Capital One vs Discover Bank
High-Yield Savings Accounts Comparison

Last Updated: August 29, 2025

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Summary of Capital One vs. Discover Bank

As of 8/29/2025 both Capital One (360 Performance Savings) and Discover Bank (Online Savings Account) offer an APY of 3.50% .

Both banks yield $350 in interest on a $10,000 balance after one year. Neither has an APY advantage, so consider other features (fees, access, app ratings, etc.) when choosing.

Capital One

Strengths

  • Capital One has over 200 branches across several states.
  • Capital One's App Store rating is 4.9, matching Discover Bank.
  • Both banks offer a current APY of 3.50%.

Potential Drawbacks

  • Capital One's Google Play rating is lower at 4.5 compared to Discover Bank's 4.3.
  • Capital One has a direct deposit requirement for some accounts, which may limit access.

Discover Bank

Strengths

  • Discover Bank has no branches, allowing for potentially lower overhead costs.
  • Discover Bank's Google Play rating is 4.3, slightly lower than Capital One's.
  • Both banks offer a current APY of 3.50%.

Potential Drawbacks

  • Discover Bank has no physical branches, which may not suit all customers.
  • Discover Bank's App Store rating is 4.9, matching Capital One.
Summary: Both Capital One and Discover Bank offer high-yield savings accounts with a competitive APY of 3.50%. Capital One provides the advantage of physical branches, while Discover Bank operates online-only. Both banks have similar App Store ratings, but Capital One's Google Play rating is higher. Notably, Capital One's direct deposit requirement may limit account access compared to Discover Bank's more flexible approach.

Compare Capital One's vs Discover Bank's Savings Accounts

Capital OneDiscover Bank
Product360 Performance SavingsvsOnline Savings Account
APY
3.50% (as of 8/29/2025)3.50% (as of 8/29/2025)
Bundled Account
NoNo
FDIC-insured
YesYes
Online OnlyNoYes
Compound Frequency
MonthlyDaily
Minimum Deposit$0$0
Minimum Balance for APY$0$0
Maintenance Fee$0$0
Direct Deposit Required
NoNo
App Store Rating4.9/54.9/5
Google Play Rating4.5/54.3/5
BBB RatingA+A+

Comparative Historical APY Insights (Last 7 Months)

Capital OneDiscover Bank
Product360 Performance SavingsvsOnline Savings Account
Latest APY3.50 %3.50 %
TrendSidewaysSideways
Slope (bps/mo)-4.0-4.3
Rate Changes / Mo0.410.41
Days Since Last Change6565
High (-7 m)3.80 %3.75 %
Low (-7 m)3.50 %3.50 %
Draw-down from High-7.9 %-6.7 %
Volatility (CV)0.0250.026
APY Insights Glossary
Latest APY
Most recent advertised annual-percentage yield.
Trend
Direction over the last 7 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 (-7 m)
Highest APY in the last 220 days.
Low (-7 m)
Lowest APY in the last 220 days.
Draw-down from High
How far today sits below the 7-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.

Calculate Savings Growth for Capital One vs Discover Bank

All calculations are based on APY.

Capital One

APY: 3.50%

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

Effective APY: 3.50% (based on your deposit and contributions)

Total balance: $20,114.1

Earnings: $2,114.1

Bank Overview

Discover Bank

APY: 3.50%

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

Effective APY: 3.50% (based on your deposit and contributions)

Total balance: $20,114.1

Earnings: $2,114.1

Bank Overview

With a $5,000 initial deposit and $13,000 in total contributions over 5 years, Capital One's total earnings would be the same as Discover Bank's total earnings.

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

More Comparisons

Compare Capital One's APY of 3.50% with other banks
Compare Discover Bank's APY of 3.50% with other banks