Comparing Certificate of Deposit Rates: Where to Find Top APYs and What to Check
Certificate of deposit interest varies across banks, credit unions, and brokered platforms. This guide explains current top annual percentage yields, how APY is calculated, how term length shifts returns, and the practical checks savers use when comparing providers. It covers differences between national banks, online banks, and credit unions, specialty CD types, eligibility and minimums, insurer basics, and where published rate data typically comes from.
Current top CD rates and comparison criteria
Top yields are often concentrated at online banks and some credit unions, with national banks usually offering lower headline rates. When comparing offers, focus on APY, term length, early withdrawal penalties, minimum deposit, and whether a promotional rate applies only to new customers or certain balances. Look for clear source dates and confirm whether the rate is a limited-time offer. Data described here is current as of March 20, 2026 and drawn from bank rate pages, credit union disclosures, and federal insurer notices.
How APY is calculated and what it means for returns
APY shows the annual return including compound interest. A simple way to think about it is that APY combines the stated interest rate with the frequency of compounding to express one annualized number. For a fixed-rate CD, the APY tells you the percent growth over a year if funds stay until maturity. The higher the compounding frequency, the closer the reported APY will reflect actual earned interest, but compounding usually matters less than the headline APY for short terms.
Rate differences by term length
Short-term CDs, like three- or six-month terms, often track the near-term interest environment and sit below one-year yields. One-year and two-year CDs typically offer modestly higher APYs. Longer terms, such as five-year CDs, can have still higher yields but they lock money up longer and often carry steeper penalties for early withdrawal. In rising-rate environments, short terms let savers roll into higher rates sooner. In falling-rate environments, locking for longer secures the current yield.
National banks versus online banks versus credit unions
National brick-and-mortar banks generally price CDs lower because they offer many services and maintain physical branches. Online banks tend to pass lower overhead into higher offers. Credit unions can match or beat online banks for select members, especially where membership qualifying fields are broad. Keep in mind that credit union accounts are usually insured by the National Credit Union Administration, while bank deposits are insured by the Federal Deposit Insurance Corporation. Each type of institution follows similar disclosure practices but may differ on minimums and how promotional APYs apply.
| Provider type | Typical APY range | Liquidity and access | Minimum deposit |
|---|---|---|---|
| National banks | Low to moderate | Branch access; in-person withdrawals may be limited | $500–$1,000 common |
| Online banks | Moderate to high | Web and mobile access; transfers to linked accounts | $0–$1,000 common |
| Credit unions | Moderate to high | Member-only access; some local branch limits | $50–$500 typical |
Specialty CD products: jumbo, brokered, and promotional offers
Jumbo CDs require large minimums, often $100,000, and can offer a slightly higher APY for that balance tier. Brokered CDs are sold through brokerage firms and may offer access to a broader market of issuers; they carry different liquidity if traded before maturity. Promotional CDs advertise higher introductory APYs for limited windows or for new customers; read the fine print to see how long the rate lasts and whether it reverts after a promotional period.
Eligibility, minimums, and balance limits
Eligibility rules vary. Credit unions often require membership, which can be based on geography, employer, or an associational tie. Some banks limit promotional APYs to new accounts or to customers who meet deposit or relationship requirements. Minimums can range from under $100 to $100,000 for jumbo products. Also watch balance tiers: some higher APYs only apply to portions of an account balance or to balances below or above a set threshold.
Insured coverage basics: FDIC versus NCUA
Most bank CDs are covered by the Federal Deposit Insurance Corporation for up to $250,000 per depositor, per insured bank, for each account ownership category. Credit union shares are similarly protected by the National Credit Union Administration, also up to $250,000 per member, per insured credit union, by account ownership. For larger deposits, consider spreading funds across different ownership categories or different insured institutions to stay within limits. Brokered CDs may be FDIC-insured if issued by an FDIC bank, but check the issuer and the brokerage disclosures.
Timing: how often rates change and the data date
Published CD rates can change daily, driven by monetary policy, market rates, and competition. Banks and credit unions update online rate pages and disclosures frequently. The descriptive rates here reflect conditions current as of March 20, 2026; verify live rates directly with the institution before making decisions. Primary sources include bank rate pages, credit union disclosures, and the FDIC and NCUA insurer sites for coverage rules.
Practical comparison checklist and rate sources
When evaluating offers, check these items in the order that matters to you: confirmed APY and term length, minimum deposit and balance tiers, early withdrawal penalty schedule, whether the offer is promotional and its duration, membership or eligibility rules, and insurance coverage details. Primary sources that reduce uncertainty include the institution’s rate page, the account terms or certificate disclosure, and the FDIC or NCUA insurance lookup tools. Keep screenshots or PDFs of rate disclosures with their dates for records.
Trade-offs, constraints and accessibility
Higher APYs often come with trade-offs. Jumbo and long-term CDs usually need larger deposits or longer commitments. Promotional rates might reset after a limited term or apply only to new customers. Brokered CDs offer wider choices but can be less liquid and may involve brokerage fees. Accessibility varies: online banks make deposits and transfers digital, while local branches can help with in-person needs. Finally, insured coverage protects principal up to limits, but that protection depends on correct ownership categories and on the issuing institution’s insurer.
Key takeaways and next verification steps
Higher headline APYs are most common at online banks and some credit unions, while national banks tend to lag but offer branch convenience. Term length and early withdrawal terms affect effective return more than small APY differences for short investments. Before committing funds, verify live APYs, read the certificate disclosure for penalty terms, confirm deposit insurance status, and note any membership requirements. For sums over insurance limits, plan how to spread deposits or seek different ownership categories.
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How CD APY compares by term length
Are credit union CD rates higher often
Finance Disclaimer: This article provides general educational information only and is not financial, tax, or investment advice. Financial decisions should be made with qualified professionals who understand individual financial circumstances.
