High-Yield Savings Account Comparison

Betterment vs. Synchrony Bank

Comparing Betterment and Synchrony Bank for high-yield savings: Betterment's Cash Reserve pays 3.90% APY while Synchrony Bank's High Yield Savings pays 3.50% APY.

See how they compare on rate stability, mobile app ratings, and more below.

Analysis by Aviel Fahl
Updated March 24, 2026

The Bottom Line

Who pays more interest on $10,000? Betterment pays $40 more than Synchrony Bank annually ($390 vs $350).

Choose Betterment if getting the best rate matters most.

Comparison of Betterment vs Synchrony Bank savings accounts
Metric

Betterment

Cash Reserve

Mar 24, 2026

Synchrony Bank

High Yield Savings

Mar 24, 2026
APY3.25% - 3.90%3.50%
Est. Earnings
$5,000+$195
$10,000+$390
$25,000+$975
$5,000+$175
$10,000+$350
$25,000+$875
Min Deposit
$10$0

Snapshot view. Rates subject to change.

Terms
Promo rate for new customers. 3.25% APY applies to existing customers.-
Features
FDIC InsuredLow MinimumsGreat iOS AppGreat Android AppRate Changes Often
FDIC InsuredNo MinimumsGreat iOS AppGreat Android AppDaily CompoundingRate Changes Often

Market Reality Check

Both of these banks offer rates below the current top tier. The best rates we track are currently above 4.15% APY.

See Top Rates

Comparison Analysis

Comparing Betterment vs. Synchrony Bank

Updated: Mar 24, 2026

Executive Summary

Betterment offers a competitive Cash Reserve savings account with an APY of 3.90%, making it the winner in this comparison. This rate is available only to new customers, while existing customers earn a lower rate of 3.25%. The account requires a minimum deposit of $10 and has no maintenance fees. In contrast, Synchrony Bank provides a High Yield Savings account with an APY of 3.50%, available to all customers with no minimum deposit or balance requirements. Both accounts are online-only and do not require direct deposits.

The analysis is based on current Banksparency database records

* This content is provided for informational purposes only; always verify details with the provider.

Why Betterment?

  • Higher potential APY (3.90% vs 3.50%) on all balances

Why Synchrony Bank?

  • No checking account or direct deposit required
  • Available to New & Existing Customers

— Key Feature Differences —

Better Returns at $10,000
Betterment

Betterment's Cash Reserve earns more on smaller deposits (approx. $390 vs $350/yr).

Better Returns at $25,000
Betterment

Betterment's Cash Reserve pulls ahead with larger amounts (approx. $975 vs $875/yr).

Best for Simplicity
Synchrony Bank

Synchrony Bank's High Yield Savings offers 3.50% APY with no bundling, direct deposit requirement or caps.

Shared Benefits

Both offer monthly maintenance-free account options Available Nationwide
The Bottom Line on APY (Interest Only)

Over a 1-year period, Betterment's Cash Reserve pays $40 more interest on a $10,000 balance than Synchrony Bank's High Yield Savings.

*This calculation assumes current rates remain consistent for 1 year and does not include temporary bonuses.

Synchrony BankBetterment
Verify At
Betterment

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Synchrony Bank

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Top Market Contenders

Betterment vs. Synchrony Bank Savings Calculator

Calculations based on current APY for Cash Reserve and High Yield Savings
$
$

You earn $40 more with Betterment than Synchrony Bank 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.

Betterment

Cash Reserve

3.90% APY

Savings Breakdown

  • Interest Earned
    +$390.00(3.8%)
  • Total Contributions
    $0
  • Initial Deposit
    $10,000

Projected Balance

$10,390.00

Effective APY
3.90%

Synchrony Bank

High Yield Savings

3.50% APY

Savings Breakdown

  • Interest Earned
    +$350.00(3.4%)
  • Total Contributions
    $0
  • Initial Deposit
    $10,000

Projected Balance

$10,350.00

Effective APY
3.50%

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

Still banking with Chase, Bank of America, or Wells Fargo?

On a $10,000 balance, you're missing out on at least $349 per year in interest.

Both Betterment and Synchrony Bank dramatically outperform the typical 0.01% APY at traditional big banks.

Big banks currently pay 0.01% APY on savings vs 3.50%+ here
FeatureBettermentSynchrony Bank
APY
3.90%
Range: 3.25% - 3.90%
Verified: 3/24/2026
↗︎ 0.65%90d Change
3.50%
Verified: 3/24/2026
↘︎ 0.15%90d Change
Product NameCash ReserveHigh Yield Savings
Minimum Deposit$10$0
Min. Balance for APY$0$0
Monthly Fee$0$0
Compound FrequencyN/ADaily
Branch AccessNoneNone
Account Type
Online Only
Online Only
Physical BranchesNoneN/A
Direct Deposit Req.NoneNone
Checking BundleNoNo
Mobile Apps
iOS4.8
Android4.7
iOS4.8
Android4.5
FDIC Insured
Yes
Zelle® Support
Not Supported
Not Supported
BBB RatingA-Not Rated
Important NotesPromo rate for new customers. 3.25% APY applies to existing customers.-
Next Steps
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📈 Compare Savings Rates Over Time

Historical Performance

Last 12 Months Analysis
MetricBettermentSynchrony Bank
Cash ReserveHigh Yield Savings
Current APY
3.90%3.50%
Trend
Stable Stable
Velocity (bps/mo)
-5.8-4.2
Days Since Change
3256
12-Month High
4.00%4.00%
12-Month Low
3.25%3.50%
Adjustments / Mo
0.330.25
Volatility Score
0.0830.043
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 365-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 Betterment's APY of 3.90% with other banks
Compare Synchrony Bank's APY of 3.50% with other banks
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