Money market funds pay interest daily, but the timing and frequency of deposits to your account depend on your fund company and your account setup
Money market funds calculate interest every single day based on the current balance and the fund's yield. That daily accrual is real — your share price grows each day. However, the money does not automatically land in your account on a daily basis. Most funds distribute interest monthly, quarterly, or annually, depending on the fund's policy and what you choose. Some funds let you reinvest the interest automatically (buying more shares), while others deposit it as cash you can withdraw or spend.
The gap between when interest accrues and when you receive it matters if you are watching your balance closely or planning to move money. A fund might accrue interest every day in July but not pay it out until August 1st. If you withdraw your money on July 25th, you forfeit the accrued interest from July 25th onward — the exact rules depend on the fund's prospectus and your fund company's terms.
Key Takeaways
- Money market funds calculate interest daily based on your balance and the fund's current yield, but most distribute that interest monthly, quarterly, or annually.
- You can choose to reinvest distributions automatically (buying more shares) or receive them as cash deposits to your linked bank account.
- If you withdraw money before a distribution date, you lose accrued interest from the withdrawal date forward, so timing matters if you need the cash soon.
- The fund's prospectus and your account settings control the distribution schedule; contacting your fund company or checking your account dashboard will show you the exact dates.
How daily accrual works and why it matters
Every business day, the fund's managers calculate the interest earned on the total assets in the fund. That interest is divided by the number of shares outstanding, and each share's value increases slightly. You own a fixed number of shares, so your account balance grows each day without you doing anything. This is different from a savings account, where interest is often calculated monthly or quarterly.
The daily accrual is may provide by the fund's structure — it is not a promise that can be broken. However, the actual yield (the percentage you earn) fluctuates. Money market funds hold short-term debt instruments like Treasury bills, commercial paper, and certificates of deposit. When interest rates rise, new purchases in the fund pay higher rates, and the fund's yield climbs. When rates fall, the yield falls. Your daily accrual reflects the current yield, which can change week to week.
Distribution schedules: monthly, quarterly, and annual options
Most money market funds distribute interest monthly. On a set date each month — often the last business day or the 15th — the fund pays out the accrued interest. Some funds offer quarterly distributions (every three months) or annual distributions (once a year). A few funds let you choose the frequency when you open the account or change it later.
When a distribution is paid, you have two choices. You can reinvest it automatically, which means the cash is used to buy additional shares of the same fund at the current share price. This compounds your returns because next month's interest accrues on a larger balance. Alternatively, you can receive the distribution as cash, which is deposited into a linked bank account or held as cash within your brokerage account. If you choose cash, the distribution stops compounding, but you have immediate access to the money.
Check your fund's prospectus or your account dashboard to see the exact distribution schedule. If you hold the fund through a brokerage like Fidelity, Vanguard, or Charles Schwab, you can usually change your distribution preference in your account settings without selling the fund.
What happens to accrued interest if you sell before a distribution date
If you sell your shares before the fund pays out a distribution, you receive the accrued interest up to the day you sell. The fund calculates your share price on the day of sale and includes all interest earned through that date. You do not lose money — you simply receive the interest as part of your sale proceeds rather than as a separate distribution payment.
However, if you sell partway through a distribution period, you forfeit any interest that would have accrued after your sale date. For example, if a fund distributes monthly on the last business day and you sell on the 20th, you receive interest through the 20th but miss the interest from the 21st through the end of the month. The amount is usually small, but it is worth considering if you are timing a large withdrawal.
How to find your fund's distribution dates and current yield
Your fund company publishes the distribution schedule in the fund's prospectus, a legal document available on their website. Search for the fund's ticker symbol plus "prospectus" (for example, "SPAXX prospectus" for Fidelity's Government Money Market Fund). The prospectus lists the distribution frequency and the typical payment dates.
You can also log into your brokerage account and look at the fund's details page. Most platforms show the distribution frequency, the last distribution date, and the next distribution date. If you hold the fund directly through the fund company (not through a brokerage), call their customer service line or check your account online — they will show you the same information.
The fund's current yield is updated daily and appears on the fund company's website, on financial data sites like Morningstar, and in your brokerage account. The yield shown is usually the seven-day yield, which is a standardized measure of the fund's recent earnings. This is the number to watch if you are comparing money market funds or trying to understand why your interest payment was larger or smaller than you expected.
Reinvestment versus cash: which option builds wealth faster
If you reinvest distributions automatically, your money compounds. Each month's interest is used to buy more shares, and next month's interest accrues on the larger balance. Over years, this difference is meaningful. A fund yielding 5 percent annually will grow faster if distributions are reinvested than if you withdraw them as cash.
However, reinvestment only makes sense if you do not need the cash. If you are using a money market fund as an emergency fund or to hold money for a planned expense, taking distributions as cash is the right choice. You keep the interest accessible and avoid the small tax complications of reinvesting (each reinvestment is a taxable transaction, even though you did not receive cash).
If you are unsure which option you chose, check your account settings or call your fund company. Switching between reinvestment and cash distributions is usually free and takes effect on the next distribution date.
Tax timing and year-end interest payments
Interest from money market funds is taxable income in the year it is distributed to you, not in the year it accrues. If a fund distributes interest on December 31st, that interest counts toward your 2024 taxes even if you do not receive the cash until January 2nd. If a fund distributes on January 15th, that interest counts toward 2025 taxes.
Your fund company will send you a Form 1099-DIV or Form 1099-INT in January showing all distributions paid in the previous year. Keep this form for your tax records. If you reinvest distributions, the reinvested amount is still taxable income — you owe tax on money you did not receive as cash, which is why some investors prefer to take distributions as cash and set the money aside for taxes.
Frequently Asked Questions
Can I get interest paid daily instead of monthly?
No. Money market funds calculate interest daily, but they distribute it on a schedule set by the fund — typically monthly, quarterly, or annually. You cannot change the distribution frequency to daily. However, you can reinvest distributions automatically so the interest compounds, which is the closest equivalent to daily payouts.
What if my money market fund's yield drops — do I lose money?
No. A drop in yield means future interest will be smaller, but your existing balance does not shrink. The share price may fall slightly if rates drop sharply, but money market funds are designed to maintain a stable share price (usually $1.00 per share). Your principal is safe; only the interest rate changes.
Do I have to reinvest distributions, or can I always take cash?
You can choose. Most funds let you switch between reinvestment and cash distributions anytime through your account settings. If you set up reinvestment when you opened the account, you can change it to cash distributions without selling the fund. Contact your fund company or check your online account to make the change.
When should I sell a money market fund to avoid losing interest?
You do not lose interest by selling. You receive all accrued interest through your sale date as part of your proceeds. The only interest you forfeit is what would have accrued after you sell, which is typically a few days' worth and usually a small amount.
How do I know if my distribution was reinvested or paid as cash?
Check your account statement. If distributions are reinvested, you will see a line item showing shares purchased on the distribution date. If distributions are paid as cash, you will see a deposit to your linked bank account or a credit to your cash balance. Your account settings will also show your distribution preference.