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Savings Accounts, CDs, and Money Market Funds

The main places to keep money you'll need soon, which ones are insured, and the tradeoffs between access, rate, and safety.

Lesson 5 of 7 · 5 min read · Beginner · Members · Last reviewed September 2026

The short version

Money you'll need soon belongs somewhere safe and accessible. Bank savings accounts and money market deposit accounts are insured by the FDIC up to legal limits. CDs pay a set rate for a fixed term but usually charge a penalty for early withdrawal. Money market funds are investments, not bank deposits: they aim to be stable and are rarely troubled, but they aren't FDIC-insured and can lose money. Treasury bills are another short-term option. The names are similar, so check what you actually own.

By the end of this lesson, you'll be able to

  • Compare savings accounts, CDs, money market deposit accounts, money market funds, and Treasury bills
  • Explain which are FDIC-insured and which are not
  • Match a short-term need to a suitable option

Why this matters

Are You Ready to Invest? and Time Horizon and Risk Tolerance both came to the same conclusion: money you'll need within a few years, and your emergency fund, belong somewhere their value won't fall. There are several such places, with confusingly similar names, and an important difference between them: whether your money is insured.

Bank accounts: savings and money market deposit accounts

Savings accounts at FDIC-insured banks pay interest and let you withdraw at any time. Deposits are insured to at least $250,000 at each FDIC-insured bank.1 Rates vary a lot between banks and can change at any time.

A is also a bank account, often paying a rate tied to short-term market rates. It's insured by the FDIC up to the legal limits, just like a savings account.2

Certificates of deposit

A pays a set interest rate for a fixed term, such as six months or five years. A CD bought from a federally insured bank is insured up to $250,000. If you take your money out before the CD matures, you may have to pay an early withdrawal penalty or give up some of the interest you've earned.3

Some CDs are sold through brokerage firms. These brokered CDs generally don't have the same early withdrawal penalties, but if you sell one before maturity in the secondary market, its price may have changed and you can lose some of your original investment. Insurance limits also apply to your total deposits at the issuing bank, so brokered CDs can push you over the limit without your noticing.4

Money market funds

A is a type of mutual fund that invests in very short-term, high-quality debt. It aims to keep a stable value and pay interest-like income, and brokerage accounts often use one to hold uninvested cash.

It's an investment, not a bank deposit. Money in a money market fund isn't guaranteed by the FDIC, and you could lose some or all of it. Money market funds very rarely "break the buck," meaning fall below their stable value, but it has happened.2

The rest of this lesson is for members

Still to come in this lesson: Treasury bills, the key takeaways, and 2 quiz questions with explanations.

Membership opens every lesson in the curriculum, the capstone projects, the interactive tools, and the members-only channels in the Hyperion Entities Discord. The first lesson of every module stays free.

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Notes and sources

  1. Federal Deposit Insurance Corporation (FDIC). Deposit Insurance. Checked 2026-10-14. Back to text
  2. Investor.gov, U.S. Securities and Exchange Commission. Money Market Funds: Investor Bulletin. Checked 2026-09-30. Back to text
  3. Investor.gov, U.S. Securities and Exchange Commission. Certificates of Deposit (CDs). Checked 2026-09-30. Back to text
  4. Investor.gov, U.S. Securities and Exchange Commission. Brokered CDs: Investor Bulletin. Checked 2026-09-30. Back to text
  5. TreasuryDirect, U.S. Department of the Treasury. Treasury Bills. Checked 2026-10-12.