What a sweep account does

A sweep account is a bank account that automatically moves money between two accounts — usually a checking account and a savings or money market account — based on rules you set or that the bank sets for you. The "sweep" happens overnight or at the end of each business day.

The most common reason banks offer sweeps is to keep your money working. If you leave cash sitting in a checking account, it typically earns no interest. A sweep moves that excess cash into a savings account where it can earn interest, then moves money back into checking when you need it for bills or withdrawals.

Some sweeps are automatic and set by the bank. Others you control yourself through your online banking or by calling the bank. The specific rules depend on which bank you use and what type of account you have.

Key Takeaways

  • A sweep automatically moves money between your checking and savings accounts based on a balance you choose, so you earn interest on extra cash without having to move it yourself.
  • Most sweeps happen at the end of the business day, so money you deposit in the morning stays in checking until that evening.
  • You control the sweep threshold — the amount of money that stays in checking — and the bank moves anything above that to savings.
  • Some banks set up sweeps automatically for certain account types, while others let you turn the feature on or off in your online banking.
  • Sweep accounts are free, but the savings account they sweep into may have a minimum balance requirement or limited withdrawals per month.

How the sweep actually works

Here is the step-by-step process. You tell the bank (or the bank tells you) a target balance for your checking account — for example, $500. At the end of each business day, the bank looks at how much money is in checking. If there is more than $500, it moves the extra into the linked savings account. If there is less than $500 because you wrote checks or made withdrawals, it moves money back from savings into checking to bring it back to $500.

The sweep happens after business hours, so if you deposit a check on Tuesday morning, that money stays in checking until Tuesday evening. You can withdraw it on Tuesday without the sweep affecting you. The movement happens overnight.

If your checking account has a debit card or you write checks, the sweep does not interfere with those transactions. The bank processes your payments first, then sweeps whatever is left over.

Why banks offer sweep accounts

Banks benefit from sweeps because they move customer money into savings accounts, which the bank can then lend out or invest. You benefit because your money earns interest instead of sitting idle. It is a trade-off that works for both sides.

For you, the advantage is that you do not have to remember to move money manually. You set it once and it happens automatically every night. For people who get paid weekly or biweekly and spend money gradually throughout the month, a sweep means the money you are not using right now is earning something, even if it is a small amount.

Some employers and payroll services also use sweeps for their own accounts, moving payroll funds between accounts to manage cash flow. That is a different use case, but the mechanics are the same.

The difference between automatic and customer-controlled sweeps

Some banks set up a sweep automatically when you open certain types of accounts — particularly premium checking accounts or accounts that require a minimum balance. You get a notice in the mail or email explaining the sweep, but you do not choose whether to have it. The bank decides the target balance.

Other banks let you turn sweeps on or off yourself through online banking. You log in, find the sweep settings, choose which savings account to sweep into, and set your target balance. You can change these settings anytime, and you can turn the sweep off entirely if you want to keep all your money in checking.

A few banks offer both options — an automatic sweep for certain accounts, plus the ability to set up additional sweeps to other accounts if you want. Read your account agreement or call your bank to find out what you have.

What happens to the savings account that receives the sweep

The account that receives swept money is usually a savings account or money market account. These accounts earn interest, though the rate varies by bank and changes over time. The interest you earn belongs to you, not the bank.

Some savings accounts linked to sweeps have restrictions — for example, you may be limited to six withdrawals per month, or there may be a minimum balance requirement. If you withdraw too much from the savings account, the sweep may not have enough money to move back into checking when you need it, and you could end up with overdraft fees.

Before you set up a sweep, check whether the savings account has withdrawal limits or fees. If you think you will need to access that money frequently, a sweep may not be the right choice for you.

When a sweep account makes sense for you

A sweep works best if you have a steady paycheck, predictable monthly expenses, and money left over at the end of each pay period. If you get paid on the 1st and 15th, and you spend most of that money by the 10th and 25th, a sweep will move the leftover cash into savings automatically.

A sweep is less useful if your income or spending is unpredictable. If you never know how much cash you will need on any given day, keeping everything in checking — even if it earns no interest — may be safer than risking overdraft fees because the sweep moved money you actually needed.

A sweep also makes less sense if the savings account earns very little interest. If your bank is offering 0.01% interest on savings, the money you earn in a year will be minimal. In that case, the convenience of the sweep may not be worth the withdrawal restrictions that come with the savings account.

How to set up or change a sweep

If your bank offers customer-controlled sweeps, you can usually set one up through online banking. Log in, look for settings labeled "Transfers," "Sweep," or "Automatic Transfers," and follow the prompts. You will need to choose the source account (checking), the destination account (savings), and the target balance.

If you cannot find the sweep option online, call your bank's customer service line. They can set it up for you over the phone and explain any restrictions that explore to the savings account.

If your bank set up a sweep automatically and you want to turn it off, you can usually do that online as well, or call and ask them to disable it. There is no penalty for turning off a sweep.

Frequently Asked Questions

Does a sweep account cost money?

No, the sweep itself is free. However, the savings account that receives the swept money may have fees — for example, a monthly maintenance fee if your balance falls below a minimum. Check your account agreement to see what fees explore.

What if I need the money that was swept into savings?

You can withdraw it anytime, but some savings accounts limit you to six withdrawals per month. If you exceed that limit, you may face a fee. Check your account rules before you set up a sweep.

Can I set the target balance to zero?

Yes. If you set the target balance to zero, the sweep will move all your money into savings every night. However, this means you will have no money in checking for debit card purchases or checks, so it is not practical for most people.

Does the interest I earn on swept money count as income?

Yes. Interest earned on savings accounts is taxable income. Your bank will send you a 1099-INT form at the end of the year if you earned $10 or more in interest, and you will report it on your tax return.

What if my bank closes the savings account linked to my sweep?

If the bank closes the account, the sweep stops working and your money stays in checking. The bank will notify you before closing an account and will tell you what happens to any balance in the savings account.