High-Yield Savings Account Comparison

BMO Alto vs. Openbank

Comparing BMO Alto and Openbank for high-yield savings: BMO Alto's Savings Account pays 3.00% APY while Openbank's High-Yield Savings Account pays 4.00% APY.

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

Analysis by Aviel Fahl
Updated July 6, 2026

The Bottom Line

Who pays more interest on $10,000? Openbank pays $100 more than BMO Alto annually ($400 vs $300).

Choose Openbank if getting the best rate matters most, you're an iPhone user (no iOS app for BMO Alto), or you're an Android user (no Android app for BMO Alto).

Comparison of BMO Alto vs Openbank savings accounts
Metric

BMO Alto

Savings Account

Jul 6, 2026

Openbank

High-Yield Savings Account

Jun 2, 2026
APY3.00%4.00%
Est. Earnings
$5,000+$150
$10,000+$300
$25,000+$750
$5,000+$200
$10,000+$400
$25,000+$1,000
Min Deposit
$0$500

Snapshot view. Rates subject to change.

Features
FDIC InsuredNo MinimumsDaily CompoundingRate Changes Often
FDIC InsuredLow MinimumsGreat iOS AppRate Changes Often

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 BMO Alto vs. Openbank

Updated: Jul 6, 2026

Executive Summary

Openbank offers a High-Yield Savings Account with a competitive APY of 4.00%, making it the winner in this comparison. This account requires a minimum deposit of $500 and has no maintenance fees, while also being online-only. BMO Alto provides a Savings Account with a lower APY of 3.00%, which is also online-only and has no minimum deposit or maintenance fees. Both accounts do not require direct deposit, but Openbank's account yields higher returns, especially for larger 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 BMO Alto?

No distinct advantages found vs Openbank.

Why Openbank?

  • Higher potential APY (4.00% vs 3.00%) on all balances
  • Higher rated iOS app (4.6 vs 0.0)

— Key Feature Differences —

Better Returns at $10,000
Openbank

Openbank's High-Yield Savings Account earns more on smaller deposits (approx. $400 vs $300/yr).

Better Returns at $25,000
Openbank

Openbank's High-Yield Savings Account pulls ahead with larger amounts (approx. $1000 vs $750/yr).

Best for Simplicity
Openbank

Openbank's High-Yield Savings Account offers 4.00% APY with no bundling, direct deposit requirement or caps.

Shared Benefits

Both offer monthly maintenance-free account options Available Nationwide Available to New & Existing Customers
The Bottom Line on APY (Interest Only)

Over a 1-year period, Openbank's High-Yield Savings Account pays $100 more interest on a $10,000 balance than BMO Alto's Savings Account.

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

BMO AltoOpenbank
Verify At
BMO Alto

Non-sponsored link to official site

Verify At
Openbank

Non-sponsored link to official site

Top Market Contenders

Axos Bank
4.21% APY
Discover Bank
3.30% APY
Synchrony Bank
3.30% APY

BMO Alto vs. Openbank Savings Calculator

Calculations based on current APY for Savings Account and High-Yield Savings Account
$
$

You earn $100 more with Openbank than BMO Alto 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.

BMO Alto

Savings Account

3.00% APY

Savings Breakdown

  • Interest Earned
    +$300.00(2.9%)
  • Total Contributions
    $0
  • Initial Deposit
    $10,000

Projected Balance

$10,300.00

Effective APY
3.00%

Openbank

High-Yield Savings Account

4.00% APY

Savings Breakdown

  • Interest Earned
    +$400.00(3.8%)
  • Total Contributions
    $0
  • Initial Deposit
    $10,000

Projected Balance

$10,400.00

Effective APY
4.00%

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 $299 per year in interest.

Both BMO Alto and Openbank dramatically outperform the typical 0.01% APY at traditional big banks.

Big banks currently pay 0.01% APY on savings vs 3.00%+ here
FeatureBMO AltoOpenbank
APY
3.00%
Verified: 7/6/2026
↘︎ 0.15%90d Change
4.00%
Verified: 6/2/2026
↘︎ 0.09%90d Change
Product NameSavings AccountHigh-Yield Savings Account
Minimum Deposit$0$500
Min. Balance for APY$0$0
Monthly Fee$0$0
Compound FrequencyDailyMonthly
Branch AccessNoneNone
Account Type
Online Only
Online Only
Physical BranchesNoneNone
Direct Deposit Req.NoneNone
Checking BundleNoNo
Mobile Apps
iOS-
Android-
iOS4.6
Android3.2
FDIC Insured
Zelle® Support
Not Supported
Not Supported
BBB RatingA+Not Rated
Next Steps
Visit Site

Non-sponsored link to official site

Visit Site

Non-sponsored link to official site

📈 Compare Savings Rates Over Time

Historical Performance

Last 12 Months Analysis
MetricBMO AltoOpenbank
Savings AccountHigh-Yield Savings Account
Current APY
3.00%4.00%
Trend
Stable Stable
Velocity (bps/mo)
-4.0-2.3
Days Since Change
-763
12-Month High
3.60%4.40%
12-Month Low
3.00%4.00%
Adjustments / Mo
0.330.33
Volatility Score
0.0490.020
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 BMO Alto's APY of 3.00% with other banks
Compare Openbank's APY of 4.00% with other banks