Updated June 22, 2026 | Verified by the WalletGrower Editorial Team
Quick Answer: Marcus vs Ally vs Synchrony Savings
Best APY: Marcus by Goldman Sachs — 3.50% APY, no minimum, no monthly fee
Best full banking experience: Ally Bank — 3.10% APY, plus checking, savings buckets, and CDs under one roof
Best with ATM access: Synchrony Bank — 3.40% APY, plus an optional ATM card (rare for a savings account)
All three are FDIC-insured up to $250,000, charge no monthly fees, and require no minimum deposit. APYs are variable and can change at any time. Rates verified June 22, 2026 against the VERIFIED-RATES-DB, last updated June 15, 2026 from primary vendor sources.
High-yield savings accounts are now paying 3–4% APY at the best online banks — 15 to 20 times the national average of 0.41% APY at traditional banks. Marcus, Ally, and Synchrony are three of the most searched names in the space, each with a distinct value proposition beyond the rate itself.
We compared all three on APY, fees, account features, banking ecosystem, and who each account is actually best for.
Side-by-Side Rate and Feature Comparison
| Feature | Marcus by Goldman Sachs | Ally Bank | Synchrony Bank |
|---|---|---|---|
| Current APY | 3.50% | 3.10% | 3.40% |
| Minimum deposit | $0 | $0 | $0 |
| Monthly fee | $0 | $0 | $0 |
| FDIC insured | Yes ($250K limit) | Yes ($250K limit) | Yes ($250K limit) |
| Checking account | No | Yes | No |
| ATM card / access | No | Yes (checking account) | Yes (optional ATM card) |
| Savings buckets / goals | No | Yes (Savings Buckets) | No |
| CDs available | Yes (competitive rates) | Yes | Yes |
| Mobile app rating | 4.7 (iOS) / 4.3 (Android) | 4.7 (iOS) / 4.4 (Android) | 4.8 (iOS) / 4.6 (Android) |
| Transfer times | 1–3 business days | 1–3 business days | 1–3 business days |
| Zelle support | No | Yes | No |
APYs verified June 22, 2026 (within 7-day refresh window) from marcus.com, ally.com, synchrony.com and cross-referenced against Bankrate, Motley Fool, and RateBrain. All APYs are variable and subject to change without notice.
Marcus by Goldman Sachs: Best APY
Verdict: Highest APY of the three at 3.50% with no strings attached — no minimum, no fee, no account opening hoops.
Best for: Savers who want to maximize interest on a dedicated savings fund and don't need everyday banking features.
Marcus by Goldman Sachs pays 3.50% APY on its High-Yield Savings Account as of June 2026 — 40 basis points above Synchrony and 40 basis points above Ally. On a $25,000 balance, that APY difference translates to $100/year more in interest than Synchrony and $100 more than Ally, assuming rates hold steady.
Marcus offers no checking account, no ATM card, and no bill pay — it's a pure savings and CD product. Transfers to and from an external bank account take 1–3 business days. There's no minimum deposit, no monthly fee, and no cap on the amount earning the full APY rate. Goldman Sachs is also one of the most financially stable institutions offering an online savings product, with the account FDIC-insured to $250,000.
What we like: Highest APY among the three, no minimum, no fee. Marcus's CD rates are also consistently competitive for savers looking to lock in a rate. The mobile app (4.7 on iOS) is clean and functional for what the account does. Goldman Sachs institutional credibility is a real psychological plus for larger deposits.
Watch-outs: Marcus is savings-only — you'll still need a checking account elsewhere, which means external transfers for every withdrawal. No Zelle, no ATM access. Some users report customer service being harder to reach during high-volume periods. Source: marcus.com; Yahoo Finance Marcus review June 2026; Motley Fool Marcus review 2026.
Ally Bank: Best Full Banking Experience
Verdict: Best for people who want to consolidate all their banking — checking, savings, CDs, and investing — in one place with no fees.
Best for: People ready to switch to a full online bank and want a savings account that integrates directly with their spending account.
Ally's 3.10% APY trails Marcus by 40 basis points but comes with the broadest banking ecosystem of the three: a no-fee checking account with Zelle, a debit card with ATM fee reimbursements up to $10/month, savings buckets (you can split your savings account into named goal buckets like "Emergency Fund" or "Vacation 2027"), and CDs. Ally is genuinely a full online bank, not just a savings account provider.
Ally's Savings Buckets feature is the most distinctive element: instead of managing multiple savings accounts, you split one account into named buckets with individual balances. Every bucket earns the same 3.10% APY. For savers managing multiple financial goals simultaneously, this is meaningfully better than the alternatives.
What we like: Full bank functionality — no need to maintain a separate checking account. Savings Buckets is the most practical savings-management feature of any bank in this comparison. Zelle integration. ATM access via checking account. Consistently strong customer service ratings. App rated 4.7 / 4.4.
Watch-outs: 3.10% APY is the lowest of the three — the 40 bps gap vs Marcus adds up on larger balances. No branch locations (same as the others, but relevant if you ever deposit cash). Source: ally.com; Bankrate Ally savings review June 2026; SwitchWize Ally review 2026.
Synchrony Bank: Best with ATM Access
Verdict: A rare combination of high APY (3.40%) with optional ATM access on the savings account itself — unusual in the HYSA category.
Best for: Savers who occasionally need physical access to their savings without setting up a separate checking account.
Synchrony Bank pays 3.40% APY — second highest of the three — and offers something most high-yield savings accounts don't: an optional ATM card that lets you withdraw directly from your savings balance. This matters for savers who don't want a full checking account but occasionally need physical access to their cash. Synchrony reimburses up to $5/month in ATM fees charged by other networks.
Synchrony doesn't offer a checking account or Zelle, but for its specific purpose — a high-rate savings account with occasional cash access — it does the job better than Marcus (which has no ATM card) and without requiring the full banking relationship that Ally implies. No minimum deposit, no monthly fee, FDIC-insured to $250,000.
What we like: 3.40% APY is meaningfully above Ally. The optional ATM card on a savings account is a genuine differentiator. CD options available for savers who want to lock in a rate. App rated highest of the three (4.8 iOS, 4.6 Android).
Watch-outs: No checking account means you'll still need external banking for deposits, bill pay, and Zelle. No savings-goal / bucket feature. The $5/month ATM reimbursement is modest compared to Ally's $10. Source: synchrony.com; RateBrain Synchrony review 2026; Motley Fool Synchrony review 2026.
Which Should You Open? (Decision Matrix)
| If you are trying to... | Choose this | Why |
|---|---|---|
| Maximize APY on a dedicated savings balance | Marcus | 3.50% APY — highest of the three, no conditions |
| Switch your entire banking to one no-fee online bank | Ally | Checking + savings + CDs + Zelle + ATM card in one place |
| Get occasional ATM cash access without a checking account | Synchrony | ATM card on a savings account at 3.40% APY — rare combination |
| Save toward multiple goals simultaneously | Ally | Savings Buckets splits one account into named goal pools |
| Deposit $100,000+ (near FDIC limit concern) | Split across two | FDIC covers $250K per bank — spread large deposits across two institutions |
| Start with no deposit requirement | Any of the three | All three require $0 minimum to open |
See more high-yield savings options
Compare rates from 15+ banks — updated weekly with verified APYs.
Compare savings accountsHow Much More Will You Earn at 3.50% vs 3.10%?
On a $10,000 balance held for one year: Marcus at 3.50% earns $350, Synchrony at 3.40% earns $340, and Ally at 3.10% earns $310. The annual difference between Marcus and Ally is $40 on $10,000 — about the cost of a streaming subscription. On a $50,000 emergency fund, that gap widens to $200/year. The higher the balance, the more the APY difference matters.
That said, if you're going to consolidate to Ally for the full banking experience, $200/year may be a reasonable price to pay for checking, Zelle, and the buckets feature — especially if it replaces a fee-charging bank account you're currently paying for.
A Note on Rate Stability
All three banks adjust their savings rates in response to Federal Reserve policy. When the Fed raises rates, HYSA rates typically follow within a few weeks. When the Fed cuts rates, they fall within a similar window. None of these three banks has a history of dramatically lagging the market on rate decreases — but none will hold their current rate indefinitely if the Fed pivots. The best strategy is to open the account that fits your banking needs and accept that the APY will move with the market, rather than rate-chasing between accounts every 3 months.
Is Marcus savings account safe?
Yes. Marcus by Goldman Sachs is a product of Goldman Sachs Bank USA, a federally chartered bank insured by the FDIC up to $250,000 per depositor per ownership category. Goldman Sachs is one of the largest and most financially stable banks in the world. Your savings at Marcus are as safe as any FDIC-insured account at a major bank. For deposits above $250,000, split the balance across multiple banks or consider adding a joint account owner to extend FDIC coverage to $500,000 per category.
What is the difference between APY and APR for a savings account?
APY (Annual Percentage Yield) reflects the actual interest earned over a year including compounding. APR (Annual Percentage Rate) does not include compounding. For savings accounts, APY is the correct comparison number — it tells you exactly how much your balance will grow in one year assuming you don't make withdrawals. All three banks compound daily and credit interest monthly, which is standard for HYSA products. A 3.50% APY means a $10,000 balance becomes approximately $10,350 after one year, before withdrawals.
Can I use Ally as my primary bank?
Yes — Ally is one of the most popular online-only primary banks in the U.S. Its Interest Checking account earns interest (small), has no monthly fee, and comes with a debit card, Zelle, and ATM fee reimbursements. You can set up direct deposit, pay bills via ACH, and use Zelle for person-to-person transfers. The only limitation compared to a traditional bank is no cash deposit capability (you'd need to buy a money order and mail it, or use a prepaid card) and no branch locations. For most people who primarily receive direct deposit and spend via card or digital transfer, Ally works well as a primary bank.
Does Synchrony have a checking account?
No. Synchrony Bank offers savings products (High Yield Savings, Money Market, CDs) but does not offer a checking account. If you open a Synchrony High Yield Savings account, you'll need a separate checking account at another bank for everyday spending, bill pay, and Zelle. The optional ATM card on the savings account helps bridge this gap for occasional cash needs, but Synchrony is not designed to replace a checking account.
How often do Marcus, Ally, and Synchrony change their APY?
All three banks can change their APY at any time without advance notice — this is standard for variable-rate savings accounts. In practice, all three adjust rates in response to Federal Reserve interest rate decisions. Since the Fed began its rate-cut cycle in late 2024, HYSA rates across the industry have gradually declined from the 5%+ peak rates of 2023–early 2024. The current rates (Marcus 3.50%, Synchrony 3.40%, Ally 3.10%) reflect a stabilized environment. WalletGrower re-verifies all three rates weekly and updates this page when changes are detected.
Which high-yield savings account is best for an emergency fund?
For a dedicated emergency fund, Marcus is the best choice of the three — highest APY (3.50%) and no temptation from ATM access or spending features to raid the fund. Synchrony is a close second at 3.40% with ATM card optionality (leave the card at home). Ally's savings buckets feature is useful if you want to name a bucket "Emergency Fund" and see it clearly separated from other savings goals, even though the APY is lower. The right answer depends on your temperament: if you want the most interest and minimal friction to spend, Marcus. If you want integrated goal-tracking, Ally.
Disclosure: WalletGrower may earn a referral fee when you open an account through links on this page. This does not affect the APY you receive or our editorial rankings. | Rate accuracy: APYs verified June 22, 2026 against primary sources (marcus.com, ally.com, synchrony.com) and cross-referenced against Bankrate, RateBrain, and Motley Fool. APYs are variable and subject to change at any time — confirm current rates on the bank's website before opening an account. | WalletGrower is not a bank. Deposits are made directly with Marcus, Ally, or Synchrony — FDIC insurance applies to those institutions, not to WalletGrower.