How to choose an online bank
Most of this decision is made by one number, and most articles about it spend their length on the other ones. Here is the short version, in the order that matters.
1. Decide which job the money is doing
Before comparing anything, split the money in two. There is money that moves — rent, bills, groceries, the balance you spend from — and money that waits, which is your buffer and anything saved for later.
These want opposite things. Money that moves wants easy access, wide ATM coverage and no overdraft trap; the interest rate on it is nearly irrelevant because the balance is small and always changing. Money that waits wants the highest rate you can get while staying reachable within a day or two.
Almost every bad outcome here comes from treating those as one decision, then keeping everything in the account that is worse at the job you needed most.
2. For money that waits, the rate is the whole answer
This is the number that decides it. A representative big-bank savings rate is 0.4%, and the largest banks pay well below that. Competitive online accounts pay around 3.9%. Same federal insurance, same access, roughly ten times the interest.
On $10,000 that difference is about $350 a year. It takes one afternoon to claim and you keep it every year afterwards. Very little else in personal finance has that shape, which is why it comes before every other consideration on this page.
A quick way to see where you stand: the balance at which interest pays for one $5.00 coffee a month is $15,000 at a big-bank rate, and $1,538 at a good one. Run your own balance through it.
3. For money that moves, compare the edges
Monthly fees on online checking are effectively gone, so that is not a comparison any more. What still costs real money is at the edges:
- Overdraft policy. The largest charge most people ever meet on a checking account, arriving in the week they can least afford it. An account with no overdraft fee beats one paying token interest.
- ATM reimbursement, not network size. The ATM you need is the one in front of you, so a bank that refunds other banks' charges is worth more than a big network number.
- Cash deposits. If you handle cash, check this before anything else. It is the one thing online-only banks are genuinely bad at.
- Foreign transactions. Only if you travel or earn abroad — in which case see the cross-border comparison, because a normal account is the wrong tool.
4. Check where the insurance actually sits
Some of the best-known names in this category are financial technology companies rather than banks, holding your money at a partner bank that carries the FDIC coverage. That is not disqualifying and it is not a scandal — but it is worth knowing which entity holds your money, because the protection follows the bank and not the app.
5. Ignore almost everything else
Sign-up bonuses are one-off; a rate is every year, so a bonus only wins if you will move again afterwards (the arithmetic is here). Round-up savings features are a nudge, not a return. App design matters only up to the point where you can do what you need without irritation.
None of these are scams. They are just small, and they get the coverage they get because comparison pages need something to differentiate accounts that are largely identical.
The whole method, in four lines
- Split the money into what moves and what waits.
- Put what waits in the best rate you can get that stays reachable.
- Put what moves in a no-fee account with no overdraft fee and decent ATM terms.
- Check the rate once a year. Do nothing else.
Where to go next: savings rates compared, fee-free checking compared, or accounts with no credit check if that is the constraint.
Questions
- Are online banks safe?
- An FDIC-insured online bank carries the same $250,000 protection per depositor, per bank, per ownership category as a branch bank. Check the FDIC certificate rather than the branding — some apps are financial technology companies working with a partner bank, which is where the insurance actually sits.
- Should I move everything to one bank?
- No, and you do not have to choose. Keep spending money where it moves easily and savings where it is paid properly. Two accounts at two institutions is the normal answer, not a complication.
- How often should I switch?
- Rarely. Move once to a genuinely competitive rate, then check annually. Chasing 0.05% costs more in attention than it pays.