What a bank sweep does

A bank sweep is an automatic process that moves money between your accounts at the end of each business day. The bank moves funds from one account into another to serve a specific purpose — usually to cover overdrafts, earn interest, or meet a minimum balance requirement.

The sweep happens without you making a transaction each time. Once you set it up, the bank performs the same move every day or on a schedule you choose. You do not have to do anything after the initial setup.

Think of it like a safety net: if your checking account would go negative, the sweep pulls money from your savings account to prevent the overdraft fee. Or it works in reverse — moving extra money from checking into savings so it earns interest instead of sitting idle.

Key Takeaways

  • A bank sweep automatically moves money between your accounts on a schedule you set, usually daily or weekly.
  • The most common sweep prevents overdraft fees by moving money from savings to checking when the balance gets too low.
  • Some sweeps work the opposite way, moving excess money from checking into savings so it earns interest.
  • You control the sweep settings — the minimum balance that triggers it, which accounts it uses, and whether to turn it on or off.
  • Sweeps are free at most banks, though some charge a small fee if the sweep happens more than a certain number of times per month.

The two main types of sweeps

Overdraft protection sweeps prevent negative balances. You link a savings account or money market account to your checking account. If your checking balance falls below a threshold you set — say $500 — the bank automatically moves money from savings into checking to bring it back up. This stops overdraft fees, which typically cost $25 to $35 per incident.

Interest-earning sweeps work the opposite direction. Money sits in your checking account earning little or no interest. The sweep moves any balance above a certain amount into a savings or money market account, where it earns more. At the end of the day, if you have $5,000 in checking and you set the sweep threshold at $2,000, the bank moves $3,000 to savings overnight.

Some banks offer both types at once. Your checking account is protected from overdrafts, and any extra money automatically earns interest. You set separate thresholds for each direction.

How to set up a sweep at your bank

Log into your online banking portal or mobile app and look for "Transfers," "Sweep," or "Account Management." Most banks put the sweep option in the same place where you would set up a one-time transfer between accounts.

You will need to choose: which account the money comes from, which account it goes to, what balance triggers the sweep, and how often it runs. Most banks let you set it to daily, weekly, or on specific days. Then you confirm and save the settings.

If you cannot find the sweep option online, call your bank's customer service line. They can set it up over the phone or walk you through the steps. There is no charge to set up a sweep at most banks.

When a sweep costs money

Most banks do not charge for sweeps. However, some banks limit the number of free sweeps per month — often around four — and charge a small fee (usually $1 to $5) for each additional sweep.

This matters most if you set up an overdraft protection sweep and your balance dips below the threshold multiple times in a single month. If you are moving money frequently, ask your bank whether there is a limit and what the fee is.

Money market accounts sometimes have their own limits on transfers and withdrawals. If your sweep moves money into a money market account more than six times in a month, the account may be restricted or converted to a savings account. Check your account agreement or ask your bank about this rule before setting up a frequent sweep.

What sweeps do not do

A sweep does not create new money or increase your total balance. It only moves money you already have from one place to another. If you have $3,000 total across checking and savings, a sweep will not give you $3,500.

A sweep also does not prevent all overdraft fees. If you overdraw your account by more than the amount available in your linked savings account, the overdraft fee still applies to the shortfall. For example, if your checking account is $200 short and your savings account only has $100, the sweep covers $100 and you still owe a fee on the remaining $100.

Sweeps are not the same as overdraft protection through a credit line. Some banks offer overdraft protection that borrows money from a credit account instead of moving it from savings. That borrowed money costs interest, whereas a sweep from your own savings does not.

Turning a sweep off or changing it

You can change or cancel a sweep anytime through your online banking portal or by calling your bank. There is no penalty for turning it off.

You might turn off an overdraft protection sweep if you are trying to stick to a budget and want to feel the friction of a declined transaction rather than having the bank automatically bail you out. You might turn off an interest-earning sweep if you need to keep more money in checking for upcoming bills.

If you change banks, your sweep does not transfer. You will need to set up a new sweep with your new bank if you want the same protection or interest-earning behavior.

Frequently Asked Questions

Does a sweep affect my credit score?

No. A sweep moves money between your own accounts and does not show up on your credit report. It does not count as a loan, a credit inquiry, or a payment. Your credit score is not affected.

Can I set up a sweep between accounts at different banks?

Most sweeps only work between accounts at the same bank. If you want to move money between banks automatically, you would set up an external transfer instead, which usually takes one to three business days. Some banks offer faster external transfers, but they are not the same as a same-day sweep.

What happens if I set the sweep threshold too high?

If you set the overdraft protection threshold at $5,000 but your checking account regularly has $3,000, the sweep will move money from savings into checking almost every day. You might run down your savings faster than you expect. Start with a lower threshold — like your typical monthly bills — and adjust upward if needed.

Is a sweep the same as a transfer?

A transfer is a one-time move of money that you initiate manually. A sweep is automatic and repeats on a schedule. You can set up a transfer without a sweep, or a sweep without ever doing a manual transfer.

Can my bank change or cancel my sweep without asking?

Your bank cannot cancel a sweep you set up, but they can change the rules around how many free sweeps you get per month. If your bank changes its fee structure, they will notify you in writing. You can always turn off your sweep yourself if the new terms do not work for you.