How Much Money Should You Keep in a CD?

Finding the balance between saving for the long-term future and short-term goals

If you're looking for a safe place to grow your savings, a certificate of deposit (CD) can be a smart option. CDs typically earn more interest than traditional savings accounts and are lower risk than many other types of investments.

But they shouldn't be your only investment. Deciding how much to invest in CDs requires careful planning that balances liquidity needs, risk tolerance and long-term growth potential.

1. Understand the CD Basics

A certificate of deposit (CD) is a safe place to park your money for a set amount of time. You agree to leave the money alone, and in return, the bank pays you a guaranteed interest rate. When the term ends (the “maturity date"), you get your money back plus the interest you earned.

READ MORE: What Is a Certificate of Deposit (CD) and How Does It Work?

How CDs work

• Interest and term: Most CDs have a fixed interest rate and a set term, like six months, one year or five years. Some have variable rates that can change, but those are less common.
• Penalties for early withdrawal: If you take out your money before the term is up, the bank usually charges a fee or takes back some of the interest. The exceptions are no-penalty CDs, which let you withdraw early without a fee, and bump-up CDs, which let you adjust your rate once during the term.

What are the benefits of CDs?

• They're very low-risk and give you predictable growth.
• They balance out riskier investments in a portfolio.
• They're useful for short- and medium-term goals when you want steady returns without the stock market drama.

2. Assess Your Financial Situation

Before putting money into CDs, look at your financial situation. Think about any major expenses coming up over the next few years, and anything further out that might require flexibility.

A CD works best for goals that are a few years away: money you won't need immediately but also don't want to ride the stock market roller coaster. It can be a great fit for things like:

• A down payment on a home
• Upcoming college tuition
• Retirement funds you'll need in the near term

As you evaluate whether a CD fits, focus on a few key questions:

• Do I need this money soon or can it stay put for a while?
• Do I have a solid emergency fund?
• Are any big expenses coming up that require flexibility?
• What other investment and savings accounts do I already hold?
• How stable is my income and overall financial picture?

If the money can stay untouched and you want a safe, predictable return, a CD can be a smart addition to your plan.

3. Safety vs. Liquidity: Balancing Your CD Investment

CDs are a safe place to keep your money, but that safety comes with a trade-off: low liquidity. In other words, you can't access your money whenever you want. Once your funds are locked into a CD, you typically can't withdraw them without a penalty.

Before deciding how much to put in a CD, make sure you keep enough money available for unexpected expenses and emergencies. Most experts recommend keeping at least three to six months' worth of income in an easily liquid account, like a savings or money market account, before locking away additional funds in CDs.

4. Factors Influencing How Much To Keep in a CD

How much you put into CDs depends on your risk tolerance, how soon you'll need the money and what role CDs play in your overall investment goals.

Before investing, review the fine print so you understand exactly what you're buying. Key factors to consider include:

• Interest rate and type: Is it fixed, variable or linked to a market index?
• Maturity date: How long until you can access your money without penalty?
• Inflation outlook: Compare the CD's interest rate to the current and projected inflation.
• Penalties for withdrawing money early: Check the exact penalty terms. These can vary by bank and CD type.

Even though CDs are safe, putting too much money in them can limit long-term growth. CD returns often trail inflation and taxes over time, which slowly erodes purchasing power. For long-term goals, most experts recommend building a diversified, risk-appropriate portfolio in higher yield investments like stocks and bonds.

If you want a balance of higher returns and regular access to cash, consider building a CD ladder. This strategy spreads your money across CDs with staggered maturity dates, giving you predictable payouts without locking everything up at once (more on that later!).

5. Practical Guidelines for How Much To Put in a CD

You can buy CDs through most banks, but online banks often offer higher interest rates. Credit unions offer similar products called share certificates, and some brokerage firms sell CDs too, though those may come with commission fees. No matter where you buy, make sure the institution is NCUA- or FDIC-insured.

Once you've chosen where to open your CD, the bigger question is how much to put in. While there's no one-size-fits-all formula, some financial experts suggest putting 10% to 30% of your cash savings into CDs. You might want to lean toward the lower end of that range if you want to keep more money in higher yield investments that are better suited to outpacing inflation over time.

Using CD Laddering To Maximize Returns and Flexibility

CD laddering is a strategy that helps you get better returns and keep some access to your money. Instead of putting everything into one CD, you spread your funds across several CDs with different maturity dates.

Here's how it works:

• Your money isn't tied up in one long-term CD.
• By staggering maturity dates—every six months or every year—you get periodic access to part of your savings. When each CD matures, you can use the cash or reinvest it into a new CD with a potentially higher rate.
• The trade-off is that shorter-term CDs usually earn lower rates than longer-term options.

Laddering gives you a balance of safety, flexibility and steady returns, making it a great option for enjoying the benefits of CDs without sacrificing too much liquidity.

Alternatives to CDs for Different Needs

CDs are a safe choice, but they're not the only way to save and grow your money. Depending on your goals and how soon you'll need access to your funds, you might also consider:

• High yield savings accounts: Very liquid, but usually lower returns.
• Money market accounts: Interest-earning deposit accounts that blend features of both savings and checking accounts.
• U.S. Treasury bills: T-bills are short-term, government-backed and flexible. However, returns may not beat inflation over the long term.
• Higher yield stocks or mutual funds: Higher risk but better suited for long-term growth.

READ MORE: Money Market vs. Savings Accounts: Which Is Right for You?

Which to choose?

The right mix of investment accounts depends on your personal goals and timeline. For example:

• High yield savings accounts and money market accounts are best when you need quick access and low risk. For instance, these are a good place to park an emergency fund.
• CDs generally work well for short-term financial goals (between one and five years) where you can lock money away for a set term. Examples: a car purchase, a family vacation, a down payment for a home.
• Stocks, bonds, ETFs and mutual funds are typically better for long-term goals—five years out or more—like building retirement funds.

Most people benefit from a mix: some investments for growth, some for stability and some for quick access. A financial advisor can help tailor the right balance for your goals.

Balancing Your Money for Now and Later

How much to put in CDs comes down to your goals, your timeline and how much flexibility you need. CDs are a low-risk way to earn steady returns and protect part of your money from market swings, but they work best as one piece of your overall plan.

Keep enough liquid savings for emergencies, let CDs handle your short-term stability and rely on longer-term investments for real growth. The goal isn't to choose one or the other—it's to strike the right balance.

Are you ready to open a CD? Synchrony offers CDs that can help you start saving now and calculate your CD earnings in the future.

READ MORE: How Can I Build Wealth?