Citibank vs. Openbank
High-Yield Savings Account Comparison
By Aviel Fahl|Last Updated: November 12, 2025
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Summary of Citibank vs. Openbank
Key Metrics at a Glance
| Feature | Citibank | Openbank |
|---|---|---|
| Top Savings APY | 3.35% Citi Accelerate Savings | 4.20% High-Yield Savings Account |
| Minimum to Open | $0 | $500 |
| Minimum Balance for Top APY | $0.01 | $0 |
Citibank
Strengths
- Citi Accelerate Savings offers a competitive APY of 3.35%, slightly down from 3.40% last month.
- Citi Accelerate Savings has no minimum deposit requirement.
- Citi Accelerate Savings account can waive the $4.50 maintenance fee with a balance over $500.
Potential Drawbacks
- Citi's BBB rating is D- and it is not BBB Accredited.
- Citi Accelerate Savings has a maintenance fee of $4.50 if balance requirements aren't met.
- Citi's App Store rating is 4.9, but Google Play rating is lower at 4.8.
Openbank
Strengths
- Openbank's High-Yield Savings Account offers a higher APY of 4.20%.
- There are no maintenance fees for Openbank's savings account.
- Openbank has no minimum balance requirement.
Potential Drawbacks
- Openbank has no physical branches.
- Openbank's App Store rating is lower at 3.2, matching its Google Play rating.
- Openbank is not rated by the BBB and is not BBB Accredited.
Summary: Openbank offers a significantly higher APY of 4.20% compared to Citi's 3.35%. While both banks lack BBB accreditation, Citi has a D- rating. Openbank has no maintenance fees, while Citi charges $4.50 unless balance requirements are met. However, Citi has a better App Store rating of 4.9 compared to Openbank's 3.2. Overall, Openbank may be more appealing for higher returns, while Citi provides more established ratings.
→ As of November 12, 2025 Citibank offers an APY of 3.35% for its Citi Accelerate Savings account, with a minimum balance of $0.01, compared to Openbank's 4.20% APY for its High-Yield Savings Account, with a minimum balance of $0.
→ Openbank yields $85 more than Citibank on a $10,000 balance after one year. Citibank pays $335, while Openbank pays $420 - an APY advantage for Openbank.
→ In addition, Citibank also offers 0.03% APY for the Citi® Savings Account account.
Calculate Savings Growth for Citibank vs Openbank
All calculations are based on APY.
Citibank - Citi Accelerate Savings
Top APY: 3.35%
Total savings breakdown:
- Interest earned: $2,018.8 (10.08%)
- Total contributions: $13,000 (64.94%)
- Initial deposit: $5,000 (24.98%)
Your total balance
$20,018.80
Effective APY: 3.35% (based on your deposit and contributions)
Total balance: $20,018.8
Earnings: $2,018.8
Bank OverviewOpenbank - High-Yield Savings Account
Top APY: 4.20%
Total savings breakdown:
- Interest earned: $2,564.3 (12.47%)
- Total contributions: $13,000 (63.22%)
- Initial deposit: $5,000 (24.31%)
Your total balance
$20,564.30
Effective APY: 4.20% (based on your deposit and contributions)
Total balance: $20,564.3
Earnings: $2,564.3
Bank OverviewWith a $5,000 initial deposit and $13,000 in total contributions over 5 years, Citibank's total earnings would be $545.5 lower than Openbank's total earnings.
The Banksparency Savings Calculator provides estimated savings growth based on user input and our latest data.
Compare Citibank's vs Openbank's Savings Accounts
| Citibank | Openbank | |||
|---|---|---|---|---|
| Product | Citi Accelerate Savings | Citi® Savings Account | vs | High-Yield Savings Account |
| APY | 3.35% (as of 11/12/2025) | 0.03% (as of 11/12/2025) | 4.20% (as of 11/12/2025) | |
| Bundled Account | No | No | No | |
| FDIC-insured | Yes | Yes | Yes | |
| Online Only | Yes | No | Yes | |
| Compound Frequency | Daily | Daily | Monthly | |
| Minimum Deposit | $0 | $0 | $500 | |
| Minimum Balance for APY | $0.01 | $0.01 | $0 | |
| Maintenance Fee | $4.50. Waived for average monthly balances > $500 | $4.50. Waived for average monthly balances > $500 | $0 | |
| Direct Deposit Required | No | No | No | |
| Eligibility | Alaska, Alabama, Arkansas, Arizona, Colorado, Delaware, Florida (select parts), Georgia, Hawaii, Iowa, Idaho, Illinois (select parts), Indiana, Kansas, Kentucky, Louisiana, Maine, Michigan, Minnesota, Missouri, Mississippi, Montana, North Carolina, North Dakota, Nebraska, New Hampshire, New Mexico, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Virginia (partial), Washington (partial), Wisconsin, West Virginia, Wyoming. | California, Connecticut, Maryland, Nevada, New Jersey, New York, Virginia (partial), Washington D.C., and select parts of Florida and Illinois. In addition, promotional rates may be available if requirements are met. | United States | |
| App Store Rating | 4.9/5 | 3.2/5 | ||
| Google Play Rating | 4.8/5 | 3.2/5 | ||
| BBB Rating | D- | Not Rated | ||
Comparative Historical APY Insights (Last 9 Months)
| Citibank | Openbank | |||
|---|---|---|---|---|
| Product | Citi® Savings Account | Citi Accelerate Savings | vs | High-Yield Savings Account |
| Latest APY | 0.03 % | 3.35 % | 4.20 % | |
| Trend | Sideways | Sideways | Sideways | |
| Slope (bps/mo) | 0.0 | -4.7 | -4.0 | |
| Rate Changes / Mo | 0.00 | 0.58 | 0.35 | |
| Days Since Last Change | 260 | 9 | 114 | |
| High (-9 m) | 0.03 % | 3.80 % | 4.75 % | |
| Low (-9 m) | 0.03 % | 3.35 % | 4.20 % | |
| Draw-down from High | 0.0 % | -11.8 % | -11.6 % | |
| Volatility (CV) | 0.000 | 0.035 | 0.028 | |
APY Insights Glossary
- Latest APY
- Most recent advertised annual-percentage yield.
- Trend
- Direction over the last 9 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 (-9 m)
- Highest APY in the last 260 days.
- Low (-9 m)
- Lowest APY in the last 260 days.
- Draw-down from High
- How far today sits below the 9-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.