Most savings accounts pay interest monthly, but the amount depends on your bank and the rate they offer
Interest on a savings account is usually credited to your account once a month, on a date your bank sets. Some banks pay on the first of the month; others pay on the last business day or on your account anniversary. The exact timing varies by institution, so check your account agreement or call your bank to find out when your interest posts.
The amount you earn each month is small—often a few cents or dollars—because savings account rates are low compared to other accounts. A $10,000 balance at 4.5% annual interest earns roughly $37.50 per month, but that figure changes if rates drop or if your balance changes. The bank calculates interest daily based on your balance, then deposits the total once a month.
Interest is taxable income. Your bank will send you a 1099-INT form at the end of the year if you earned $10 or more in interest, and you'll report that on your tax return. Even small amounts count toward your total income for tax purposes.
Key Takeaways
- Monthly interest deposits happen on a date set by your bank, usually the first or last business day of the month.
- The amount you earn each month is calculated daily based on your account balance and the interest rate your bank offers.
- Interest rates vary widely between banks—online banks typically offer higher rates than brick-and-mortar branches.
- You will receive a 1099-INT tax form if your annual interest earnings reach $10, and you must report this income on your tax return.
How banks calculate the interest you earn each month
Banks use your daily balance to calculate interest. If you have $5,000 in the account on day one and deposit $2,000 on day 15, the bank counts both balances when figuring out what you've earned. The formula is: (daily balance × annual interest rate) ÷ 365 days. The bank does this for every day of the month, adds them up, and deposits the total once monthly.
This means your interest compounds—you earn interest on the interest from the previous month. If your account earns $5 in January and that $5 stays in the account, you'll earn interest on $5 plus your original balance in February. Over time, this compounds, though the effect is small with savings account rates.
The date your interest posts does not affect how much you earn. Whether your bank pays on the 1st or the 28th, you still earn the same amount for the full month. The posting date only determines when you see the money in your account.
Why interest amounts vary between banks
Banks set their own interest rates based on what the Federal Reserve does and what competitors offer. Online banks typically pay higher rates than traditional banks because they have lower overhead costs. A brick-and-mortar bank might offer 0.01% annual interest, while an online bank offers 4.5% on the same type of account.
Rates change frequently—sometimes weekly. If your bank lowers its rate, you'll earn less each month going forward. If rates rise and your bank doesn't increase what it pays, you're earning less than you could elsewhere. This is why it's worth checking other banks' rates every few months, especially if you have a large balance.
Some banks offer promotional rates for new customers—a higher rate for the first few months, then a drop to the standard rate. Read the fine print to see when the promotional period ends and what rate you'll earn after that.
What happens if you withdraw money before interest posts
If you withdraw money before your monthly interest deposits, you lose the interest you would have earned on that amount. The bank calculates interest on your daily balance, so removing funds reduces what you earn. For example, if you withdraw $1,000 on the 20th of a 30-day month, you lose interest on that $1,000 for the last 10 days.
You do not lose interest you've already earned in previous months. Once interest posts to your account, it's yours—withdrawing it later doesn't reverse the deposit. The loss only applies to interest you haven't yet earned.
How to track your interest earnings
Your bank statement shows each monthly interest deposit as a separate line item. Online banking platforms usually label it "Interest Paid" or "Interest Earned." You can also log into your account and check the transaction history to see exactly when interest posted and how much.
Keep records of your interest deposits for tax purposes. If you earn $10 or more in a calendar year, your bank sends a 1099-INT form in January. The form shows your total interest for the year. If you earn less than $10, the bank doesn't send a form, but you still owe tax on the interest—you just report it yourself on your return.
Some people set up alerts when interest posts so they can verify the amount is correct. If you notice the deposit is much lower than expected, contact your bank to confirm the rate hasn't changed or that there's no error in the calculation.
Moving money to earn more interest
If your current bank pays very low interest, moving your savings to a bank that pays more can significantly increase what you earn. The difference between 0.01% and 4.5% is substantial. On a $50,000 balance, that's roughly $225 per year at the low rate versus $2,250 at the higher rate.
Opening a new account at a different bank takes a few days. You can transfer your balance electronically, or withdraw cash and deposit it at the new bank. There's no penalty for moving money between banks—savings accounts have no early withdrawal fees or lock-in periods.
Some people keep accounts at multiple banks to take advantage of different rates or features. One account might offer the highest interest rate, while another offers a debit card or easier access to cash. There's no rule against having savings accounts at several institutions.
Frequently Asked Questions
Can I get interest paid more than once a month?
No. Savings accounts pay interest monthly by standard practice. Some accounts like money market accounts may offer different terms, but traditional savings accounts deposit interest once per month on a date the bank sets.
What if my bank doesn't show an interest deposit one month?
Check whether your balance fell below any minimum requirement—some accounts only pay interest if you maintain a certain balance. If your balance was sufficient, contact your bank to ask why interest didn't post. It's rare, but errors do happen.
Do I have to pay taxes on savings account interest?
Yes. Interest is taxable income. If you earn $10 or more in a calendar year, your bank sends a 1099-INT form. You report this on your tax return. Even amounts under $10 are technically taxable, though the bank doesn't report them.
Does moving my money between accounts affect my interest?
Moving money within the same bank to a different account may change your interest rate if the new account has a different rate. Transferring to a different bank entirely means you'll earn whatever rate that bank offers. Interest accrues based on your daily balance in each account.
Why is my interest so low compared to what the bank advertises?
The advertised rate is usually an annual percentage yield (APY). Your monthly deposit is one-twelfth of that annual amount. If the rate is 4.8% APY, you earn roughly 0.4% per month. Also confirm your balance qualifies for the advertised rate—some banks offer higher rates only on balances above a certain threshold.