Capital One vs Zynlo Bank
High-Yield Savings Accounts Comparison

Last Updated: September 5, 2025

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Summary of Capital One vs. Zynlo Bank

As of September 5, 2025 Capital One offers an APY of 3.50% for its 360 Performance Savings account, with a minimum balance of $0, compared to Zynlo Bank's 4.35% APY for its Tomorrow Savings Account, with a minimum balance of $0.01.

Zynlo Bank yields $85 more than Capital One on a $10,000 balance after one year. Capital One pays $350, while Zynlo Bank pays $435 - an APY advantage for Zynlo Bank.

Capital One

Strengths

  • Capital One has over 200 branches across several states.
  • Capital One offers a competitive APY of 3.50% on its 360 Performance Savings account.
  • Capital One has a high App Store rating of 4.9.

Potential Drawbacks

  • Capital One's APY has not changed in the last 30 days.

Zynlo Bank

Strengths

  • Zynlo Bank offers a higher APY of 4.35% on its Tomorrow Savings Account.
  • Zynlo Bank has no maintenance fees for its savings account.
  • Zynlo Bank allows a low minimum deposit of $10.

Potential Drawbacks

  • Zynlo Bank is not BBB Accredited despite having an A+ rating.
  • Zynlo Bank's App Store rating is lower at 4.0.
Summary: Zynlo Bank offers a higher APY of 4.35% compared to Capital One's 3.50%, making it more attractive for savers. However, Capital One provides physical branches and a higher App Store rating of 4.9. Both banks have no maintenance fees, but Zynlo Bank lacks BBB accreditation despite an A+ rating. Capital One's APY has remained stable, while Zynlo's APY is also unchanged over the last 30 days.

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

Capital OneZynlo Bank
Product360 Performance SavingsvsTomorrow Savings Account
APY
3.50% (as of 9/5/2025)4.35% (as of 9/5/2025)
Bundled Account
NoNo
FDIC-insured
YesYes
Online OnlyNoYes
Compound Frequency
MonthlyDaily
Minimum Deposit$0$10
Minimum Balance for APY$0$0.01
Maintenance Fee$0$0
Direct Deposit Required
NoNo
App Store Rating4.9/54.0/5
Google Play Rating4.5/53.5/5
BBB RatingA+A+

Comparative Historical APY Insights (Last 6 Months)

Capital OneZynlo Bank
Product360 Performance SavingsvsTomorrow Savings Account
Latest APY3.50 %4.35 %
TrendSidewaysSideways
Slope (bps/mo)-3.70.0
Rate Changes / Mo0.350.00
Days Since Last Change71172
High (-6 m)3.70 %4.35 %
Low (-6 m)3.50 %4.35 %
Draw-down from High-5.4 %0.0 %
Volatility (CV)0.0190.000
APY Insights Glossary
Latest APY
Most recent advertised annual-percentage yield.
Trend
Direction over the last 6 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 (-6 m)
Highest APY in the last 173 days.
Low (-6 m)
Lowest APY in the last 173 days.
Draw-down from High
How far today sits below the 6-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 Zynlo 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

Zynlo Bank

APY: 4.35%

Total savings breakdown:

  • Interest earned: $2,662 (12.88%)
  • Total contributions: $13,000 (62.92%)
  • Initial deposit: $5,000 (24.20%)

Your total balance

$20,662.00

Effective APY: 4.35% (based on your deposit and contributions)

Total balance: $20,662

Earnings: $2,662

Bank Overview

With a $5,000 initial deposit and $13,000 in total contributions over 5 years, Capital One's total earnings would be $547.9 lower than Zynlo 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 Zynlo Bank's APY of 4.35% with other banks