Yes, you can dispute an ACH debit from your checking account, but the window to do it is narrow and the process depends on whether you authorized the payment at all.
An ACH (Automated Clearing House) debit is a transfer of money out of your account initiated by another person or business. If you see one you don't recognize or that was processed incorrectly, you have the right to dispute it—but you must act within a specific timeframe. The Federal Reserve and your bank set the rules for how this works, and the speed of resolution depends on whether the payment was truly unauthorized or straightforward wrong.
The key distinction is this: if someone had your permission to take money but took the wrong amount or took it twice, that's a different dispute than if they never had permission at all. Your bank treats these differently, and the timelines are not the same.
Key Takeaways
- You have up to 60 days from the date the ACH posted to your account to report an unauthorized debit to your bank.
- If the payment was authorized but processed incorrectly—wrong amount, duplicate charge, wrong date—you should contact the company that initiated it first, as your bank may require proof you tried to resolve it directly.
- Your bank must investigate and either reverse the charge or explain in writing why it was valid within 10 business days of receiving your dispute.
- If your bank finds the charge was unauthorized, the money goes back into your account; if they find it was authorized, you may owe it back to them later if the original company challenges the reversal.
The 60-day window for reporting unauthorized ACH debits
The moment an ACH debit posts to your account, a clock starts. You have 60 calendar days from that posting date to report it as unauthorized to your bank. This is a federal requirement under Regulation E, which governs electronic fund transfers. If you wait longer than 60 days, your bank is not required to investigate, and you lose your right to dispute it.
The posting date is not the date you noticed it—it is the date it actually cleared your account. Check your statement or online banking to see when the transaction settled. If you discover an unauthorized debit on day 65, you are outside the window. This is why monitoring your account weekly matters: the sooner you spot it, the sooner you can report it.
How to report the dispute to your bank
Contact your bank directly—by phone, in writing, or through your online banking portal. Most banks have a disputes or fraud department. You will need to provide the transaction date, the amount, the name of the company that initiated the debit, and a clear statement that you did not authorize it. Some banks require written notice; others accept phone reports but will send you a written confirmation to sign and return.
Do not assume an email to customer service counts as an official dispute. Ask the bank explicitly whether your report is being logged as a formal dispute under Regulation E. Get a reference number and the name of the person handling it. Write down the date and time you reported it. If your bank later claims they never received the dispute, you will have proof you contacted them within the 60-day window.
What happens after you report the dispute
Your bank must investigate within 10 business days of receiving your dispute report. During this time, they will contact the company that initiated the ACH debit and ask them to provide proof that you authorized it. The company will either produce authorization documents—a signed agreement, a recorded call, an email consent—or they will not.
If the company cannot prove authorization, your bank must reverse the charge and credit your account within one business day of concluding the investigation. If the company does produce proof of authorization, your bank will deny the dispute and notify you in writing. You will have the right to request the authorization documents so you can see what was signed or recorded.
Disputes over incorrect amounts or duplicate charges
If you authorized the ACH debit but the company charged you the wrong amount or charged you twice, this is a different kind of dispute. Contact the company that initiated the debit first. Explain the error clearly: "I authorized a $50 debit on March 15, but you charged $100" or "You charged me twice for the same service on the same day."
Many companies will reverse the incorrect charge when ready once you point out the error. If they refuse or do not respond within a few days, then contact your bank and report it as an error rather than an unauthorized transaction. Your bank will still investigate, but the company will have an easier time proving you authorized the original debit—they will just have to explain why the amount was wrong. The outcome is usually the same (the overcharge gets reversed), but the process is faster when the company cooperates.
What happens if your bank reverses the charge and the company disputes it
When your bank credits your account after finding the debit unauthorized, that is not always the end. The company that initiated the debit can challenge the reversal. They will submit their own evidence—a signed agreement, a recorded authorization, a contract—to their bank. If they do, the money may be pulled back out of your account again while the banks sort it out.
This is called a chargeback dispute or a representment. It can take weeks or months to resolve. During this time, your account may show the credit, then lose it, then regain it. Keep all your own documentation: emails, screenshots of your account, any correspondence with the company. If the company ultimately wins the dispute, your bank will debit your account again for the full amount, and you will have to pursue the matter with the company directly through small claims court or a credit card chargeback (if you paid with a card instead of a bank account).
Preventing unauthorized ACH debits in the future
ACH debits require authorization, but the bar for what counts as authorization is lower than many people realize. A signed contract, a recorded phone call, a written email, or even a checkbox on a website can all serve as proof. Before you authorize any company to debit your account, read what you are signing. Look for language like "I authorize [Company Name] to debit my account" or "recurring payment" or "automatic withdrawal."
If you want to stop a company from debiting your account in the future, you can revoke authorization by sending them a written request. Keep a copy. You can also contact your bank and ask them to block ACH debits from that company, though this is less reliable than revoking authorization directly. Some banks offer tools to set spending limits or require approval for certain types of transactions, which can add a layer of protection.
Frequently Asked Questions
What if I report the dispute after 60 days?
Your bank is not required to investigate disputes reported after 60 days from the posting date. You can still contact the company and ask them to reverse the charge, but you lose your federal protection. Some banks may investigate anyway as a courtesy, so it is worth asking, but do not count on it.
Can I dispute an ACH debit if I authorized it but changed my mind?
No. Changing your mind after authorizing a payment is not grounds for a dispute. You authorized the company to debit your account, so the debit is valid. Your only option is to contact the company and ask for a refund, or to revoke authorization for future debits.
How long does it take to get my money back?
If your bank finds the debit unauthorized, they must credit your account within one business day of concluding the investigation. The investigation itself takes up to 10 business days. If the company challenges the reversal, the timeline extends significantly—sometimes weeks or months—while the banks exchange evidence.
Do I need to file a police report for an unauthorized ACH debit?
No. An unauthorized ACH debit is a civil matter between you, your bank, and the company. You do not need to file a police report unless you believe you are the victim of identity theft or fraud affecting multiple accounts or institutions. Your bank's dispute process is the correct channel.
What if the company says I authorized the debit but I have no record of it?
Your bank will ask the company to produce the authorization. If they cannot, your bank must reverse the charge. If they can—even if you do not remember signing or agreeing—the debit is valid. This is why it is important to keep records of what you authorize and to review your statements regularly.