High-Yield Savings Account Comparison

American Express vs. Capital One

Compare rates, requirements, and features side-by-side to find the best option for you.

Analysis by Aviel Fahl
Updated December 6, 2025
Advertising Disclosure: We may earn a commission from partner links.

American Express

High Yield Savings Account

3.40%
APY
Dec 6, 2025
FDIC InsuredNo MinimumsGreat iOS App
Show Fine Print & Trends

Capital One

360 Performance Savings

3.40%
APY
Dec 6, 2025
FDIC InsuredNo MinimumsGreat iOS AppGreat Android AppIn-Person Access
Show Fine Print & Trends

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.

See Top Rates

Comparison Analysis

Comparing American Express vs. Capital One

Updated: Dec 6, 2025

Why American Express?

No distinct advantages found vs Capital One.

Why Capital One?

  • Physical branch access (Over 200 branches in Louisiana, Maryland, New Jersey, New York, Texas, Virginia and Washington, D.C.)
  • Higher rated Android app (4.5 vs 3.6)

Shared Benefits

Both offer monthly maintenance-free account options Both banks have options with $0 opening deposit Available Nationwide Available to New & Existing Customers
Automated Data Audit

Executive Summary

Both American Express and Capital One offer competitive high-yield savings accounts with an APY of 3.40%. American Express's High Yield Savings Account is online-only and requires no minimum deposit or balance, while also having no maintenance fees. Capital One's 360 Performance Savings account shares similar features, including no minimum deposit and maintenance fees, but is not exclusively online. With rates being nearly identical, either option could be suitable depending on the preference for online banking.

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 Capital One.

Compare All High-Yield Savings Accounts
Pibank
Pibank Savings
FDIC InsuredNo Minimums
4.60% APY
+1.20% vs American Express
Better Rate
Neighbors Bank
Neighbors Savings Account
FDIC InsuredNo MinimumsGreat Android App
4.50% APY
+1.10% vs American Express
Better Rate
Axos Bank
Axos ONE
FDIC InsuredNo MinimumsGreat iOS AppGreat Android App
4.31% APY
+0.91% vs American Express
Better Rate
FeatureAmerican ExpressCapital One
APY
3.40%
Verified: 12/6/2025
↘︎ 0.10%90d Change
3.40%
Verified: 12/6/2025
↘︎ 0.10%90d Change
Product NameHigh Yield Savings Account360 Performance Savings
Minimum Deposit$0$0
Min. Balance for APY$0$0
Monthly Fee$0$0
Branch AccessNoneYes
Account Type
Online Only
Online & Branches
Direct Deposit Req.NoneNone
Checking BundleNoNo
Mobile Apps
iOS4.9
Android3.6
iOS4.9
Android4.5
BBB RatingFA+
Next Steps

Savings Comparison

Calculations based on current APY.
$
$

Both accounts earn exactly the same amount.

American Express

High Yield Savings Account

3.40% APY

Savings Breakdown

  • Interest Earned
    +$2,050.50(10.2%)
  • Total Contributions
    $13,000
  • Initial Deposit
    $5,000

Projected Balance

$20,050.50

Effective APY
3.40%

Capital One

360 Performance Savings

3.40% APY

Savings Breakdown

  • Interest Earned
    +$2,050.50(10.2%)
  • Total Contributions
    $13,000
  • Initial Deposit
    $5,000

Projected Balance

$20,050.50

Effective APY
3.40%

The Banksparency Savings Calculator provides estimated savings growth based on user input and our latest data.

📈 Compare Savings Rates Over Time

Historical Performance

Last 10 Months Analysis
MetricAmerican ExpressCapital One
High Yield Savings Account360 Performance Savings
Current APY
3.40%3.40%
Trend
Stable Stable
Velocity (bps/mo)
-3.3-3.6
Days Since Change
1066
10-Month High
3.80%3.80%
10-Month Low
3.40%3.40%
Adjustments / Mo
0.380.38
Volatility Score
0.0300.033
How to read these metrics(Click to expand)

Trends & Velocity

  • Trend: The general direction of the rate over the analyzed period. Useful for spotting if a bank is currently aggressive or pulling back.
  • Velocity (bps/mo): Speed of change. A high positive number means they raise rates quickly. 10 bps = 0.10%.
  • Adjustments/Mo: "Twitchiness." High frequency means the rate changes constantly; low frequency means it's stable.

Risk & Range

  • High/Low: The absolute ceiling and floor of the rate during the 318-day window.
  • Volatility Score: Lower is better for predictability. It indicates how wildly the rate swings relative to its average.
  • Days Since Change: If this number is high (e.g., >90), the rate is very sticky. If low, it changed recently.

More Comparisons

Compare American Express' APY of 3.40% with other banks
Bank PairCompetitor APYMin Deposit
American Express vs Ally Bank3.30%$0
American Express vs Axos Bank4.31%$0
American Express vs Bank of America0.01%$100
American Express vs Barclays4.00%$0
American Express vs Bask Bank3.90%$0
American Express vs BMO Alto3.25%$0
American Express vs BrioDirect4.00%$5,000
American Express vs Chase Bank0.01%$0
American Express vs Chime3.50%$0
American Express vs CIT Bank3.75%$100
American Express vs Citibank3.30%$0
American Express vs Citizens Access™3.35%$0.01
American Express vs Climate First Bank4.21%$50
American Express vs Discover Bank3.40%$0
American Express vs Elevault4.08%$0
American Express vs EverBank4.05%$0
American Express vs Fitness Bank4.75%$100
American Express vs FNBO Direct3.00%$1
American Express vs Forbright Bank4.00%$0
American Express vs FVCbank3.85%$500
American Express vs GO2bank4.50%$0
American Express vs Ivy Bank4.25%$2,500
American Express vs LendingClub4.20%$0
American Express vs Marcus by Goldman Sachs3.65%$0
American Express vs Neighbors Bank4.50%$0
American Express vs Newtek Bank4.35%$0.01
American Express vs Openbank4.20%$500
American Express vs Peak Bank4.20%$100
American Express vs Pibank4.60%$0
American Express vs PNC3.53%$0
American Express vs Presidential Bank4.00%$5,000
American Express vs Quontic Bank3.75%$100
American Express vs Salem Five Direct3.71%$10
American Express vs Santander Bank0.01%$25
American Express vs SoFi Bank4.30%$0
American Express vs Synchrony Bank3.65%$0
American Express vs TIMBR4.40%$1,000
American Express vs UFB Direct3.71%$5000
American Express vs Valley Direct4.10%$1,000
American Express vs Varo Bank5.00%$0
American Express vs Vio Bank4.16%$100
American Express vs Wealthfront4.15%$0
American Express vs Wells Fargo0.05%$25
American Express vs Zynlo Bank4.05%$10
Compare Capital One's APY of 3.40% with other banks
Bank PairCompetitor APYMin Deposit
Capital One vs Ally Bank3.30%$0
Capital One vs Axos Bank4.31%$0
Capital One vs Bank of America0.01%$100
Capital One vs Barclays4.00%$0
Capital One vs Bask Bank3.90%$0
Capital One vs BMO Alto3.25%$0
Capital One vs BrioDirect4.00%$5,000
Capital One vs Chase Bank0.01%$0
Capital One vs Chime3.50%$0
Capital One vs CIT Bank3.75%$100
Capital One vs Citibank3.30%$0
Capital One vs Citizens Access™3.35%$0.01
Capital One vs Climate First Bank4.21%$50
Capital One vs Discover Bank3.40%$0
Capital One vs Elevault4.08%$0
Capital One vs EverBank4.05%$0
Capital One vs Fitness Bank4.75%$100
Capital One vs FNBO Direct3.00%$1
Capital One vs Forbright Bank4.00%$0
Capital One vs FVCbank3.85%$500
Capital One vs GO2bank4.50%$0
Capital One vs Ivy Bank4.25%$2,500
Capital One vs LendingClub4.20%$0
Capital One vs Marcus by Goldman Sachs3.65%$0
Capital One vs Neighbors Bank4.50%$0
Capital One vs Newtek Bank4.35%$0.01
Capital One vs Openbank4.20%$500
Capital One vs Peak Bank4.20%$100
Capital One vs Pibank4.60%$0
Capital One vs PNC3.53%$0
Capital One vs Presidential Bank4.00%$5,000
Capital One vs Quontic Bank3.75%$100
Capital One vs Salem Five Direct3.71%$10
Capital One vs Santander Bank0.01%$25
Capital One vs SoFi Bank4.30%$0
Capital One vs Synchrony Bank3.65%$0
Capital One vs TIMBR4.40%$1,000
Capital One vs UFB Direct3.71%$5000
Capital One vs Valley Direct4.10%$1,000
Capital One vs Varo Bank5.00%$0
Capital One vs Vio Bank4.16%$100
Capital One vs Wealthfront4.15%$0
Capital One vs Wells Fargo0.05%$25
Capital One vs Zynlo Bank4.05%$10