American Express vs Timbr
High-Yield Savings Accounts Comparison

Last Updated: September 5, 2025

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Summary of American Express vs. TIMBR

As of September 5, 2025 American Express offers an APY of 3.50% for its High Yield Savings Account, with a minimum balance of $0, compared to TIMBR's 4.40% APY for its Premium Savings Account, with a minimum balance of $0.

TIMBR yields $90 more than American Express on a $10,000 balance after one year. American Express pays $350, while TIMBR pays $440 - an APY advantage for TIMBR.

American Express

Strengths

  • No minimum deposit required for the High Yield Savings Account.
  • No maintenance fees associated with the account.
  • High App Store rating of 4.9.

Potential Drawbacks

  • BBB rating is F, indicating low trustworthiness.
  • Only one account option available with an APY of 3.50%.
  • Google Play rating is lower at 3.8.

TIMBR

Strengths

  • Offers a higher APY of 4.40% for the Premium Savings Account.
  • BBB rating is A+, indicating high trustworthiness.
  • No maintenance fees associated with the account.

Potential Drawbacks

  • Requires a minimum deposit of $1,000 to open the account.
  • Only one account option available.
  • Google Play rating not specified.
Summary: American Express offers a competitive APY of 3.50% with no minimum deposit, but has a poor BBB rating of F. In contrast, TIMBR provides a higher APY of 4.40%, a strong BBB rating of A+, but requires a $1,000 minimum deposit. Both banks have no maintenance fees, but American Express has a higher App Store rating while TIMBR's Google Play rating is unspecified.

Compare American Express' vs TIMBR's Savings Accounts

American ExpressTIMBR
ProductHigh Yield Savings AccountvsPremium Savings Account
APY
3.50% (as of 9/5/2025)4.40% (as of 9/5/2025)
Bundled Account
NoNo
FDIC-insured
YesYes
Online OnlyYesYes
Compound Frequency
DailyDaily
Minimum Deposit$0$1,000
Minimum Balance for APY$0$0
Maintenance Fee$0$0
Direct Deposit Required
NoNo
App Store Rating4.9/5No
Google Play Rating3.8/5No
BBB RatingFA+

Comparative Historical APY Insights (Last 6 Months)

American ExpressTIMBR
ProductHigh Yield Savings AccountvsPremium Savings Account
Latest APY3.50 %4.40 %
TrendSidewaysSideways
Slope (bps/mo)-3.8-2.6
Rate Changes / Mo0.450.15
Days Since Last Change44144
High (-6 m)3.80 %4.55 %
Low (-6 m)3.50 %4.40 %
Draw-down from High-7.9 %-3.3 %
Volatility (CV)0.0220.015
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 198 days.
Low (-6 m)
Lowest APY in the last 198 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 American Express vs TIMBR

All calculations are based on APY.

American Express

APY: 3.50%

Total savings breakdown:

  • Interest earned: $2,114.1 (10.51%)
  • Total contributions: $13,000 (64.63%)
  • Initial deposit: $5,000 (24.86%)

Your total balance

$20,114.10

Effective APY: 3.50% (based on your deposit and contributions)

Total balance: $20,114.1

Earnings: $2,114.1

Bank Overview

TIMBR

APY: 4.40%

Total savings breakdown:

  • Interest earned: $2,694.7 (13.02%)
  • Total contributions: $13,000 (62.82%)
  • Initial deposit: $5,000 (24.16%)

Your total balance

$20,694.70

Effective APY: 4.40% (based on your deposit and contributions)

Total balance: $20,694.7

Earnings: $2,694.7

Bank Overview

With a $5,000 initial deposit and $13,000 in total contributions over 5 years, American Express's total earnings would be $580.6 lower than TIMBR's total earnings.

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

More Comparisons

Compare American Express' APY of 3.50% with other banks
Compare TIMBR's APY of 4.40% with other banks