The Core Account holds your uninvested cash at Fidelity

The Core Account is Fidelity's default holding place for money you deposit but haven't yet invested in stocks, bonds, mutual funds, or other securities. It functions like a cash management account — your money sits there earning interest while you decide what to do with it, or while you wait between trades. Every Fidelity brokerage account has a Core Account; you don't open it separately.

The Core Account is not a savings account at a bank. It's part of your brokerage account at Fidelity, and the interest rate it pays changes based on market conditions and Fidelity's current offerings. Your cash there is held in a money market fund or similar low-risk investment, which is why it earns interest rather than sitting flat.

When you deposit money into your Fidelity account, it lands in the Core Account first. From there, you can move it into individual stocks, ETFs, mutual funds, or leave it there. If you sell an investment, the proceeds go back into the Core Account until you reinvest or withdraw.

Key Takeaways

  • The Core Account is where cash sits in your Fidelity brokerage account before you invest it or after you sell a position.
  • Money in the Core Account earns interest through a money market fund, though the rate varies and is not may provide.
  • You cannot choose a different default cash location — the Core Account is automatic for all Fidelity brokerage accounts.
  • You can move money out of the Core Account to buy investments, or withdraw it to your bank account, at any time.

How interest accrues on Core Account cash

Fidelity invests Core Account cash in a money market fund on your behalf. The fund holds short-term, low-risk securities like Treasury bills and commercial paper. The interest you earn depends on which money market fund Fidelity uses for your account type and what that fund's current yield is.

Fidelity offers several money market funds with different yield levels. Your account may be assigned to one by default, but you can often request a different one if another offers a higher rate. The rate is not fixed — it moves with market interest rates and the fund's performance. Fidelity publishes current rates on its website, and you can see what your Core Account is earning in your account dashboard.

Interest compounds daily and is credited to your account regularly. You do not have to do anything to earn it — as long as cash sits in the Core Account, it generates interest automatically.

Moving money in and out of the Core Account

Deposits from your bank account land in the Core Account automatically. Transfers typically take one to three business days to settle, depending on your bank and the transfer method you use. Once the money is there, you can invest it immediately or leave it earning interest.

When you sell an investment, the proceeds go into the Core Account. You can then reinvest that money, transfer it to another account, or withdraw it to your bank. Withdrawals from the Core Account to your bank account usually take one to three business days.

You can also move money between the Core Account and your investments without leaving Fidelity. Buying a stock or fund pulls money from the Core Account. Selling an investment deposits the proceeds back into it. These internal transfers settle instantly.

Core Account versus other cash options at Fidelity

Fidelity also offers a Cash Management Account, which is a separate product designed specifically for cash storage and bill pay. It functions more like a bank account — you get a debit card, check-writing, and FDIC insurance up to $250,000. The Core Account does not offer these features.

If you want your cash to earn interest while you hold it in a brokerage account, the Core Account is your only option — you cannot opt out of it. If you want banking features alongside investing, a Cash Management Account is a separate product you can open.

Some investors use both: a Cash Management Account for everyday spending and emergency funds, and the Core Account in their brokerage account for cash they plan to invest soon.

Fees and minimums for the Core Account

There is no minimum balance required to hold money in the Core Account, and Fidelity does not charge a fee for having cash there. You pay no maintenance fee, no inactivity fee, and no fee to move money in or out.

The only cost is the difference between the interest rate the money market fund earns and the rate you receive — Fidelity takes a small cut as the fund manager. This is standard practice across the industry and is already reflected in the yield Fidelity publishes.

What happens to the Core Account if you don't use it

If you deposit money and never invest it, it simply stays in the Core Account earning interest. There is no time limit on how long cash can sit there, and no penalty for leaving it untouched. Some investors use the Core Account as a holding area for money they plan to invest over time.

If your Fidelity account becomes inactive — meaning you make no trades and no deposits for an extended period — Fidelity may charge an inactivity fee on some account types. However, this is rare and typically only applies to accounts with very low balances. Check your account agreement or contact Fidelity directly if you are concerned about inactivity fees.

Frequently Asked Questions

Can I choose a different money market fund for my Core Account?

Yes. Fidelity assigns a default money market fund based on your account type, but you can request to switch to a different one if another offers a higher yield. Log into your account or call Fidelity to see which funds are available and make the change.

Is money in the Core Account FDIC insured?

No. The Core Account holds investments in a money market fund, not bank deposits, so FDIC insurance does not apply. If you want FDIC protection, you would need to open Fidelity's Cash Management Account instead, which offers FDIC insurance up to $250,000.

What happens to my Core Account if I close my Fidelity account?

Before you close your account, you must withdraw or transfer all cash from the Core Account. Fidelity will not close your account until the balance is zero. You can transfer the money to your bank or move it to another brokerage account.

Does the Core Account interest rate change?

Yes. The rate changes based on the money market fund's performance and current market conditions. Fidelity updates rates regularly, and you can check your current rate in your account dashboard or on Fidelity's website.

Can I use the Core Account to pay bills or make purchases?

No. The Core Account is for holding cash within your brokerage account only. You cannot write checks from it or use a debit card. If you need bill-pay and spending features, Fidelity's Cash Management Account offers those.