High-Yield Savings Account Comparison

Affirm vs. SoFi Bank

Comparing Affirm and SoFi Bank for high-yield savings: Affirm's Affirm Money Account 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 March 18, 2026

The Bottom Line

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

Choose Affirm if you want a no-strings-attached account, you want to avoid a promo rate with a scheduled drop, or you're an Android user. Choose SoFi Bank if getting the best rate matters most, or you want Zelle for quick transfers.

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%). Affirm'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 Affirm offers its savings account standalone.

Comparison of Affirm vs SoFi Bank savings accounts
Metric

Affirm

Affirm Money Account

Mar 18, 2026

SoFi Bank

SoFi Savings

Mar 24, 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
While Affirm is not a bank, it is FDIC-insured through partner Cross River Bank.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 AppDaily CompoundingRate Changes Often
FDIC InsuredNo MinimumsGreat iOS AppZelle® SupportedChecking BundleDaily 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 Affirm vs. SoFi Bank

Updated: Mar 18, 2026

Executive Summary

SoFi Bank offers a competitive APY of 4.00% on its SoFi Savings account, which includes a temporary 0.70% boost for six months, available with direct deposit or a $10/month subscription fee. This account is bundled with a checking account that earns 0.50% APY. In comparison, Affirm's Affirm Money Account provides a lower APY of 3.20% but stands out for its simplicity, requiring no direct deposit or maintenance fees. Both accounts are online-only and FDIC-insured, making them accessible without physical branches. Overall, SoFi Bank is the winner based on the higher APY.

The analysis is based on current Banksparency database records

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

Why Affirm?

  • No checking account or direct deposit required
  • Higher rated Android app (4.8 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
  • Fast transfers via Zelle®

— 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
Affirm

Affirm's Affirm Money Account 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
Affirm

Affirm offers an iOS app rated 4.9 (vs. 4.7) and Android app rated 4.8 (vs. 3.9)

Shared Benefits

Both offer monthly maintenance-free account options Both banks have options with $0 opening deposit 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 Affirm's Affirm Money Account.

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

AffirmSoFi Bank
Verify At
Affirm

Non-sponsored link to official site

Verify At
SoFi Bank

Non-sponsored link to official site

Top Market Contenders

Synchrony Bank
3.50% APY
Ally Bank
3.20% APY
Marcus by Goldman Sachs
3.65% APY

Affirm vs. SoFi Bank Savings Calculator

Calculations based on current APY for Affirm Money Account and SoFi Savings
$
$

You earn $44.9 more with SoFi Bank than Affirm 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.

Affirm

Affirm Money Account

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 Affirm 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
FeatureAffirmSoFi Bank
APY
3.20%
Verified: 3/18/2026
↘︎ 0.40%90d Change
4.00%
Range: 3.30% - 4.00%
Verified: 3/24/2026
Stable (90d)
Product NameAffirm Money AccountSoFi Savings
Minimum Deposit$0$0
Min. Balance for APY$0$0
Monthly Fee$0$0
Compound FrequencyDailyDaily
Branch AccessNoneNone
Account Type
Online Only
Online Only
Physical BranchesNoneN/A
Direct Deposit Req.NoneWhile direct deposit is not required, the alternative is a subscription fee of $10/month
Checking BundleNo Yes
Mobile Apps
iOS4.9
Android4.8
iOS4.7
Android3.9
FDIC Insured
Zelle® Support
Not Supported
Available
Native support added in 2024 for banking members.
BBB RatingA+A+
Important NotesWhile Affirm is not a bank, it is FDIC-insured through partner Cross River Bank.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
Visit Site

Non-sponsored link to official site

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📈 Compare Savings Rates Over Time

Historical Performance

Last 12 Months Analysis
MetricAffirmSoFi Bank
Affirm Money AccountSoFi Savings
Current APY
3.20%4.00%
Trend
Stable Stable
Velocity (bps/mo)
-6.13.1
Days Since Change
7185
12-Month High
3.85%4.50%
12-Month Low
3.20%3.80%
Adjustments / Mo
0.330.25
Volatility Score
0.0730.064
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 Affirm's APY of 3.20% with other banks
Compare SoFi Bank's APY of 4.00% with other banks