The minimum balance depends on the bank, not on any rule
There is no government requirement for how much money you need in a savings account. The amount is set by each bank or credit union, and it varies widely — some accounts have no minimum at all, while others require $25, $100, $500, or more to open.
The minimum you need to open an account is different from the minimum you need to keep it open. A bank might let you open with $1 but charge a monthly fee if your balance drops below $500. Others have no opening minimum and no balance minimum. The only way to know what a specific bank requires is to ask them directly or read their account agreement.
Your job is to find an account with a minimum that fits your situation. If you have $50 to start with, you need a bank that accepts that. If you have $5,000, you have more options but should still compare what each bank offers.
Key Takeaways
- Banks set their own minimum balance requirements — there is no federal rule about how much you must have.
- The minimum to open an account and the minimum to avoid fees are often two different numbers.
- Many banks and credit unions have no minimum balance requirement at all, especially online banks.
- If you cannot meet a bank's minimum, you can find another bank instead of paying a monthly fee.
- Your savings account minimum should never be a reason to keep money in a checking account or under your mattress.
Why banks set minimums in the first place
A bank sets a minimum balance requirement because they make money from the money you deposit. When you put $500 in a savings account, the bank lends that money to other customers as mortgages, car loans, or business loans, and keeps the difference between what they pay you in interest and what they charge borrowers. A very small account costs the bank more to maintain than it earns them.
Online banks often have no minimum because their costs are lower — they do not pay for physical branches or as many employees. A bank with 100 branches in your state has higher overhead than a bank with no branches at all, so they are more likely to require a minimum balance to make the math work.
This is not about punishing you. It is about the bank's business model. Understanding this helps you see that a $25 minimum at one bank and a $0 minimum at another are both honest offers — they just serve different customers.
Opening an account with very little money
If you have less than $100, you have real options. Online banks like Ally, Marcus, and Discover have no minimum balance to open or maintain a savings account. Credit unions often have lower minimums than traditional banks — many require only $5 or $25 to open. Some credit unions have no minimum at all.
The tradeoff is usually interest rate. A bank with no minimum might pay slightly less interest than a bank that requires $10,000. The difference is usually small — perhaps 0.01% less per year — but it is worth checking. A savings account that pays 4.5% interest with no minimum is better than one that pays 4.75% but charges you $12 a month in fees because you cannot meet the minimum.
Start by calling or visiting the websites of banks and credit unions in your area, plus one or two online banks. Write down the opening minimum, the balance minimum to avoid fees, and the interest rate. Then pick the one that fits your situation.
What happens if your balance drops below the minimum
If you fall below the minimum balance, the bank will not close your account or take your money. Instead, they will charge you a monthly maintenance fee — usually $5 to $15 — until your balance goes back up. Some banks waive the fee if you set up direct deposit or use their debit card a certain number of times per month.
This is where the math matters. If a bank requires $500 to avoid a $10 monthly fee, and you only have $200, you will pay $120 a year in fees. That is money leaving your account that could have stayed and earned interest. In that case, switching to a bank with no minimum makes sense.
A few banks will close your account if the balance stays below the minimum for a long time — usually 60 to 90 days — but they will send you a notice first. You will have time to either deposit more money or move your account elsewhere.
How much you should actually try to keep in savings
The minimum balance requirement is a bank rule. How much you should actually save is a separate question about your own finances. Financial advisors often suggest keeping three to six months of living expenses in a savings account for emergencies — but that is a goal, not a requirement, and it looks different for everyone.
If your monthly expenses are $1,500, three months of expenses is $4,500. If your monthly expenses are $3,000, it is $9,000. If you have no expenses yet because you are just starting out, even $500 in savings is a real cushion. There is no single right number. The point is to have something set aside that you do not touch for everyday spending.
Start with whatever you can. If you can save $20 a month, that is $240 a year. If you can save $50 a month, that is $600 a year. The minimum balance requirement should never stop you from opening an account and starting to save.
Comparing accounts when minimums are similar
If two banks both have a $100 minimum, or both have no minimum, look at other things: the interest rate they pay, whether they charge a monthly fee, how straightforward it is to move money in and out, and whether they offer tools like automatic transfers that help you save without thinking about it.
A bank with a $0 minimum and 4.5% interest is better than a bank with a $100 minimum and 3.5% interest. A bank that lets you open online in 10 minutes is better than one that requires you to visit a branch. A bank that lets you transfer money to other banks for free is better than one that charges $3 per transfer.
The minimum balance is one piece of the puzzle, but it is not the only piece. Read the account agreement or call and ask questions. Most banks are happy to explain their requirements because they want your business.
Moving your money if the minimum does not fit
If you open an account at a bank with a high minimum and later realize you cannot keep that balance, you can move your money to a different bank. This is free and takes a few days. You do not lose your money, and you do not owe the first bank anything except to close the account.
The easiest way to move money is to ask your new bank to do it for you. Most banks offer a service where they contact your old bank, pull your balance, and deposit it in your new account. You just fill out a form. It usually takes three to five business days.
If you want to move quickly, you can withdraw the money yourself and deposit it at the new bank. If the amount is large, ask the bank how they prefer you to deposit it — some want a cashier's check, others accept mobile check deposit, and some want you to come in person.
Frequently Asked Questions
Can I open a savings account with $0 and add money later?
Some banks and credit unions allow it, but most require at least $1 to $25 at the time you open the account. Online banks are more likely to have no opening minimum. Call ahead or check the website before you go in, so you know whether to bring money with you.
Will the bank close my account if I do not use it?
Banks can close inactive accounts, but they usually give you notice first. An account is typically considered inactive after 12 months with no deposits or withdrawals. If you want to keep an account open but are not using it, make a small deposit or transfer once a year to show activity.
Does a higher minimum mean the bank is safer?
No. Safety depends on whether the bank is insured by the FDIC (Federal Deposit Insurance Corporation) or the NCUA (National Credit Union Administration), not on how much money they require you to keep. Both large banks and small banks can be FDIC-insured. Check the bank's website or call to confirm they are insured.
What if I have a lot of money — does a high minimum account pay more interest?
Not always. Some banks offer higher interest rates to accounts with larger balances, but many do not. A $50,000 balance at one bank might earn the same interest rate as a $1,000 balance. Compare the rates directly instead of assuming a higher minimum means higher interest.
Can I use a savings account minimum to build credit?
No. Savings accounts do not report to credit bureaus, so the balance you keep has no effect on your credit score. A checking account does not either. Credit comes from loans, credit cards, and payment history — not from savings.