A CD rate is the interest percentage a bank or credit union pays you for locking your money away for a set period

When you open a certificate of deposit (CD), you agree to leave a sum of money untouched until a specific date—called the maturity date. In exchange, the bank pays you interest at a rate it promises upfront. That rate is your CD rate, and it's fixed for the entire term. If you have $5,000 in a CD earning 4.5% annually for one year, you'll earn roughly $225 in interest (the exact amount depends on how the bank calculates daily or monthly compounding).

The key difference between a CD rate and a savings account rate is predictability. A savings account rate can change whenever the bank decides. A CD rate stays the same from the day you open it until maturity, no matter what happens in the broader economy. You know exactly how much you'll have when the term ends—assuming you don't withdraw early.

Key Takeaways

  • CD rates are fixed percentages that banks promise to pay you for the entire term, ranging from a few months to five years or longer.
  • Banks set CD rates based on the Federal Reserve's benchmark rate, current market conditions, and how much competition they face from other banks.
  • Longer CD terms typically offer higher rates than shorter ones, though this relationship sometimes reverses during economic uncertainty.
  • Your actual earnings depend on the rate, the principal amount, the term length, and whether interest compounds daily, monthly, or at another interval.

How banks decide what CD rate to offer

Banks don't set CD rates in isolation. The Federal Reserve sets a benchmark interest rate—currently a range rather than a single number—that influences what banks charge borrowers and pay savers. When the Fed raises its rate, banks typically raise CD rates within weeks. When the Fed cuts rates, CD rates fall.

Beyond the Fed's rate, banks also look at what competitors are offering. If one bank advertises a 5.0% one-year CD and another is offering 3.8%, savers will move their money. Banks balance the need to attract deposits with the need to stay profitable. A bank that pays too much on CDs may not earn enough from lending to cover its costs. A bank that pays too little loses customers to competitors.

The bank's own funding needs matter too. If a bank has plenty of deposits and doesn't need more cash right now, it may offer lower CD rates. If it needs to grow its deposit base quickly, it may raise rates to pull in money.

Why CD rates vary by term length

A three-month CD almost always pays less than a one-year CD, which pays less than a five-year CD. This pattern exists because locking money away for longer carries more risk for you—inflation could rise, or you might need the cash and face an early withdrawal penalty. Banks compensate you for that risk by paying more.

The difference between short and long terms can be substantial. During periods when the Fed is raising rates, a six-month CD might pay 4.0% while a five-year CD pays 4.5% or higher. During periods of economic uncertainty, the pattern sometimes flips: short-term rates rise above long-term rates because banks and investors expect the Fed to cut rates soon.

How your actual earnings are calculated

The rate itself is only part of the picture. Your total interest depends on four things: the rate, your principal (the amount you deposit), the term length, and the compounding method.

Compounding means the bank adds earned interest back into your account, and then pays interest on that interest. A CD compounding daily will earn slightly more than one compounding monthly, all else equal. Most banks compound daily or monthly. Some compound quarterly or annually—ask before you open an account if the rate seems high but the compounding period is long.

You can estimate your earnings with a simple formula: Principal × Rate × Time = Interest (for annual compounding). For a $10,000 CD at 4.5% for one year, that's $10,000 × 0.045 × 1 = $450. If the bank compounds daily, you'll earn slightly more. If you withdraw early, you'll earn less because you forfeit some or all of the interest as a penalty.

The relationship between CD rates and economic conditions

CD rates move with the broader economy. When inflation is high, the Fed raises its benchmark rate to cool spending, and CD rates rise. When the economy slows and unemployment climbs, the Fed cuts rates, and CD rates fall. This happened dramatically in 2020 when the Fed cut rates to near zero during the pandemic; CD rates dropped to 0.1% or lower at many banks.

The reverse occurred in 2022 and 2023. The Fed raised rates aggressively to fight inflation, and CD rates climbed to levels not seen in years—some banks offered 5.0% or higher on one-year CDs. Savers who had been earning 0.05% suddenly had a chance to earn 5.0%, but only if they locked the money away and didn't touch it.

Where to find current CD rates

CD rates vary widely between banks. A large national bank might offer 4.0% on a one-year CD while an online bank offers 4.8% for the same term. Credit unions sometimes offer competitive rates too, especially if you're a member.

You can compare rates on financial websites that aggregate current offerings—many update daily. When you find a rate you like, check the bank's reputation and whether deposits are insured by the FDIC (for banks) or NCUA (for credit unions). FDIC and NCUA insurance protects up to $250,000 per account type per institution if the bank fails.

What happens when your CD matures

On the maturity date, your CD stops earning interest. The bank will either automatically renew it into a new CD at the current rate (which may be higher or lower) or move the money to a savings account. Check your CD's terms to see what your bank does by default. Most banks give you a grace period—usually 7 to 10 days—to decide whether to renew, withdraw, or move the money elsewhere.

If you withdraw before maturity, you'll pay an early withdrawal penalty. The penalty amount varies: some banks charge a flat fee, others charge a certain number of months' worth of interest. A $10,000 CD earning $450 annually might have a penalty of $100 to $225 if you withdraw early. Always read the penalty terms before you open the account.

Frequently Asked Questions

Do CD rates change after I open the account?

No. Your rate is locked in for the entire term. If you open a one-year CD at 4.5%, you'll earn 4.5% even if rates rise to 5.0% the next month or fall to 3.0%. That's the trade-off: you get certainty, but you can't benefit if rates go up.

Is a higher CD rate always better?

Not necessarily. A bank offering 5.2% might have a longer term or a higher early withdrawal penalty than one offering 5.0%. Compare the full terms, not just the rate. Also check whether the bank is FDIC-insured and has a solid reputation.

What's the difference between a CD rate and APY?

APY (annual percentage yield) includes the effect of compounding, while the rate alone does not. A CD with a 4.5% rate compounded daily will have an APY slightly higher than 4.5%. Banks must disclose APY, so use that number when comparing CDs.

Can I move my CD to another bank before it matures?

Technically yes, but you'll pay the early withdrawal penalty. If the penalty is steep and rates have risen significantly, it might still be worth it. Calculate whether the higher rate on a new CD will make up for the penalty over the remaining time.

Why would I choose a CD over a savings account if rates are similar?

A CD locks in a rate, so you know exactly what you'll earn. A savings account rate can drop at any time. If you don't need the money for a set period and want to protect yourself from falling rates, a CD is the safer choice.