4.5/5
Service Evaluation
Key Takeaway: Openbank by Santander (Expert Score: 4.5/5.0)
Openbank is the online-only U.S. division of Santander Bank, N.A., and offers a single product: a high-yield savings account paying 3.80% APY on all balances with no monthly fees. The minimum opening deposit is $500, which is higher than many online competitors, but there is no ongoing minimum balance. Deposits are FDIC-insured up to $250,000 per depositor through Santander Bank, N.A.
Openbank by Santander earns a BestGuide Expert Score of 4.5/5.0, reflecting a strong rate paired with a deliberately narrow product lineup. This Openbank review covers the high-yield savings account, its rate, the $500 opening minimum, and the backing behind it so you can judge whether it fits. The account currently pays 3.80% APY on every dollar, one of the higher rates among online banks. Openbank reviews from early U.S. users tend to praise the rate while noting the bank is new to the American market, having launched here in October 2024 and gone nationwide in April 2025. You can see how it stacks up against rivals in our high-yield savings buyer’s guide. For full transparency on our scoring, see How BestGuide calculates Expert Scores.
How Openbank Works
Openbank is a division of Santander Bank, N.A., operating entirely through its website and mobile app. In the United States it offers one account type, a High Yield Savings account, with no checking, CDs, or money market options at this time.
The account pays 3.80% APY on all balances, a variable rate that can change at the bank’s discretion. There is no ongoing minimum balance to earn the rate, but a $500 minimum deposit is required to open the account, which is higher than many online savings competitors.
There are no monthly maintenance fees and no transaction limits. The account does not include checks or a debit card, since it is designed for accumulating savings rather than spending. Notably, there is no mobile check deposit feature, so funding happens primarily through electronic transfers.
To open an account you must be a U.S. citizen or resident alien with a valid U.S. address, have a U.S. mobile number, and use the Openbank app on a smartphone as your trusted device. The account is available in all 50 states and the District of Columbia.
Who Openbank Is Best For
Openbank is best for savers focused on maximizing yield who want the stability of a globally established parent bank and do not need a full suite of products. If your priority is a strong rate on all balances with no monthly fees, and you can meet the $500 opening deposit, it is a direct fit.
It is a weaker choice for anyone who wants checking, CDs, branch service, or mobile check deposit, or for savers who prefer no opening minimum at all. Because Openbank’s U.S. operation is new, savers who place heavy weight on a long domestic track record may want to start with a smaller test deposit.
Openbank Standout Features
Competitive rate on every dollar: The 3.80% APY applies to all balances with no tiers, putting it among the higher rates available from online banks and ahead of several well-known competitors.
Global parent backing: Openbank is built on the technology and balance sheet of Santander, a global bank serving approximately 171 million customers worldwide, with Santander Bank, N.A. holding roughly $100 billion in U.S. assets.
No monthly or transaction fees: The account carries no monthly maintenance fee and no transaction limits, and it uses biometric security with trusted-device enrollment for app access.
Openbank Pros and Cons
| Pros | Cons |
|---|---|
| 3.80% APY on all balances: No tiers and no balance minimum to earn the rate. | $500 to open: A higher opening minimum than many online savings accounts. |
| No monthly fees: No maintenance fees and no transaction limits. | Single product: No checking, CDs, or money market accounts offered. |
| Global backing: Built on Santander, with about 171 million customers worldwide. | No mobile check deposit: Funding relies on electronic transfers. |
| FDIC insured: Coverage up to $250,000 per depositor through Santander Bank, N.A. | New U.S. presence: Launched stateside in October 2024, so the domestic track record is short. |
Is Openbank Legit?
Yes. Openbank is a legitimate online bank operating as a division of Santander Bank, N.A., a member of the FDIC. Deposits are insured up to $250,000 per depositor for each ownership category. Deposits at Santander Bank and its Openbank division are combined for FDIC purposes and are not separately insured (FDIC Cert #29950).
Santander Bank, N.A. is a wholly owned subsidiary of Banco Santander, S.A. (NYSE: SAN). Openbank launched in the U.S. in October 2024 and expanded nationwide in April 2025, and the bank reports serving more than 100,000 U.S. customers.
Openbank BBB Rating and Accreditation
Openbank does not maintain a standalone BBB profile; its BBB listing rolls up to its parent, Santander Bank, which holds an A+ rating and is not BBB accredited. Because the rating and customer reviews on that profile reflect Santander’s broader U.S. banking operations rather than the Openbank savings product specifically, they are best read as a signal about the parent organization. Some recent customer reviews on the parent profile cite friction during account opening and funding holds, which prospective savers may want to weigh.
Openbank Cost: What You Should Expect to Pay
The Openbank High Yield Savings account has no monthly maintenance fee and no transaction fees, so the recurring cost of holding it is zero. The main upfront requirement is the $500 minimum opening deposit, which is a funding amount rather than a fee.
The practical cost to consider is the opening minimum relative to competitors. Several online savings accounts require no opening deposit at all, so the $500 threshold is a meaningful difference for savers starting small. Against the FDIC national average savings rate of 0.38% as of May 18, 2026, Openbank’s 3.80% APY on all balances represents a substantial yield advantage once the account is funded.
Final Verdict: Openbank Review
Openbank by Santander earns a BestGuide Expert Score of 4.5/5.0. Its single high-yield savings account pairs a competitive 3.80% APY on all balances and no monthly fees with the backing of one of the world’s largest banks. The trade-offs are a higher-than-average $500 opening minimum, a one-product lineup with no checking or CDs, no mobile check deposit, and a short U.S. track record. For savers whose main goal is a strong, fee-free rate from a globally established institution, Openbank reviews well, and that focus is reflected in its Expert Score.
A strong 3.80% APY on all balances, fee-free, backed by Santander’s global scale.
Frequently Asked Questions About Openbank
What do experts say about Openbank?
BestGuide’s analyst panel scores Openbank 4.5/5.0, rating it strongest on APY competitiveness and fee transparency. The recurring observation is that a 3.80% APY on all balances with no monthly fees is offset by a single-product lineup and a $500 opening minimum.
Is Openbank worth it in 2026?
It is worth it for savers who want a competitive, fee-free rate on all balances and can meet the $500 opening deposit. Savers who need checking, CDs, or mobile check deposit will find the one-product lineup limiting.
How does Openbank compare to other high-yield savings companies?
Openbank’s 3.80% APY applies to every balance with no tiers, which compares favorably to tiered accounts. Its $500 opening minimum is higher than competitors that require no opening deposit, and it offers fewer account types than full-service online banks.
Is Openbank FDIC insured?
Yes. Openbank is a division of Santander Bank, N.A., an FDIC member, so deposits are insured up to $250,000 per depositor per ownership category. Balances at Santander Bank and Openbank are combined toward that limit.
What is the minimum deposit for Openbank?
The High Yield Savings account requires a $500 minimum opening deposit. There is no ongoing minimum balance required to keep the account or earn the 3.80% APY.