How Do Bank Disputes Work? Filing, Timelines, and Outcomes

Bank disputes work through a federal process under Regulation E: you tell your bank about an error on your account within 60 days of the statement that shows it, and the bank generally has 10 business days to investigate. If it needs more time, it must put the money back into your account provisionally while it keeps looking. How quickly you report the problem is the single biggest factor in how much you could lose, so the clock matters more than almost anything else about the dispute.

What You Can Dispute

Regulation E covers electronic transactions on your account: debit card purchases, ATM withdrawals, direct deposits and withdrawals, and transfers you initiate by phone or online.¹ The errors you can raise include unauthorized transfers, wrong amounts, transactions that appear on your statement but never happened (or should appear and don’t), computational mistakes, and a bank’s failure to send you a required periodic statement.

Person-to-person payment apps tied to your bank, like Zelle, are included when the transfer meets the definition of an electronic fund transfer. If someone gets into your bank’s P2P app and pushes money out, that counts as unauthorized. So does a transfer initiated by someone who tricked you into handing over your login credentials through a phishing call or fake text — because someone other than you initiated it, the bank must treat it as unauthorized.²

Some things are outside this process. Paper checks aren’t covered, even if processed electronically. Neither are wire transfers or securities transactions. Credit card charges are handled under a separate federal law with different deadlines and stronger caps on your liability.³ If your problem falls in one of these categories, you’ll need a different channel — usually your bank’s fraud department or, for a credit card, your card issuer.

Why Reporting Speed Determines What You Lose

For unauthorized debit card transactions, your financial exposure depends entirely on how fast you notify the bank, and the tiers are steep:

Report within 2 business days of learning your card was lost, stolen, or misused: your liability is capped at $50, or the amount taken before you reported, whichever is less.⁴
Report after 2 business days but within 60 days of the statement: liability jumps to $500.⁵
Report more than 60 days after the statement date: you could lose everything the thief takes after that 60-day window, with no cap, if the bank can show it could have stopped the losses had you reported sooner.⁵

Past the 60-day mark, the bank has no obligation to investigate at all.⁶ Check your statements often, and call the moment something looks wrong.

How to File the Dispute

You have 60 days from the date the bank sent the statement showing the error. A phone call is enough to start the process — the bank must begin investigating as soon as it receives oral notice and cannot wait for you to put anything in writing.⁶ The bank can ask you to follow up in writing within 10 business days, though, and if you don’t, it may withhold provisional credit while it investigates.

Whatever form of notice you use, include your account number, the date and dollar amount of the disputed transaction, and why you believe it’s an error. Most banks have dispute forms available online or in branches. Before you call, pull together anything that supports your account: screenshots, merchant receipts, cancellation emails, chat logs showing you tried to resolve the issue with the merchant. None of this is legally required, but it strengthens your case and speeds the review.

If you mail written notice, use certified mail with a return receipt and send it to the address the bank designates for billing disputes, which is often different from its general correspondence address. That receipt is your evidence you met the 60-day deadline if the bank later argues you were late.

What the Bank Must Do

Once your bank has notice, it has 10 business days to investigate and reach a conclusion.⁶ If it can’t finish in that window, it has to provisionally credit the disputed amount, plus any lost interest, to your account and keep investigating. It then has two business days to tell you the credit has been applied. You can use those funds normally while the review continues.

How long the full investigation can run depends on the type of transaction:

Standard transactions: 10 business days to investigate, extendable to 45 days with provisional credit.
Point-of-sale debit card transactions: up to 90 days total.⁷
International transfers: up to 90 days.
New accounts, where your first deposit was within the last 30 days: up to 90 days, and the bank gets 20 business days instead of 10 before it must provide provisional credit.⁶

That new-account exception is worth knowing because it’s the one scenario where you might wait nearly a month for provisional credit. Banks sometimes move slowly on new-account disputes precisely because the regulation gives them more room.

How the Dispute Ends

If the bank confirms an error, the provisional credit becomes permanent. Any fees the error triggered, such as overdraft or returned-payment charges, must be reversed too.

If the bank concludes no error occurred, it has to send you a written explanation of its findings and tell you that you can request copies of the documents it relied on. It will then debit the provisional credit from your account. After that debit, the bank must continue honoring checks and preauthorized transfers from your account, without charging overdraft fees, for five business days.⁸ That buffer keeps payments you scheduled while the provisional credit was in your account from bouncing.

Always ask for the investigation documents if your claim is denied. Denials sometimes rest on thin evidence: a signature that doesn’t match, a geolocation ping near the merchant, a finding that the card’s chip was used. Seeing the bank’s reasoning lets you decide whether to push back.

If the Bank Doesn’t Follow the Rules

If your bank ignores your dispute, skips required provisional credit, or runs a sham investigation, federal law gives you leverage. Under the Electronic Fund Transfer Act, you can recover the money you actually lost because of the bank’s failures, plus statutory damages of $100 to $1,000 per violation even if your actual losses were smaller, plus attorney’s fees and court costs if you win.⁹

A court can award triple your actual damages if the bank failed to provide provisional credit within 10 business days and either didn’t conduct a good-faith investigation or had no reasonable basis for denying the error. Triple damages also apply when the bank knowingly and willfully concluded your account wasn’t in error when the evidence didn’t support that conclusion.¹⁰

Before court, try the Consumer Financial Protection Bureau. The CFPB enforces Regulation E and can sometimes get action where your own calls to customer service couldn’t. You can file a complaint online in about 10 minutes or by phone at (855) 411-2372, Monday through Friday, 8 a.m. to 8 p.m. Eastern. The CFPB forwards your complaint to the bank, which generally responds within 15 days. Your complaint is also published, without your identifying information, in the CFPB’s public database. After the bank responds, you have 60 days to review the answer and give feedback. It’s not a lawsuit, but banks take these seriously because patterns of complaints can invite regulatory scrutiny.¹¹

1
Office of the Law Revision Counsel. 15 U.S. Code 1693a – Definitions
2
Consumer Financial Protection Bureau. Electronic Fund Transfers FAQs
3
Office of the Law Revision Counsel. 15 U.S. Code 1666 – Correction of Billing Errors
4
Consumer Financial Protection Bureau. 12 CFR 1005.6 – Liability of Consumer for Unauthorized Transfers
5
eCFR. 12 CFR 205.6 – Liability of Consumer for Unauthorized Transfers
6
Consumer Financial Protection Bureau. 12 CFR 1005.11 – Procedures for Resolving Errors
7
eCFR. 12 CFR Part 205 – Electronic Fund Transfers (Regulation E)
8
eCFR. 12 CFR 205.11 – Procedures for Resolving Errors
9
Office of the Law Revision Counsel. 15 USC 1693m – Civil Liability
10
Office of the Law Revision Counsel. 15 U.S. Code 1693f – Error Resolution
11
Consumer Financial Protection Bureau. Learn How the Complaint Process Works