High-Yield Savings Account Comparison

American Express vs. TIMBR

Compare rates, requirements, and features side-by-side to find the best option for you.

Analysis by Aviel Fahl
Updated December 6, 2025
Advertising Disclosure: We may earn a commission from partner links.

American Express

High Yield Savings Account

3.40%
APY
Dec 6, 2025
FDIC InsuredNo MinimumsGreat iOS App
Show Fine Print & Trends

TIMBR

Premium Savings Account

4.40%
APY
Dec 6, 2025
FDIC InsuredLow Minimums
Show Fine Print & Trends

Prefer In-Person Banking?

Both of these banks are online-only. If you need physical branch access, check out our list of high-yield accounts with brick-and-mortar locations.

Find Branch Access

Comparison Analysis

Comparing American Express vs. TIMBR

Updated: Dec 6, 2025

Why American Express?

  • Higher rated iOS app (4.9 vs 0.0)

Why TIMBR?

  • Higher potential APY (4.40% vs 3.40%) on all balances

— Key Feature Differences —

Better Returns at $10,000
TIMBR

TIMBR's Premium Savings Account earns more on smaller deposits (approx. $440 vs $340/yr).

Better Returns at $25,000
TIMBR

TIMBR's Premium Savings Account pulls ahead with larger amounts (approx. $1100 vs $850/yr).

Best for Simplicity
TIMBR

TIMBR's Premium Savings Account offers 4.40% APY with no bundling, direct deposit requirement or caps.

Best Mobile App Experience
American Express

American Express offers an iOS app rated 4.9 (vs. 0.0) and Android app rated 3.6 (vs. 0.0)

Shared Benefits

Both offer monthly maintenance-free account options Available Nationwide Available to New & Existing Customers
The Bottom Line

Over a 1-year period, TIMBR's Premium Savings Account pays $100 more interest on a $10,000 balance than American Express's High Yield Savings Account.

American ExpressTIMBR
Automated Data Audit

Executive Summary

TIMBR offers a Premium Savings Account with a competitive APY of 4.40%, significantly higher than American Express's High Yield Savings Account, which yields 3.40%. Both accounts are online-only and have no maintenance fees, but TIMBR requires a minimum deposit of $1,000. American Express has the advantage of a highly rated mobile app, with an iOS rating of 4.9. However, for those seeking higher returns, TIMBR's account is the clear winner.

Analysis generated based on current Banksparency database records

* AI-generated content provided for informational purposes only. Accuracy is not guaranteed; always verify details with the provider.

Top Market Contenders

See who beats both American Express and TIMBR.

Compare All High-Yield Savings Accounts
Pibank
Pibank Savings
FDIC InsuredNo Minimums
4.60% APY
+0.20% vs TIMBR
Better Rate
Neighbors Bank
Neighbors Savings Account
FDIC InsuredNo MinimumsGreat Android App
4.50% APY
+0.10% vs TIMBR
Better Rate
FeatureAmerican ExpressTIMBR
APY
3.40%
Verified: 12/6/2025
↘︎ 0.10%90d Change
4.40%
Verified: 12/6/2025
Stable (90d)
Product NameHigh Yield Savings AccountPremium Savings Account
Minimum Deposit$0$1,000
Min. Balance for APY$0$0
Monthly Fee$0$0
Branch AccessNoneNone
Account Type
Online Only
Online Only
Direct Deposit Req.NoneNone
Checking BundleNoNo
Mobile Apps
iOS4.9
Android3.6
iOS-
Android-
BBB RatingFA+
Next Steps

Savings Comparison

Calculations based on current APY.
$
$

TIMBR earns $644.2 more than American Express.

American Express

High Yield Savings Account

3.40% APY

Savings Breakdown

  • Interest Earned
    +$2,050.50(10.2%)
  • Total Contributions
    $13,000
  • Initial Deposit
    $5,000

Projected Balance

$20,050.50

Effective APY
3.40%

TIMBR

Premium Savings Account

4.40% APY

Savings Breakdown

  • Interest Earned
    +$2,694.70(13.0%)
  • Total Contributions
    $13,000
  • Initial Deposit
    $5,000

Projected Balance

$20,694.70

Effective APY
4.40%

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

📈 Compare Savings Rates Over Time

Historical Performance

Last 10 Months Analysis
MetricAmerican ExpressTIMBR
High Yield Savings AccountPremium Savings Account
Current APY
3.40%4.40%
Trend
Stable Stable
Velocity (bps/mo)
-3.0-1.3
Days Since Change
10236
10-Month High
3.80%4.55%
10-Month Low
3.40%4.40%
Adjustments / Mo
0.410.10
Volatility Score
0.0260.013
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 290-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 American Express' APY of 3.40% with other banks
Bank PairCompetitor APYMin Deposit
American Express vs Ally Bank3.30%$0
American Express vs Axos Bank4.31%$0
American Express vs Bank of America0.01%$100
American Express vs Barclays4.00%$0
American Express vs Bask Bank3.90%$0
American Express vs BMO Alto3.25%$0
American Express vs BrioDirect4.00%$5,000
American Express vs Capital One3.40%$0
American Express vs Chase Bank0.01%$0
American Express vs Chime3.50%$0
American Express vs CIT Bank3.75%$100
American Express vs Citibank3.30%$0
American Express vs Citizens Access™3.35%$0.01
American Express vs Climate First Bank4.21%$50
American Express vs Discover Bank3.40%$0
American Express vs Elevault4.08%$0
American Express vs EverBank4.05%$0
American Express vs Fitness Bank4.75%$100
American Express vs FNBO Direct3.00%$1
American Express vs Forbright Bank4.00%$0
American Express vs FVCbank3.85%$500
American Express vs GO2bank4.50%$0
American Express vs Ivy Bank4.25%$2,500
American Express vs LendingClub4.20%$0
American Express vs Marcus by Goldman Sachs3.65%$0
American Express vs Neighbors Bank4.50%$0
American Express vs Newtek Bank4.35%$0.01
American Express vs Openbank4.20%$500
American Express vs Peak Bank4.20%$100
American Express vs Pibank4.60%$0
American Express vs PNC3.53%$0
American Express vs Presidential Bank4.00%$5,000
American Express vs Quontic Bank3.75%$100
American Express vs Salem Five Direct3.71%$10
American Express vs Santander Bank0.01%$25
American Express vs SoFi Bank4.30%$0
American Express vs Synchrony Bank3.65%$0
American Express vs UFB Direct3.71%$5000
American Express vs Valley Direct4.10%$1,000
American Express vs Varo Bank5.00%$0
American Express vs Vio Bank4.16%$100
American Express vs Wealthfront4.15%$0
American Express vs Wells Fargo0.05%$25
American Express vs Zynlo Bank4.05%$10
Compare TIMBR's APY of 4.40% with other banks