Marcus by Goldman Sachs Online Savings: The Complete Guide to Earning 4.40% APY

What the Marcus Online Savings Account is

Marcus is the consumer banking brand of Goldman Sachs Bank USA. The Online Savings Account is a straightforward high-yield savings product (HYSA) — no checking, no debit card, no branches. It exists to hold cash and pay a competitive interest rate.

Deposits are held at Goldman Sachs Bank USA, an FDIC-insured institution. Balances are insured up to the applicable FDIC limits (currently $250,000 per depositor, per ownership category).

There are no monthly fees, no transaction fees, and no minimum deposit required to open the account. You can fund it with as little as $1 and withdraw or transfer at any time.

How the 4.40% APY works

The base rate on the account is 3.40% APY. This is the variable rate everyone earns and can change over time based on the broader interest-rate environment.

When you open a new account through a referral link like this one, Marcus adds a 1.00% APY boost on top of the base rate for the first 3 months from the day your account is funded. That brings your effective rate to 4.40% APY during the promotional period.

After the 3-month boost ends, your rate returns to whatever the current base APY is (3.40% today). The boosted portion is calculated on your daily balance and paid monthly along with the base interest.

Example: on a $10,000 balance held for 3 months at 4.40% APY, you earn roughly $110 in interest. The same balance at 3.40% would earn about $85 — so the referral is worth about $25 on $10,000 over 3 months, and scales linearly with your balance.

How to open a Marcus account with the referral boost

Click the referral link on this page. It carries the referral code ANT-1GC-7T1K, which tags your application so the 1.00% APY boost is automatically applied when your account is funded.

Complete the online application. You will need your Social Security Number, a US address, and a US bank account or debit card to fund the new account. The process typically takes under 10 minutes.

Fund the account within the timeframe shown in your welcome email (usually 10 business days). The boost timer starts on the funding date, not the application date.

Confirm the boost is active by checking your account dashboard. Marcus displays the boosted APY separately so you can see the promotional rate in effect.

Marcus vs other high-yield savings accounts

Marcus is comparable to other top HYSAs like Ally, Discover, Capital One 360 Performance Savings, and SoFi. Rates move together across these banks because they all follow the federal funds rate.

Where Marcus stands out is the referral boost mechanic. Most competitors do not offer a rate promotion on top of their standard APY — they compete on the base rate alone. The 1.00% boost for 3 months is effectively a cash bonus paid as extra interest.

Marcus is a pure savings product. If you want a checking account, debit card, or ATM access, pair Marcus with a separate checking account (a bank you already use is fine) and use ACH transfers to move money in and out. Transfers typically settle in 1–3 business days.

For balances above $250,000, split funds across multiple FDIC-insured institutions to stay within insurance limits, or use titled accounts (joint, trust) to expand coverage at Marcus itself.

Best ways to use a Marcus savings account

Emergency fund: park 3–6 months of expenses here. You earn a competitive rate on money you hope not to touch, and you can pull it back to checking in a couple of business days if needed.

Short-term savings goals: down payment, wedding, vacation, tax bill. Any goal 3–36 months out is a good fit — long enough to benefit from the interest, short enough that you do not need the higher (but locked-up) rates of a CD or Treasury.

Idle checking cash: many checking accounts pay 0.01% or nothing. Sweeping any balance above your monthly buffer into Marcus is an easy rate upgrade.

Sinking funds: recurring annual expenses like insurance renewals, property taxes, or car maintenance. Contribute monthly, earn interest, then withdraw when the bill comes due.

What to know before you open one

The APY is variable. If the Federal Reserve cuts rates, Marcus (and every other HYSA) will follow. The referral boost is a fixed premium above whatever the base rate is at the time.

There is no debit card or check writing. Money moves via ACH transfer to and from a linked external account, so plan for a 1–3 business day settlement.

Marcus limits withdrawals only by the standard practices for savings accounts. You can transfer money out as often as needed under current rules, though frequent large transfers may trigger routine bank review.

The 1.00% boost applies only to new customers opening through a referral. It cannot be added to an existing account, so make sure to use the referral link on your first application.

Is Marcus safe?

Yes. Deposits are held at Goldman Sachs Bank USA, which is FDIC insured. Your money is protected up to the applicable FDIC limits even if the bank were to fail.

Goldman Sachs is one of the largest and oldest financial institutions in the United States. The Marcus consumer brand has been operating since 2016 and holds tens of billions in customer deposits.

The online-only model means you manage everything through the Marcus website or mobile app. Use a strong unique password, enable two-factor authentication, and monitor your account regularly — the same hygiene you would apply to any online financial account.