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The best 18-month certificates of deposit (CDs) offer yields that you could typically only get by locking in your cash for longer. But thanks to high inflation and the Federal Reserve raising interest rates, you can park your cash in a high-yielding savings product for a relatively short period of time and ride out the current turbulent economic moment.

Account details and annual percentage yields (APYs) are accurate as of June 27, 2024.

Compare the best 18-month CDs

INSTITUTIONCD NAME18-MONTH CD APYMIN. DEPOSIT
Synchrony Bank certificates of depositSynchrony Bank certificates of deposit4.50%$0
INSTITUTIONSynchrony Bank certificates of deposit
CD NAMESynchrony Bank certificates of deposit
18-MONTH CD APY4.50%
MIN. DEPOSIT$0
Ally Bank High Yield certificates of depositAlly Bank High Yield certificates of deposit4.25%$0
INSTITUTIONAlly Bank High Yield certificates of deposit
CD NAMEAlly Bank High Yield certificates of deposit
18-MONTH CD APY4.25%
MIN. DEPOSIT$0
Capital One 360 certificates of depositCapital One 360 certificates of deposit4.45%$0
INSTITUTIONCapital One 360 certificates of deposit
CD NAMECapital One 360 certificates of deposit
18-MONTH CD APY4.45%
MIN. DEPOSIT$0
Barclays Online certificates of depositBarclays Online certificates of deposit4.50%$0
INSTITUTIONBarclays Online certificates of deposit
CD NAMEBarclays Online certificates of deposit
18-MONTH CD APY4.50%
MIN. DEPOSIT$0
Digital Federal Credit Union Regular certificatesDigital Federal Credit Union Regular certificates4.34%$500
INSTITUTIONDigital Federal Credit Union Regular certificates
CD NAMEDigital Federal Credit Union Regular certificates
18-MONTH CD APY4.34%
MIN. DEPOSIT$500
Marcus by Goldman Sachs High-Yield certificates of depositMarcus by Goldman Sachs High-Yield certificates of deposit4.70%$500
INSTITUTIONMarcus by Goldman Sachs High-Yield certificates of deposit
CD NAMEMarcus by Goldman Sachs High-Yield certificates of deposit
18-MONTH CD APY4.70%
MIN. DEPOSIT$500
First Internet Bank certificates of depositFirst Internet Bank certificates of deposit4.98%$1,000
INSTITUTIONFirst Internet Bank certificates of deposit
CD NAMEFirst Internet Bank certificates of deposit
18-MONTH CD APY4.98%
MIN. DEPOSIT$1,000

Why trust our banking experts

Our team of experts evaluates hundreds of banking products and analyzes thousands of data points to help you find the best product for your situation. We use a data-driven methodology to determine each rating. Advertisers do not influence our editorial content. You can read more about our methodology below.

  • 330+ CDs offered by 46 institutions.
  • 4 levels of fact checking.
  • 50+ data points analyzed.

Synchrony Bank certificates of deposit

BLUEPRINT RATING
Our ratings are calculated based on fees, rates, rewards and other category-specific attributes. All ratings are determined solely by our editorial team.
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On Fiona’s website
CD APY 18 month
4.50%
Minimum deposit requirement
$0
What should you know
Synchrony Bank offers a 4.50% APY on its 18-month CD and has a $0 minimum deposit. This combination is ideal for young savers starting out as well as those who are more established. Synchrony’s early withdrawal fees, however, are on the steep side: 180 days’ simple interest for CD terms more than 12 months but less than 48 months. While we want savers to stick with their initial savings plan, life sometimes happens. Therefore be confident that you can make ends meet without your principal for 18 months. If you don’t mind halving the term, Synchrony’s 9-month CD has a slightly higher APY of 4.90%. Not only will you earn a higher yield, but you’ll have access to your cash months earlier. The bank offers other savings products as well, including high-yield savings, money market accounts and retirement CDs. However, you won’t find a checking account or any type of loan. Synchrony only offers credit cards and savings accounts and has no physical locations. Pros
  • High APY. 
  • No minimum deposit. 
  • Solid digital experience.
Cons
  • Expensive early withdrawal fees. 
  • No physical branches.

Ally Bank High Yield certificates of deposit

Ally Bank High Yield certificates of deposit
BLUEPRINT RATING
Our ratings are calculated based on fees, rates, rewards and other category-specific attributes. All ratings are determined solely by our editorial team.
CD APY 18 month
4.25%
Minimum deposit requirement
$0
What should you know
Ally Bank’s 18-month CD comes with a competitive 4.25% yield that compounds daily and doesn’t require a minimum deposit. Should you end up renewing your CD, Ally will automatically add a 0.05% loyalty reward to the new interest rate of any CD you renew into. A nice perk for these times is Ally’s Ten Day Best Rate Guarantee. It promises that Ally will automatically boost your rate to match if the yield on the CD term you select goes up within 10 days of you opening the CD. That should give you the confidence to pull the trigger. Still, you must have conviction in your choice: You’ll pay 60 days’ interest on CD terms that are 24 months or fewer should you withdraw your principal early. Pros
  • High APY.
  • Interest compounded daily.
  • Ten Day Best Rate Guarantee. 
Cons
  • No physical branches. 
  • Early withdrawal penalty.

Capital One 360 certificates of deposit

Capital One 360 certificates of deposit
BLUEPRINT RATING
Our ratings are calculated based on fees, rates, rewards and other category-specific attributes. All ratings are determined solely by our editorial team.
CD APY 18 month
4.45%
Minimum deposit requirement
$0
What should you know
Capital One’s 18-month online CD has a competitive 4.45% yield. It has no minimum balance requirements and no monthly fees, making it a great option for new savers. When the CD matures, you have a 10-day grace period to make a move (withdraw funds or choose a different CD term), otherwise it automatically renews. If you close an 18-month CD early, you’ll forfeit six months’ worth of interest. If your CD hasn’t earned that much interest yet, your principal can be reduced (which is not great, but rather common in the industry). Pros
  • High APY.
  • 10-day grace period at maturity.
  • No minimum balance.
Cons
  • Early withdrawal penalty can reduce the CD’s principal.
  • No cash deposit.

Barclays Online certificates of deposit

BLUEPRINT RATING
Our ratings are calculated based on fees, rates, rewards and other category-specific attributes. All ratings are determined solely by our editorial team.
Learn More
On Barclays’ website
CD APY 18 month
4.50%
Minimum deposit requirement
$0
What should you know
Barclays offers rates worthy of a crown: its 18-month CD yields 4.50%, There are no minimum balance requirements and you have a 14-day window in which to fund your CD after you open it. You can choose to receive monthly interest payments from the CD over its life or fully enjoy the daily compounding interest. If you need to access the principal, however, early withdrawal penalties apply. On CD terms of 24 months or fewer, you’ll pay 90 days’ worth of interest. While this is a relatively lenient cost, if you haven’t earned enough interest to cover it, the difference will be deducted from your principal balance. Pros
  • Daily compounding interest.
  • Monthly interest payment option.
  • Relatively low early withdrawal fee.
Cons
  • Early withdrawal fees can reduce principal.
  • Automatic CD renewal.

Digital Federal Credit Union Regular certificates

Digital Federal Credit Union Regular certificates
BLUEPRINT RATING
Our ratings are calculated based on fees, rates, rewards and other category-specific attributes. All ratings are determined solely by our editorial team.
CD APY 18 month
4.34%
Minimum deposit requirement
$500
What should you know
DCU doesn’t offer a smattering of terms, but a whole range so you can customize how long you want your deposit to last. If you choose 12 to 23 months, you’ll earn 4.34%. If you’re planning a big purchase, the flexibility of choosing the exact term can help you time your investments to suit your budget. The early withdrawal penalty for terms from 12 to 35 months is 90 days’ of dividends, which is on the lower side. The minimum balance requirement of $500, while more than $0, is manageable for most. You will have to become a member to join, which may not be for everyone. If you don’t qualify for membership by virtue of your location or employer, you can make a donation to one of several nonprofits, including $10 to Reach Out for Schools. Pros
  • Customizable terms.
  • Lower penalty for early withdrawal. 
  • Tons of options to gain membership.
Cons
  • Membership required.
  • $500 minimum balance requirement.

Marcus by Goldman Sachs High-Yield certificates of deposit

Marcus by Goldman Sachs High-Yield certificates of deposit
BLUEPRINT RATING
Our ratings are calculated based on fees, rates, rewards and other category-specific attributes. All ratings are determined solely by our editorial team.
CD APY 18 month
4.70%
Minimum deposit requirement
$500
What should you know
Marcus, the online savings division of Goldman Sachs, offers a panoply of high-yielding savings options including its 18-month CD with a rate of 4.70%. There’s also a 10-day rate guarantee, which means that your APY will rise if rates go up within 10 days of your account opening. You’ll have a generous 30-day window to fund your CD and you can take interest dispersals, but the early withdrawal penalty of 180 days’ interest will apply if you need to cash out ahead of the maturity date. Pros
  • 24/7 customer service.
  • 10-day rate guarantee. 
  • Solid yields.
Cons
  • $500 minimum deposit. 
  • Early withdrawal penalty of 180 days.

First Internet Bank certificates of deposit

First Internet Bank certificates of deposit
BLUEPRINT RATING
Our ratings are calculated based on fees, rates, rewards and other category-specific attributes. All ratings are determined solely by our editorial team.
CD APY 18 month
4.98%
Minimum deposit requirement
$1,000
What should you know
First Internet Bank offers a highly competitive 18-month a 4.98% yield. There are no monthly maintenance fees and customer service is available during expanded business hours by chat, phone and email. You’ll need a minimum of $1,000 though, which may put this CD out of reach for savers just beginning their financial journey. Yet, if you’re in want of a new digital bank (in addition to a great 18-month CD) that offers a full product suite from checking to loans, First Internet Bank is worth a look. Pros
  • High yield. 
  • No monthly maintenance fees. 
  • Customer service available by phone, email and chat.
Cons
  • $1,000 minimum deposit.
  • 180-day early withdrawal penalty.
 

Methodology

We analyzed more than 330 CDs offered by 46 institutions and gave each a score out of 100. CDs with a score of 100 earned five stars; those that scored 80 earned four stars; and so on. Below are the factors that went into our scoring and how we weighed each.

  • APY: 70%.
  • Customer experience: 10%.
  • Minimum deposit: 5%.
  • Compound interest schedule: 5%.
  • Digital experience: 5%.
  • Available terms: 3%.
  • Availability: 2%.

The point of a CD is to earn a high yield on your cash, so we gave it the highest weighting in our methodology. We also gave weight to CDs that compound daily, since you’ll earn a little bit extra than if it compounded monthly or quarterly.

Still, it’s important to take other factors into consideration, and offer a range of winners. After all, you may be willing to sacrifice a few hundredths of a percentage point if it means opting into a bank with good customer service and a robust digital offering.

National average rates for CDs

The Federal Deposit Insurance Corporation (FDIC) tracks the average rates paid on CD accounts nationwide. While the agency doesn’t post rates for 18-month CDs, it does for other term lengths. As of June 17, 2024, the average 12-month CD paid 1.86% APY and the average 24-month CD paid 1.57% APY. The average 18-month CD rate likely falls somewhere in the middle. 

What is an 18-month CD?

A certificate of deposit, or CD, is a type of savings product that requires you to put money into an account and keep it there for a set period of time. In exchange, you earn a guaranteed interest rate. Annual percentage yields, or APYs, are often higher on CDs compared to standard savings accounts. 

CDs are described by their term — an 18-month CD is a certificate of deposit with an 18-month-long term. 

Quick Tip. An 18-month CD is a great prong for a CD ladder. Consider opting for CDs with terms of 6, 12 and 18 months so you can balance yields and access to cash.

If you withdraw your CD funds early, you’ll typically pay a penalty and give up some of your interest. The early withdrawal penalty is usually tied to the term length and longer-term CDs often have steeper penalties. Once the CD reaches maturity, you can choose to renew the CD or withdraw the funds along with the interest you earned.

What is a good CD rate for an 18-month term?

CD rates fluctuate, so what’s considered a good rate will change depending on the current interest rate environment.

“A good rate on an 18-month CD is one that is higher than the current average rate,” said Michael Collins, a chartered financial analyst (CFA) and chief executive of WinCap Financial. 

Be sure to look around for the best rates.

Many online banks offer rates well above the national average. For example, Ally Bank, Sallie Mae Bank and Synchrony Bank all offer rates above 4% on 18-month CDs. 

Short-term vs. long-term CDs

You can find CDs with just about any term length, but most financial institutions offer CD terms ranging from three months to five years (some go even as long as 10 years). Short-term CDs generally have terms of one year or less, while mid-term CDs are between one and three years, and long-term CDs lock up your funds for even lengthier terms. 

Shorter-term CDs require less of a commitment, but they often have a lower earning potential because your money doesn’t have much time to grow. 

Quick tip. You may earn higher yields with short-term CDs, but consider opting for a long-term CD to lock in a high rate that may not be available for years to come.

The typical upsides to mid-term and long-term CDs are higher APYs and more time for your money to grow. 

“You have more time to benefit from the higher interest rates associated with longer terms,” said Collins. “[But you’ll be] locked into the fixed rate for the duration of the term, which could mean missing out on potential gains from higher rates later on.”

CDs with distant maturity dates could also cost you in the form of interest and penalties if you need to withdraw money early. So before opening a CD, consider which term works for you and your money goals.

Is an 18-month CD term right for you?

If you want a guaranteed APY at a relatively high rate, and you don’t mind locking away your funds, an 18-month CD can be a good idea. While 18-month CDs have come down slightly in recent months, you can still find some options that offer yields close to 5%. 

CD rates generally trend with the federal funds rate, which is controlled by the Federal Reserve. The central bank raised that benchmark rate more than 10 times in 2022 and 2023, so CD rates followed suit. 

Looking for the best CDs? Consider our top picks.

But the hikes will eventually peter out, causing CD rates to plateau and eventually drop. 

“[If you think rates are going down], it could be a good idea to lock in a good interest rate with an 18-month CD rate now,” said Lawrence Sprung, a certified financial planner, wealth advisor and founder of Mitlin Financial.

But if you believe rates are trending upward, you may want to choose a shorter term. This gives you the flexibility to potentially snag a higher rate when your CD matures.

Choosing the best 18-month CDs

CD rates are near the highest they’ve been in more than a decade, so plenty of banks and credit unions are offering them. Here are some ways to make sure you find the best one.

Check your options

Besides CD terms, you can also choose between CD types:

  • A standard CD allows you to make one initial deposit and doesn’t allow for early withdrawal without penalty. 
  • No-penalty CDs don’t charge fees for early withdrawal, but they typically offer lower APYs. 
  • In a rising-rate environment, bump-up CDs allow you to request a one-time APY increase during the term. 
  • Add-on CDs allow you to deposit more money into the CD account over time.

Shop around

The main purpose of opening a CD is to earn money, so research several institutions to find the best deal. Generally, online banks and smaller financial institutions tend to offer the highest rates.

Carefully read the terms and conditions

Understand the rules surrounding minimum deposits, withdrawal allowances, penalties and fees before opening a CD account. 

Consider deposit insurance limits

Banks and credit unions that are federally insured each provide up to $250,000 in deposit insurance per depositor and per account type. If you’re putting more than $250,000 in CDs, consider spreading out the funds at different institutions to make sure each CD account receives full coverage. 

“The last thing you want to do is have more than the FDIC limit in one bank, and wake up one day to learn that the bank has failed and your entire deposit will not be insured,” said Sprung.

Frequently asked questions (FAQs)

The answer depends on your needs. An 18-month CD could be a solution to locking in a high yield and earning some extra cash without forgoing liquidity long-term or taking on the risk inherent in the stock market. You may not want one (or you may want to invest a smaller sum) if you decide a better potential return is worth the risk or if you see a future need for the funds that’ll occur before the year-and-a-half term is up.

The answer depends partly on your needs. If you’ll need to withdraw money in the near term, then opening a high-yield savings account will give you the liquidity you need without incurring penalties. Money market accounts (MMAs) are another option — they act like a savings account, but you usually earn a higher APY on larger balances and receive a debit card or checks to make withdrawals. 

Online banks often offer high-yield CDs with the best rates. These institutions operate online, which means they have lower overhead costs and can pass on the savings to customers. Smaller financial institutions also typically offer good CD rates to attract new depositors. And credit unions tend to offer higher CD rates compared to banks.

You could lose money on an 18-month CD if you make an early withdrawal and the CD provider charges a steep penalty that eats into your principal. The penalty, however, depends on the CD and the institution — not every bank is so strict. 

A CD ladder is a savings strategy that involves multiple CDs of different term lengths. The end goal is to have a series of long-term CDs that mature at regular intervals. The idea is that this diversification allows you to lock in high yields and retain some liquidity. 

For example, imagine having a one-, two-, three-, four- and five-year CD. As each matures, you roll over the funds into a five-year CD. By the end of the ‘ladder climb,’ you have five five-year CDs, with one maturing each year.

Blueprint is an independent publisher and comparison service, not an investment advisor. The information provided is for educational purposes only and we encourage you to seek personalized advice from qualified professionals regarding specific financial decisions. Past performance is not indicative of future results.

Blueprint has an advertiser disclosure policy. The opinions, analyses, reviews or recommendations expressed in this article are those of the Blueprint editorial staff alone. Blueprint adheres to strict editorial integrity standards. The information is accurate as of the publish date, but always check the provider’s website for the most current information.

Kim Porter

BLUEPRINT

Kim Porter is a writer and editor who's been creating personal finance content since 2010. Before transitioning to full-time freelance writing in 2018, Kim was the chief copy editor at Bankrate, a managing editor at Macmillan, and co-author of the personal finance book "Future Millionaires' Guidebook." Her work has appeared in AARP's print magazine and on sites such as U.S. News & World Report, Fortune, NextAdvisor, Credit Karma, and more. Kim loves to bake and exercise in her free time, and she plans to run a half marathon on each continent.

Jenn Jones

BLUEPRINT

Jenn Jones is the deputy editor for banking at USA TODAY Blueprint. She brings years of writing and analytical skills to bear, as she was previously a senior writer at LendingTree, a finance manager at World Car dealerships and an editor at Standard & Poor’s Capital IQ. Her work has been featured on MSN, F&I Magazine and Automotive News. She holds a B.S. in commerce from the University of Virginia.