
Capital OneCapital One's Business Savings Account earns more on smaller deposits (approx. $350 vs $300/yr).
Better Returns at $25,000
Capital OneCapital One's Business Savings Account pulls ahead with larger amounts (approx. $875 vs $750/yr).
Better for Simplicity
Capital OneCapital One's Business Savings Account offers 3.50% APY with no bundling, direct deposit requirement or caps.
Shared Benefits
Over a 1-year period, Capital One's Business Savings Account pays $50 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.
Non-sponsored link to official site
Non-sponsored link to official site
Top Market Contenders
American Express vs. Capital One Savings Calculator
You earn $50 more with Capital One than American Express on a $10,000 initial deposit for 1 year*.
*This calculation assumes that APYs remain unchanged for 1 year, and takes into account known promo rate periods, but does not factor in bonuses. You can see how often these banks have changed their rates in the Compare Savings Rates Over Time section below.
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
Capital One
Business Savings Account
Savings Breakdown
- Interest Earned+$350.00(3.4%)
- Total Contributions$0
- Initial Deposit$10,000
Projected Balance
$10,350.00
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 Capital One advertise far more than that typical branch-bank rate.
| Feature | American Express | Capital One |
|---|---|---|
| APY | 3.00% Observed: 9/4/2026 0.10%90-day change | 3.50% Observed: 9/4/2026 Stable over 90 days |
| Product Name | High Yield Savings Account | Business Savings Account |
| Minimum Deposit | $0 | $0 |
| Min. Balance for APY | $0 | $0 |
| Monthly Fee | $0 | N/A |
| Compound Frequency | Daily | Monthly |
| In-Branch Access | No | Yes |
| Account Type | Online Only | Online & Branches |
| Physical Branches | 1 (UT) | 252 (CT, DC, DE, LA, MD, NJ, NY, TX (+1 more)) |
| Direct Deposit Req. | None | None |
| Checking Bundle | No | No |
| Mobile Apps | ||
| FDIC or NCUA Insured | YesVerify FDIC | YesVerify FDIC |
| Zelle® Support | Available Requires Amex Rewards Checking; not available for standalone HYSA. | Available Limit: $2,500/dayAvailable for 360 Checking accounts. |
| BBB Rating | F | A+ |
| Next Steps | Visit SiteVerify at American Express Non-sponsored link to official site | Visit SiteVerify at Capital One Non-sponsored link to official site |
Compare Savings Rates Over Time
Historical Performance
| Metric | American Express | Capital One | |
|---|---|---|---|
| High Yield Savings Account | 360 Performance Savings | Business Savings Account | |
Current APY | 3.00% | 3.00% | 3.50% |
Trend | Stable | Stable | Stable |
Speed of change | -0.04 | -0.03 | 0.00 |
Days Since Change | 56 | 94 | 164 |
7-Month High | 3.20% | 3.20% | 3.50% |
7-Month Low | 3.00% | 3.00% | 3.50% |
Changes per month | 0.28 | 0.28 | 0.00 |
Steadiness | 0.027 | 0.026 | 0.000 |
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 216-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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