How to Block a Merchant From Charging Your Card: Debit, Credit, and Disputes

To block a merchant from charging your card, cancel the agreement with the merchant in writing, then tell your bank to stop the payment if it’s a debit card or file a billing dispute if it’s a credit card. Replace the card if charges keep coming. The order matters: blocking money from leaving your account does not cancel the underlying contract, and skipping the cancellation step can leave you owing a debt the merchant can send to collections.

Cancel With the Merchant First and Keep Proof

Before you involve your bank, tell the company directly that you are revoking permission for automatic payments. Most merchants have a cancellation path through their website, app, phone line, or email. You can stop autopay without necessarily ending the service itself, if that’s what you want.¹

Whatever method you use, get proof. A confirmation number, a dated email, a screenshot of the cancellation page. If the only option is a phone call, write down the date, time, and representative’s name. This documentation is what your bank will ask for if the charges continue and you have to escalate.

For high-value contracts, or merchants that have ignored earlier requests, send a cancellation letter by certified mail with return receipt requested. The return receipt gives you proof of delivery with the date and recipient signature.²

If you signed up online for a subscription or free trial that converts to a paid plan, the Restore Online Shoppers’ Confidence Act requires the business to give you a simple way to stop the recurring charges, and to have obtained your express consent before charging you in the first place.³ A merchant that makes cancellation unreasonably difficult can be reported to the FTC, and that same failure strengthens any later dispute you file.

Stopping Charges on a Debit Card or Bank Account

When the charge hits a debit card or pulls from your checking account by ACH, the Electronic Fund Transfer Act lets you stop it by notifying your bank. The merchant’s cooperation isn’t required. Your bank must act on your instruction.⁴

Stop Payment vs. Revoking Authorization

There are two different requests your bank can process, and the distinction matters. A stop payment order blocks a specific upcoming transfer; if the merchant resubmits the same charge, the bank must keep honoring the stop until you say otherwise. A revocation of authorization goes further: it tells the bank the merchant no longer has your permission to debit the account at all, and the bank must block every future charge from that merchant.⁴ Be specific about which you want.

What to Have Ready

Pull your latest statement and have these details in front of you:

Merchant name exactly as it appears on the statement, which may differ from the company’s common name.
The precise recurring charge amount.
The date the most recent charge posted.

Most banks accept stop payment requests through online banking or their mobile app. You can also call or visit a branch.

Timing, Written Follow-Up, and Fees

Notify your bank at least three business days before the next scheduled transfer for the stop to take effect.⁵ You can give notice by phone or in writing. If you call, there’s a catch: the bank can require you to send written confirmation within 14 days, and if you don’t, the oral order expires.⁴ Ask whether written follow-up is required and send it promptly if it is.

Expect a fee. Stop payment orders commonly run $25 to $35, though some accounts waive or discount it. Ask the cost before you submit.

How long the block lasts depends on the type of payment. A full revocation of authorization under the EFTA should permanently block the merchant from your account, but individual bank policies vary. Confirm with your bank how long their block stays in place and whether you need to renew it.

Disputing Charges on a Credit Card

Credit cards use a different route. Instead of a stop payment order, you file a billing error dispute under the Fair Credit Billing Act and Regulation Z. The advantage: this process can reverse charges that have already posted, which a stop payment order cannot do.

You Have 60 Days

You have 60 days from the date your issuer sent the statement containing the disputed charge to submit a written billing error notice.⁶ Send it to the specific billing disputes address your issuer designates, not the general payment address. Include your name, account number, and a description of the charge, including the date and amount.

Qualifying errors include charges you didn’t authorize, charges for goods or services you didn’t receive or accept, incorrect amounts, and computational errors.⁶ A subscription charge that continues after you canceled fits this framework, because the merchant no longer has your authorization.

How the Investigation Works

The issuer must acknowledge your dispute in writing within 30 days and resolve the investigation within two complete billing cycles, which cannot exceed 90 days.⁶ While the investigation is open, the issuer can’t try to collect the disputed amount or report it as delinquent. If the issuer finds a billing error, it must correct the charge and any related finance charges.

Replacing the Card

If the merchant won’t honor your cancellation, or if the card number has been compromised, requesting a replacement card with a new account number cuts off the old number directly.⁷ It’s often the cleanest option when other steps have failed.

Watch for the Automatic Billing Updater

A new number does not guarantee the charges stop. Both Visa and Mastercard run Automatic Billing Updater services that share your replacement card details with merchants who had recurring billing on the old card. The idea is to keep legitimate subscriptions running when a card is reissued, but it can also let a merchant you’re trying to escape resume charging the new number within a billing cycle or two.⁸

When you order the replacement, ask your bank to opt your account out of the automatic billing updater, or to flag the specific merchant. Not every bank offers a merchant-level option, so you may have to opt out entirely. Then watch your statements for two or three months to confirm the charges have actually stopped.

Digital Wallet Tokens

If you use Apple Pay, Google Pay, or another digital wallet, the tokens stored there may migrate to your new card automatically, which can let a merchant with a stored token keep charging you. After a replacement, open your wallet settings and remove any tokens linked to merchants you’re trying to block.

Your Liability for Unauthorized Charges

If the charge was unauthorized, how much you can be forced to pay depends on the type of card and how fast you reported it.

Debit Cards

Under Regulation E, your liability tiers with your reporting speed:

Report within two business days of learning of the loss: liability capped at $50 or the amount of unauthorized transfers before you notified the bank, whichever is less.
Report after two business days but within 60 days of the statement: liability can rise to $500.
Report after 60 days: you can be responsible for the full amount of unauthorized transfers that occur after the 60-day window closes, with no cap.⁹

The jump after 60 days is why reviewing bank statements promptly matters.

Credit Cards

Federal law caps liability for unauthorized credit card charges at $50, and only if certain conditions are met, including that the unauthorized use occurred before you notified the issuer. Once you report the card compromised, you have zero liability for anything charged afterward.¹⁰

In practice, most cardholders pay nothing. Visa and Mastercard both run zero-liability policies that go beyond the federal floor. Visa’s policy says cardholders will not be held responsible for unauthorized Visa transactions.¹¹ Mastercard’s covers unauthorized purchases in-store, by phone, online, and on mobile.¹² These network policies don’t apply to commercial cards or unregistered prepaid cards such as gift cards.

Why Canceling First Matters

A stop payment order or a new card number keeps money from leaving your account. Neither cancels the underlying contract. If you block charges while a valid service agreement is still active, the merchant can treat the unpaid balance as a debt.

From there, the merchant can refer the balance to a collection agency. Collection accounts can show up on your credit report and damage your score, even if the original subscription was never reported to the bureaus. Canceling in writing before you block the payment removes the merchant’s argument that you still owe for an active contract.

If you’ve already canceled and the merchant is charging anyway, blocking the payment carries much less risk. Your cancellation records show you ended the agreement, which protects you if the merchant tries to collect or challenge a chargeback. For a subscription you signed up for online, a merchant’s failure to provide a simple cancellation mechanism may itself violate federal law, which gives you added grounds to resist any collection attempt.³

1
Consumer Financial Protection Bureau. How Do I Stop Automatic Payments From My Bank Account?
2
USPS. Return Receipt – The Basics
3
Office of the Law Revision Counsel. 15 USC 8403 – Negative Option Marketing on the Internet
4
Consumer Financial Protection Bureau. Section 1005.10 Preauthorized Transfers
5
Office of the Law Revision Counsel. 15 USC 1693e – Preauthorized Transfers
6
Consumer Financial Protection Bureau. Section 1026.13 Billing Error Resolution
7
Visa. Reporting Stolen and Lost Credit Cards
8
Mastercard Developers. Automatic Billing Updater
9
Consumer Financial Protection Bureau. Section 1005.6 Liability of Consumer for Unauthorized Transfers
10
Office of the Law Revision Counsel. 15 USC 1643 – Liability of Holder of Credit Card
11
Visa. Zero Liability
12
Mastercard. Mastercard Zero Liability Protection Policy