Marcus CD vs Synchrony CD vs Capital One CD: 2026 Rate Showdown

Bottom line: All three banks offer competitive online CDs with FDIC insurance and no monthly fees. Marcus leads on the 12-month rate (—% vs —% at Synchrony, —% at Capital One). Synchrony has the most term options. Capital One has the friendliest early withdrawal penalty on longer terms. The differences are small — pick on rate at your specific term, then break ties on whichever interface and ecosystem you prefer.

Marcus by Goldman Sachs, Synchrony Bank, and Capital One are three of the largest online deposit providers in the United States. Each runs a CD program competitive with the top of the market. The differences between them are smaller than the marketing makes them sound — but the small differences add up at meaningful balances, and the right choice depends on more than just headline APY.

This article compares all three banks on the variables that actually matter: current rates by term, early withdrawal penalty, account features, and customer experience. We have included live rate data pulled from the SwitchWize rate database.

Current Rate Comparison

Rates change frequently. The numbers below reflect mid-2026 levels and are sourced from each provider's published rate sheet, cross-checked against the SwitchWize rate database.

In dollar terms on a $25,000 12-month CD, the gap between Marcus and Capital One is approximately $25 over the year — small but not zero. On a $100,000 5-year ladder, the cumulative gap can reach $250 across the term.

The rate leader rotates. Marcus has held the top position on 12- and 18-month terms for most of 2026 to date. Synchrony has occasionally taken the lead at the very short end (3- and 6-month CDs). Capital One has rarely been the absolute leader but is consistently competitive.

How They Compare on Terms and Features

Marcus by Goldman Sachs

Strengths: Highest rates on most terms. Backed by Goldman Sachs Bank USA, one of the most capitalized banks in the country. Mobile and web experience is clean and minimal — no aggressive cross-selling. Funding via ACH transfer is fast (typically 1–2 business days).

Term options: 6, 9, 12, 18, 24, 36, 48, 60 months. No "specials" or oddly-termed promotional CDs.

Minimum deposit: $500.

Rate lock: Marcus offers a 10-day rate guarantee on new CDs. If the rate at your chosen term increases within 10 days of opening, you get the higher rate automatically. This is a meaningful benefit during periods of rate volatility and is not offered by Synchrony or Capital One.

Early withdrawal penalty:

• 90 days of interest on terms of 1 year or less
• 270 days of interest (9 months) on terms over 1 year

The 270-day penalty on longer terms is the most punitive of the three banks. If you might need access, this is a meaningful consideration on a 3- or 5-year CD.

Customer service: US-based phone support, 8 AM–10 PM ET. App Store rating 4.9 (5,200+ reviews as of mid-2026).

Synchrony Bank

Strengths: Most term flexibility — multiple intermediate terms not offered by the other two. Strong reputation in the deposit space; one of the largest online deposit-takers in the US. No monthly fees, no minimum balance, no aggressive cross-selling.

Term options: 3, 6, 9, 11, 12, 14, 15, 16, 18, 19, 24, 36, 48, 60 months. The unusual terms (11-, 14-, 16-, 19-month) are useful for laddering with specific target maturity dates.

Minimum deposit: $0 ($2,000 for some promotional rate tiers).

Early withdrawal penalty:

• 90 days of interest on terms of 1 year or less
• 180 days of interest on terms over 1 year

This is the most lenient of the three on longer terms. If you are building a 3- to 5-year ladder and want to keep the option of early withdrawal open, Synchrony's penalty structure is meaningful.

Customer service: US-based phone support, 8 AM–12 AM ET — extended hours versus Marcus and Capital One. App Store rating 4.6.

Capital One

Strengths: Full-service ecosystem. If you already have a Capital One checking account or 360 Performance Savings, the CD lives in the same app and dashboard. Sign-up is the smoothest of the three for existing customers.

Term options: 6, 9, 12, 18, 24, 30, 36, 48, 60 months.

Minimum deposit: $0.

Early withdrawal penalty:

• 3 months of interest on terms of 1 year or less
• 6 months of interest on terms over 1 year

The 6-month penalty on longer terms is the most favorable of the three. On a 5-year CD at 4.00%, the penalty for early withdrawal in year 4 is roughly 2% of principal — versus 4.5% at Marcus.

Customer service: Phone and chat, 8 AM–11 PM ET. App Store rating 4.8.

Note on the Discover acquisition: Capital One closed its acquisition of Discover Financial Services in 2025. The former Discover CD product is now branded Capital One and follows Capital One's rate sheet and terms. Existing Discover CDs were transitioned at their original rates and terms.

The Decision Framework

The differences between these three are smaller than the marketing makes them sound, but real. Here is how to choose:

Pick Marcus if...

• You want the highest rate at the 12-, 18-, or 24-month term (the most popular CD terms)
• You like a clean, minimal interface with no upsell
• You can hold to maturity (the early withdrawal penalty is meaningful)
• You value the 10-day rate guarantee — useful during volatile rate periods

Pick Synchrony if...

• You want unusual terms (11-, 14-, 16-, 19-month) for precise laddering
• You want the most lenient early withdrawal penalty on a 1-year or shorter CD
• You are building a CD-only relationship without checking
• You want extended customer service hours

Pick Capital One if...

• You already have a Capital One checking, savings, or credit card account
• You are buying a 3- to 5-year CD and want flexibility to break it early without massive penalty
• You prefer one app for all your accounts
• You are willing to give up 5–10 basis points of yield for ecosystem convenience

The Marcus rate advantage at the 12-month term — about 10 basis points over Capital One — works out to roughly $25 per year on a $25,000 CD or $100 per year on a $100,000 CD. That is real money but not life-changing. For most decisions in this comparison, the right answer is to pick the bank whose interface and ecosystem you are most likely to actually use, then break ties on rate.

What These Three Have in Common

All three banks share characteristics that make them better choices than smaller or less-established alternatives:

• FDIC insurance up to $250,000 per depositor. All three are full-service insured depository institutions, not fintech wrappers around partner banks.
• No monthly fees. Standard for online CDs in 2026 but not universal.
• No required relationships. None of the three require a checking account, direct deposit, or other product to access the published CD rate.
• ACH funding within 1–3 business days. Standard. None offer same-day funding.
• Interest compounded daily, credited monthly. Standard practice and identical math across the three.
• Auto-renewal at maturity unless you instruct otherwise. All three default to auto-renew. Each provides a 7- to 10-day grace period at maturity during which you can withdraw or change terms without penalty.

The places they differ are at the margins: rate, term flexibility, penalty structure, and ecosystem integration. None of these are decisive on their own. Choose on the variable that matters most for your situation, and accept that the others are close enough to ignore.

What This Comparison Does Not Tell You

This article compares three specific banks at their public-rate, non-promotional CD products. It does not compare:

Brokered CDs. CDs purchased through a brokerage account (Fidelity, Schwab, Vanguard) often pay higher rates than direct bank CDs because the issuing banks compete more aggressively for the brokerage's volume. Brokered CDs at all three banks above are typically 10–25 basis points higher than direct rates. The trade-off is less straightforward early-withdrawal access — brokered CDs are sold on a secondary market rather than via penalty-redeemed at the bank.

Smaller banks and credit unions. Some lesser-known online banks (CIT, Quontic, Live Oak) periodically offer CD rates 25–50 basis points above the three banks in this comparison. These typically come with smaller deposit minimums or specific promotional terms. They are worth checking — especially Live Oak, which has consistently led on long-term CD rates in 2026.

Treasury bills. A 1-year T-bill at —% currently yields about 30 basis points below a top 12-month CD on a headline basis — but is exempt from state and local tax. In high-tax states, the after-tax math often favors the Treasury. See CD Ladder vs HYSA vs Treasury Bills for the full comparison.

The Right Answer for Most People

For most readers parking $10,000 to $100,000 for 12 months, the right answer is Marcus — the rate is the highest at the most common term, the bank is well-capitalized, and the 10-day rate guarantee is a free option.

For readers building a ladder with non-standard maturity dates or wanting maximum penalty flexibility, Synchrony is the better fit.

For readers who already use Capital One for other accounts and value app consolidation, Capital One's small yield gap is reasonable to accept.

The wrong answer is leaving the money in a low-yield account waiting to decide. The current rate environment offers genuinely attractive yields on insured cash; the longer you wait, the more likely you are to lock in at a lower rate as the Fed cuts.

Rates shown reflect public rate sheets at each provider as of mid-May 2026, cross-checked against the SwitchWize rate database. Promotional and tier-specific rates may differ. Always verify current rates directly with the provider before opening any account.