High-Yield Savings Account Comparison

Capital One vs. SoFi Bank

Comparing Capital One and SoFi Bank for high-yield savings: Capital One's 360 Performance Savings pays 3.20% APY while SoFi Bank's SoFi Savings pays 4.00% APY (including a 6-month 0.70% promo boost).

Note: SoFi Bank requires a checking account.

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

Analysis by Aviel Fahl
Updated April 21, 2026

The Bottom Line

Who pays more interest on $10,000? SoFi Bank pays $45 more than Capital One annually ($365 vs $320).

Choose Capital One if you want a no-strings-attached account, you want to avoid a promo rate with a scheduled drop, you value in-person banking, or you're an Android user. Choose SoFi Bank if getting the best rate matters most.

Important Considerations

The key difference? SoFi Bank's 4.00% rate includes a promotional bonus for the first 6 months, after which it reverts to the standard rate (currently 3.30%). Capital One's 3.20% rate has no scheduled drop, though all rates are subject to change.

SoFi Bank requires a checking account to unlock its top savings rate, while Capital One offers its savings account standalone.

Comparison of Capital One vs SoFi Bank savings accounts
Metric

Capital One

360 Performance Savings

Apr 21, 2026

SoFi Bank

SoFi Savings

Apr 21, 2026
APY3.20%3.30% - 4.00%
Est. Earnings
$5,000+$160
$10,000+$320
$25,000+$800
$5,000+$183
$10,000+$365
$25,000+$913
Min Deposit
$0$0

Snapshot view. Rates subject to change.

Terms
-Limited offer: The 4.00% includes a temporary 0.70% APY boost for 6 months. It is available with a direct deposit of regular income, or a $10/month subscription. See terms at SoFi Bank. The savings account comes bundled with a checking account with a 0.50% APY.
Features
FDIC InsuredNo MinimumsGreat iOS AppGreat Android AppIn-Person AccessZelle® SupportedRate Changes Often
FDIC InsuredNo MinimumsGreat iOS AppZelle® SupportedChecking BundleDaily CompoundingRate Changes Often

Comparison Analysis

Comparing Capital One vs. SoFi Bank

Updated: Apr 21, 2026

Executive Summary

SoFi Bank's SoFi Savings leads with a competitive 4.00% APY, which includes a temporary 0.70% boost for six months, available through direct deposit or a $10/month subscription. This account is online-only and comes bundled with a checking account offering a 0.50% APY. In comparison, Capital One's 360 Performance Savings offers a solid 3.20% APY with no direct deposit requirement and no maintenance fees, making it an excellent choice for simplicity. Both accounts have no minimum deposit or balance requirements, but SoFi's higher yield positions it as the winner.

The analysis is based on current Banksparency database records

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

Why Capital One?

  • No checking account or direct deposit required
  • 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 3.9)

Why SoFi Bank?

  • Earn a $50 bonus with $1,000+ in direct deposits, or $300 with $5,000+.
  • Earn 0.50% APY on checking account with access to 55,000+ fee free ATMs
  • Higher potential APY (4.00% vs 3.20%) on all balances

— Key Feature Differences —

Better Returns at $10,000
SoFi Bank

SoFi Bank's SoFi Savings earns more on smaller deposits (approx. $365 vs $320/yr).

Better Returns at $25,000
SoFi Bank

SoFi Bank's SoFi Savings pulls ahead with larger amounts (approx. $913 vs $800/yr).

Best for Simplicity
Capital One

Capital One's 360 Performance Savings offers 3.20% APY with no bundling, direct deposit requirement or caps.

Best for All-in-One Banking
SoFi Bank

SoFi Bank's SoFi Savings pays a superior APY for customers who also open a checking account.

Best Mobile App Experience
Capital One

Capital One offers an iOS app rated 4.8 (vs. 4.7) and Android app rated 4.5 (vs. 3.9)

Shared Benefits

Both offer monthly maintenance-free account options Both banks have options with $0 opening deposit Fast transfers via Zelle® Available Nationwide Available to New & Existing Customers
The Bottom Line on APY (Interest Only)PROMO DETECTED

Over a 1-year period (factoring in a 6-month promo), SoFi Bank's SoFi Savings pays $45 more interest on a $10,000 balance than Capital One's 360 Performance Savings.

*SoFi Bank's calculation includes their 6-month introductory promotional rate and subsequent standard rate.

Capital OneSoFi Bank
Verify At
Capital One

Non-sponsored link to official site

Verify At
SoFi Bank

Non-sponsored link to official site

Top Market Contenders

American Express
3.20% APY
Marcus by Goldman Sachs
3.50% APY

Capital One vs. SoFi Bank Savings Calculator

Calculations based on current APY for 360 Performance Savings and SoFi Savings
$
$

You earn $44.9 more with SoFi Bank than Capital One 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.

Capital One

360 Performance Savings

3.20% APY

Savings Breakdown

  • Interest Earned
    +$320.00(3.1%)
  • Total Contributions
    $0
  • Initial Deposit
    $10,000

Projected Balance

$10,320.00

Effective APY
3.20%

SoFi Bank

SoFi Savings

4.00% APY

Promo Rate: 4.00% for 6 months, then 3.30%.

Savings Breakdown

  • Interest Earned
    +$364.90(3.5%)
  • Total Contributions
    $0
  • Initial Deposit
    $10,000

Projected Balance

$10,364.90

Effective APY
3.65%

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 $319 per year in interest.

Both Capital One and SoFi Bank dramatically outperform the typical 0.01% APY at traditional big banks.

Big banks currently pay 0.01% APY on savings vs 3.20%+ here
FeatureCapital OneSoFi Bank
APY
3.20%
Verified: 4/21/2026
↘︎ 0.10%90d Change
4.00%
Range: 3.30% - 4.00%
Verified: 4/21/2026
Stable (90d)
Product Name360 Performance SavingsSoFi Savings
Minimum Deposit$0$0
Min. Balance for APY$0$0
Monthly Fee$0$0
Compound FrequencyMonthlyDaily
Branch AccessYesNone
Account Type
Online & Branches
Online Only
Physical BranchesOver 200 branches in Louisiana, Maryland, New Jersey, New York, Texas, Virginia and Washington, D.C.N/A
Direct Deposit Req.NoneWhile direct deposit is not required, the alternative is a subscription fee of $10/month
Checking BundleNo Yes
Mobile Apps
iOS4.8
Android4.5
iOS4.7
Android3.9
FDIC Insured
Zelle® Support
Available
Limit: $2,500/dayAvailable for 360 Checking accounts.
Available
Native support added in 2024 for banking members.
BBB RatingA+A+
Important Notes-Limited offer: The 4.00% includes a temporary 0.70% APY boost for 6 months. It is available with a direct deposit of regular income, or a $10/month subscription. See terms at SoFi Bank. The savings account comes bundled with a checking account with a 0.50% APY.
Next Steps
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📈 Compare Savings Rates Over Time

Historical Performance

Last 12 Months Analysis
MetricCapital OneSoFi Bank
360 Performance SavingsSoFi Savings
Current APY
3.20%4.00%
Trend
Stable Stable
Velocity (bps/mo)
-3.52.0
Days Since Change
40119
12-Month High
3.60%4.50%
12-Month Low
3.20%3.80%
Adjustments / Mo
0.330.25
Volatility Score
0.0370.061
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 Capital One's APY of 3.20% with other banks
Compare SoFi Bank's APY of 4.00% with other banks