Minimum deposits range from zero to $25,000, depending on the bank

Most online banks that offer high yield savings accounts have no minimum deposit requirement at all. You can open an account with $1 and start earning interest when ready. Some banks—particularly those offering the highest rates—do require an opening deposit, but it is usually between $1,000 and $25,000. A few traditional banks still ask for $10,000 or more, though this is becoming less common as online competition increases.

The minimum deposit is separate from the minimum balance you must maintain to keep the account open or to earn the advertised rate. Some banks require you to hold a certain amount to avoid monthly fees; others require a minimum to access their highest rate tier. Read the account terms carefully, because "minimum to open" and "minimum to earn the stated APY" are two different thresholds.

Key Takeaways

  • Most online high yield savings accounts have zero minimum deposit, so you can open with whatever amount you have on hand.
  • Banks that do require a deposit typically ask for $1,000 to $10,000 at opening, not $25,000.
  • The minimum balance needed to earn the advertised APY is often higher than the minimum to open the account.
  • Some banks waive monthly fees only if you maintain a certain balance, even if they had no opening deposit requirement.

Banks with no minimum deposit requirement

Online banks including Marcus by Goldman Sachs, Ally Bank, American Express Personal Savings, and Discover Bank all allow you to open a high yield savings account with $0. You fund the account after opening it, either by transferring money from another bank or by setting up a direct deposit. The account earns interest on whatever balance you hold, from day one.

These banks compete on rate and customer service rather than on deposit size, so they have removed barriers to opening. If you are starting with a small amount—$100, $500, or $1,000—you can still access the same APY as someone depositing $50,000. The interest you earn will be proportional to your balance, but the rate itself does not change based on how much you have.

Banks that require an opening deposit

Some banks do ask for money upfront. Vanguard's high yield savings option requires a $50,000 minimum deposit. Certain credit unions and regional banks may ask for $1,000 to $10,000 to open. A few traditional banks still maintain $10,000 minimums, though they typically offer lower rates than online competitors.

If a bank requires a deposit to open, that amount is usually stated clearly in the account terms or on the product page. Before you transfer money, confirm whether that deposit is also the minimum needed to earn the advertised rate, or whether you can drop below it later without losing the rate or triggering a fee.

The difference between opening minimum and earning-rate minimum

A bank might let you open an account with $0 but require $10,000 to earn the advertised APY. Others might require $1,000 to open but let you earn the full rate on any balance above $1. Some banks tier their rates: you earn one rate on balances under $100,000 and a slightly higher rate on balances above that threshold.

The account terms document will specify this. Look for language like "earn [X] APY on balances of $10,000 or more" or "earn [X] APY on all balances." If the terms are unclear, contact the bank before opening. You do not want to discover after depositing money that you do not may have access to for the rate you thought you were getting.

Monthly fees and minimum balance requirements

Some banks charge a monthly maintenance fee unless you maintain a certain balance—often $500 to $2,500. Others charge a fee if your balance drops below a threshold at any point during the month. A few banks waive fees only if you set up direct deposit or maintain a linked checking account with them.

High yield savings accounts at major online banks typically have no monthly fees regardless of balance, so you will not face a penalty if your account dips below $1,000 or even $100. But if you are considering a bank that does charge fees, factor the fee into your decision. A 4.5% APY on $500 earns $22.50 per year; a $10 monthly fee costs $120 per year, so you lose money.

How to choose based on your deposit amount

If you have less than $1,000, open an account at a bank with no minimum deposit. Marcus, Ally, American Express, and Discover all fit this category. Your interest earnings will be small, but they will be real, and you will not pay fees.

If you have $1,000 to $10,000, you have options. You can use any no-minimum bank, or you can consider banks that require a deposit in that range if their rate is meaningfully higher. Compare the APY difference against any fees or balance requirements. A 0.1% higher rate on $5,000 earns $5 more per year—not worth switching banks for, but worth noting if you are already comparing.

If you have $25,000 or more, you can access any account, including those with high minimums. At this point, focus on the APY and the bank's stability rather than the minimum deposit. The difference between a 4.5% rate and a 4.75% rate on $25,000 is $62.50 per year—enough to justify a few minutes of research.

What happens if your balance falls below the minimum

If you opened an account with no minimum and your balance drops to $0, the account stays open and earns no interest (because there is nothing to earn interest on). You can deposit money again whenever you want.

If a bank requires you to maintain a minimum balance to earn the advertised rate, and your balance falls below that threshold, you will typically earn a lower rate on the full balance until you bring it back up. Some banks explore this penalty only if your balance dips below the minimum at the end of a statement period; others check daily. If a bank charges a fee for falling below the minimum, that fee is usually $5 to $25 per month.

Frequently Asked Questions

Can I open a high yield savings account with $100?

Yes, if you choose a bank with no minimum deposit requirement. Marcus, Ally, American Express, and Discover all allow you to open with any amount. You will earn the full advertised APY on that $100 from day one. If you later deposit more, the rate stays the same.

Do I have to keep a certain amount in the account to keep it open?

No, not at most online banks. You can let your balance drop to $0 and the account remains open. Some traditional banks or credit unions may close accounts that sit inactive or at zero balance for a long period, but this is rare with online banks. Check the account terms if you plan to keep a very low balance long-term.

What if the bank requires a $10,000 minimum but I only have $5,000?

You cannot open that account with $5,000. You would need to either save until you have $10,000, or choose a different bank with a lower or zero minimum. Many banks with no minimum offer competitive rates, so you have alternatives.

Does a higher minimum deposit mean a higher interest rate?

Not necessarily. Some banks with high minimums offer higher rates, but others do not. Compare the APY across banks regardless of their minimum deposit. A bank with a $0 minimum might offer 4.75% APY while a bank with a $25,000 minimum offers 4.5%. The minimum deposit and the interest rate are separate decisions.

If I open with $1,000 and later deposit $50,000, does my rate change?

No. Once you open the account and lock in the rate, additional deposits earn the same APY. Some banks offer tiered rates where very large balances earn slightly more, but this is rare and would be stated in the terms. Your rate does not drop if you add money.