Most HYSAs pay interest monthly, but some compound and credit it daily
A high-yield savings account (HYSA) typically credits interest to your account once a month. The bank calculates what you've earned based on your daily balance, then deposits that amount on a set date—usually the last day of the month or the first few days of the next month. The exact date varies by bank and is listed in your account agreement.
The frequency of payment matters less than the compounding frequency. Even if interest posts monthly, the bank may calculate it daily. Daily compounding means each day's interest gets added to your balance, and the next day's interest is calculated on that larger amount. This compounds your growth faster than monthly compounding would, even though you only see one deposit per month in your account.
A few banks offer weekly or bi-weekly interest deposits, but this is rare. Most online banks—Ally, Marcus, Wealthfront, American Express Personal Savings—stick to monthly crediting. Credit unions and some regional banks may differ, so check your account terms if the timing matters to your budget.
Key Takeaways
- Most HYSAs credit interest once per month, usually at the end of the month or start of the next one.
- Daily compounding means interest is calculated every day and added to your balance, even if it only posts once monthly.
- The exact posting date is in your account agreement and may vary slightly from month to month.
- Interest begins accruing the moment you deposit money, regardless of when it posts to your account.
- Some banks offer weekly or bi-weekly posting, but monthly is the industry standard for online HYSAs.
When the interest actually hits your account
The date interest posts is not the same as the date it starts earning. Interest accrues daily from the moment your money lands in the account. The bank just waits until the end of the month to bundle it all together and add it as a single deposit.
If you deposit $10,000 on the 15th of the month and the account earns 4.50% APY, you start earning that day. By the end of the month, you'll have roughly $37.50 in accrued interest (the exact amount depends on how many days are left in the month). On the posting date—say, the 1st of the next month—that $37.50 appears in your account as a single credit.
Some banks post on the last business day of the month; others post on the first or second day of the following month. A few post on the 15th. Check your most recent statement or account settings to see your bank's pattern. The posting date rarely changes, so once you know it, you can predict when to expect your interest payment.
How daily compounding works with monthly posting
Daily compounding and monthly posting work together. Here's the sequence: each day, the bank calculates interest on your current balance. That interest is not paid out immediately—it's held and added to your balance for the next day's calculation. This repeats every day of the month. At the end of the month, all that accumulated interest posts as a single deposit.
The benefit is that your balance grows slightly each day, so later-month interest is calculated on a slightly larger amount than early-month interest. Over a year, this compounds into noticeably more money than if the bank only calculated interest once at month's end.
For example, with $10,000 at 4.50% APY and daily compounding, you earn about $37.50 in the first month. In month two, you're earning interest on $10,037.50, so you earn slightly more. By month twelve, the compounding effect has added roughly $23 more than simple monthly calculation would have.
What to do if interest doesn't post on the expected date
If your bank's usual posting date passes and no interest appears, check your account settings first. Some banks let you choose a posting date within a range, and the setting may have been changed accidentally. Log into your online banking portal and look for "interest posting date" or "dividend posting date" in account settings.
If the date hasn't changed, contact the bank's customer service. Interest posting delays are rare but do happen—system errors, bank holidays, or processing backups can cause a one- or two-day slip. The bank will either post the interest within a few days or explain why the posting was delayed. You are may have access to to the interest you've earned, so keep records of your daily balance and the APY rate so you can calculate what you should have received if needed.
Comparing posting frequency across banks
Most major online banks follow the same pattern: monthly posting with daily compounding. The table below shows the standard practice at several large institutions.
| Bank | Posting Frequency | Compounding |
|---|---|---|
| Ally Bank | Monthly (last day) | Daily |
| Marcus by Goldman Sachs | Monthly (last day) | Daily |
| American Express Personal Savings | Monthly (last day) | Daily |
| Wealthfront Cash Account | Monthly (last day) | Daily |
| Vanguard Cash Management | Monthly (last day) | Daily |
| Most credit unions | Quarterly or monthly | Varies |
The differences in posting frequency are small enough that they shouldn't drive your choice of bank. A one-month delay in seeing interest posted doesn't change how much you earn—it only changes when you see it. What matters far more is the APY rate itself. A 0.25% difference in rate will cost or earn you far more over a year than a difference in posting frequency.
Interest posting and tax reporting
The IRS counts interest as income in the year it is credited to your account, not the year it accrues. If your bank posts interest on December 31st, that counts as 2024 income. If it posts on January 1st, it counts as 2025 income. This matters when you're close to a tax bracket line or tracking income for other reasons.
Your bank will send you a 1099-INT form in January showing all interest posted during the previous calendar year. The amount on that form is what you report to the IRS. Keep your monthly statements as backup records, especially if you're tracking interest across multiple accounts or if you close an account mid-year.
Frequently Asked Questions
Can I withdraw my interest before it posts?
No. Interest that has accrued but not yet posted is not available to withdraw. Once it posts to your account, it becomes part of your balance and you can withdraw it like any other money. Most banks post monthly, so you typically wait until the end of the month to access that month's earnings.
Does the APY change if interest posts less often?
No. The APY (annual percentage yield) is the same regardless of posting frequency. It already accounts for compounding. A bank posting monthly at 4.50% APY will earn you the same amount over a year as a bank posting weekly at 4.50% APY, assuming the same balance.
What if my bank posts interest on a weekend or holiday?
Most banks post on business days only. If the scheduled posting date falls on a weekend or federal holiday, the bank typically posts the next business day. Check your account agreement or call customer service to confirm your bank's policy.
Do I have to do anything to receive the interest payment?
No. Interest posts automatically if your account is open and in good standing. You don't need to take any action. The bank calculates and deposits it on the scheduled date without requiring you to do anything.
Is monthly interest posting better or worse than daily?
Monthly posting is standard and works fine. What matters is daily compounding, which most banks do regardless of posting frequency. Daily compounding means your interest earns interest, which is what builds wealth over time. The posting date is just when you see the money—it doesn't affect how much you earn.