Marcus By Goldman Sachs vs Zynlo Bank
High-Yield Savings Accounts Comparison

Last Updated: September 5, 2025

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Summary of Marcus by Goldman Sachs vs. Zynlo Bank

As of September 5, 2025 Marcus by Goldman Sachs offers an APY of 3.65% for its Marcus Online 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 $70 more than Marcus by Goldman Sachs on a $10,000 balance after one year. Marcus by Goldman Sachs pays $365, while Zynlo Bank pays $435 - an APY advantage for Zynlo Bank.

Marcus by Goldman Sachs

Strengths

  • Marcus by Goldman Sachs has a high App Store rating of 4.8.
  • No minimum deposit requirement for the Marcus Online Savings Account.
  • Marcus by Goldman Sachs has a solid BBB rating of A+.

Potential Drawbacks

  • Marcus Online Savings Account offers a lower APY of 3.65% compared to Zynlo Bank.
  • Marcus by Goldman Sachs has no branches available.

Zynlo Bank

Strengths

  • Zynlo Bank offers a higher APY of 4.35% for the Tomorrow Savings Account.
  • No maintenance fees for the Tomorrow Savings Account.
  • Zynlo Bank has a minimum deposit of only $10.

Potential Drawbacks

  • Zynlo Bank has a lower App Store rating of 4.0.
  • Zynlo Bank is not BBB accredited despite having an A+ rating.
Summary: Marcus by Goldman Sachs offers a solid APY of 3.65% with high customer ratings, while Zynlo Bank provides a higher APY of 4.35% but lacks BBB accreditation. Both banks have no maintenance fees and no direct deposit requirements, but Marcus has a better App Store rating. Zynlo's lower App Store rating and lack of accreditation may concern some customers.

Compare Marcus by Goldman Sachs' vs Zynlo Bank's Savings Accounts

Marcus by Goldman SachsZynlo Bank
ProductMarcus Online Savings AccountvsTomorrow Savings Account
APY
3.65% (as of 9/5/2025)4.35% (as of 9/5/2025)
Bundled Account
NoNo
FDIC-insured
YesYes
Online OnlyYesYes
Compound Frequency
DailyDaily
Minimum Deposit$0$10
Minimum Balance for APY$0$0.01
Maintenance Fee$0$0
Direct Deposit Required
NoNo
App Store Rating4.8/54.0/5
Google Play Rating4.1/53.5/5
BBB RatingA+A+

Comparative Historical APY Insights (Last 6 Months)

Marcus by Goldman SachsZynlo Bank
ProductMarcus Online Savings AccountvsTomorrow Savings Account
Latest APY3.65 %4.35 %
TrendSidewaysSideways
Slope (bps/mo)-3.20.0
Rate Changes / Mo0.350.00
Days Since Last Change100172
High (-6 m)3.90 %4.35 %
Low (-6 m)3.65 %4.35 %
Draw-down from High-6.4 %0.0 %
Volatility (CV)0.0180.000
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 Marcus by Goldman Sachs vs Zynlo Bank

All calculations are based on APY.

Marcus by Goldman Sachs

APY: 3.65%

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

Effective APY: 3.65% (based on your deposit and contributions)

Total balance: $20,209.7

Earnings: $2,209.7

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, Marcus by Goldman Sachs's total earnings would be $452.3 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 Marcus by Goldman Sachs' APY of 3.65% with other banks
Compare Zynlo Bank's APY of 4.35% with other banks