Frost Bank's Overdraft Coverage Options

Frost Bank offers overdraft protection through two separate programs: Overdraft Protection (which links a savings account or line of credit to cover shortfalls) and Overdraft Courtesy (which allows transactions to go through even when your balance is insufficient, then charges a fee). You do not automatically get both—you choose which one you want, or you can decline overdraft coverage entirely and have transactions simply decline at the point of sale.

If you have Overdraft Protection set up and a transaction would overdraw your checking account, Frost Bank transfers money from your linked savings account or credit line to cover it. This transfer typically happens immediately, and you pay no overdraft fee—only whatever interest rate applies to the credit line itself, if you borrowed from one. If you have Overdraft Courtesy but no Overdraft Protection, the transaction goes through anyway, and your account balance goes negative. Frost Bank then charges you an overdraft fee, usually $35 per transaction, though the exact amount depends on your account type and current terms.

Key Takeaways

  • Frost Bank allows overdrafts only if you have signed up for either Overdraft Protection or Overdraft Courtesy; without either, transactions decline when your balance is too low.
  • Overdraft Protection transfers money from a linked savings account or credit line to prevent the overdraft, with no overdraft fee charged.
  • Overdraft Courtesy lets the transaction go through and charges a $35 fee per overdraft, with your account balance going negative.
  • You can change or cancel your overdraft settings at any time through online banking, a branch visit, or by calling Frost Bank customer service.
  • Frost Bank typically allows your account to stay negative for a limited time before requiring you to bring it current or closing the account.

How Overdraft Protection Works

Overdraft Protection requires you to link a second account—usually a savings account at Frost Bank, or a line of credit—to your checking account. When a debit card transaction, check, or ACH payment would cause your checking balance to drop below zero, Frost Bank automatically transfers enough money from the linked account to cover the shortfall. The transfer happens in real time or within hours, depending on the transaction type.

You pay no overdraft fee when Overdraft Protection covers the transaction. However, if you borrowed from a credit line instead of a savings account, you will owe interest on the borrowed amount at whatever rate your credit line carries. If you transferred from savings, there is no interest cost, but your savings balance is now lower. Either way, you need to replenish the linked account eventually or you will run out of backup funds.

Overdraft Protection is the quieter option—it prevents your account from going negative in the first place. Many people set it up and forget about it, which means they do not notice spending patterns that would otherwise trigger overdraft fees. That can be a problem if you are trying to stay aware of your actual cash position.

How Overdraft Courtesy Works and What It Costs

Overdraft Courtesy (sometimes called overdraft privilege) allows a transaction to go through even when your checking account balance is insufficient. Your account balance goes negative, and Frost Bank charges you an overdraft fee—typically $35 per transaction, though some account types or promotional periods may have different amounts. The fee is charged to your account immediately or within one business day.

The cost adds up quickly. If you overdraft three times in one week, you are charged three $35 fees ($105 total) on top of whatever amount you actually overspent. Frost Bank may also charge a second fee if your account remains negative for several days—sometimes called a "sustained overdraft fee" or "extended overdraft fee"—though this varies by account type and current policy.

Overdraft Courtesy is the default for many Frost Bank customers, which means you may be paying overdraft fees without realizing you signed up for it. Check your account settings or call Frost Bank to confirm which overdraft option you have active.

Overdraft Limits and How Long You Can Stay Negative

Frost Bank does not publish a specific overdraft limit for Overdraft Courtesy, but most banks allow accounts to go negative by $100 to $500 before refusing further transactions. The actual limit depends on your account history, deposit patterns, and account type. Overdraft Protection has no limit beyond what your linked savings account or credit line can cover.

Your account cannot stay negative indefinitely. Frost Bank typically expects you to bring your account current within a few business days—usually three to five days, though the exact timeline is in your account agreement. If you do not deposit enough to cover the negative balance and any fees within that window, Frost Bank may close your account and report it to ChexSystems, a banking history database that other banks check when you try to open a new account.

If your account is closed due to a negative balance, you will also owe Frost Bank the full amount you owe them, and they may send it to a collection agency if you do not pay.

How to Set Up, Change, or Cancel Overdraft Coverage

You can manage your overdraft settings through Frost Bank's online banking portal, mobile app, or by visiting a branch in person. Log into your account, find the settings or preferences section (usually under "Account Services" or "Overdraft Settings"), and select which option you want: Overdraft Protection (and which linked account to use), Overdraft Courtesy, or no overdraft coverage at all.

If you do not see the option online, call Frost Bank's customer service line or visit a branch. A representative can walk you through the choices and make the change immediately. Changes usually take effect the same day or the next business day.

If you cancel overdraft coverage entirely, transactions will simply decline when your balance is too low. You will not be charged an overdraft fee, but you also will not be able to spend money you do not have. This is the safest option if you want to avoid overdraft fees altogether, though it means you may have a debit card declined at the checkout or a check bounce.

What Happens If You Overdraft Without Signing Up

If you did not intentionally sign up for overdraft coverage, you should not be charged an overdraft fee. However, Frost Bank may have enrolled you automatically when you opened your account, or you may have agreed to it without realizing it during the account setup process. Check your account agreement or call Frost Bank to confirm what you actually have.

If you were charged an overdraft fee and you believe you did not consent to overdraft coverage, you can dispute the fee. Contact Frost Bank's customer service, explain that you did not authorize overdraft protection, and ask them to reverse the fee. Many banks will reverse one or two fees as a courtesy, especially if you have a good account history. If Frost Bank refuses, you can file a complaint with the Consumer Financial Protection Bureau (CFPB), which oversees bank overdraft practices.

Alternatives to Overdraft Coverage

If you are paying overdraft fees regularly, overdraft coverage is not solving your problem—it is masking it. The real issue is that your spending exceeds your income, and overdraft fees are making it worse. Consider these alternatives instead:

  • Set up low-balance alerts. Most banks, including Frost Bank, let you receive a text or email when your balance drops below a certain amount. This gives you time to transfer money or adjust your spending before you overdraft.
  • Use a budget app or spreadsheet. Track your spending and your upcoming bills so you know exactly how much money you have available to spend each day.
  • Switch to a no-overdraft bank. Some online banks and credit unions do not offer overdraft coverage at all, which forces you to spend only what you have.
  • Build an emergency fund. Even $500 in a separate savings account gives you a buffer for unexpected expenses without relying on overdraft fees or credit.

Frequently Asked Questions

Can Frost Bank overdraft my account without my permission?

No. Federal law requires banks to get your written consent before charging overdraft fees. However, Frost Bank may have obtained that consent when you opened your account, and you may not remember agreeing to it. Check your account settings or call to confirm what you have active, and change it if you do not want overdraft coverage.

What is the difference between overdraft and a bounced check?

An overdraft means the transaction went through even though your balance was insufficient, and you were charged a fee. A bounced check means the check was rejected and did not clear. With Overdraft Courtesy, your check would go through and you would pay an overdraft fee. Without overdraft coverage, the check would bounce and the recipient would be notified that the check failed.

If I have Overdraft Protection, will I ever pay an overdraft fee?

Not from the overdraft itself, but you may pay interest if you borrowed from a credit line instead of transferring from savings. You could also be charged a fee if your linked account does not have enough money to cover the transfer—for example, if your savings account balance is too low.

How long does it take Frost Bank to reverse an overdraft fee?

If Frost Bank agrees to reverse a fee, it typically appears back in your account within one to three business days. If you dispute the fee through the CFPB, the investigation can take 30 to 60 days, and Frost Bank may or may not reverse it depending on the outcome.

Can I overdraft my savings account at Frost Bank?

Frost Bank does not typically allow overdrafts on savings accounts. Overdraft coverage applies only to checking accounts. If your savings account balance is insufficient, the transaction simply declines.