You signed an authorization. You permitted a merchant cash advance company to withdraw funds from your business account on a recurring basis. And now you want it to stop. The question that keeps you awake is whether you have the legal right to revoke what you already granted, and what happens in the twelve hours after you do.
The answer is more favorable than most business owners assume. But the distance between possessing a right and exercising it without harm is measured in details that matter enormously.
You Can Revoke ACH Authorization at Any Time
Under NACHA Operating Rules Section 2.3.2, the authorization you provided for recurring ACH debits can be revoked unilaterally. No permission from the MCA company is required. No advance notice period is mandated by the banking rules themselves. The right is absolute in its existence and immediate in its availability.
The revocation must be in writing. It must identify the originator by name and company ID, specify the account number, and state that all future debit authorizations are revoked effective immediately. Send it to the MCA company by certified mail and by email simultaneously. Send a separate written instruction to your bank directing it to reject all future ACH debit entries from the identified originator.
That is the mechanical process. It works. The withdrawals will stop. What follows from that cessation is a different question entirely.
Your Bank Is Obligated to Honor a Stop Payment Order
Separate from the authorization revocation you send to the funder, your bank has an independent obligation to honor a stop payment order on ACH debits. Under UCC Section 4-403, a customer may order the bank to stop payment on any item drawn on the customer’s account. For commercial accounts, the stop payment order is effective if received in time for the bank to act on it before processing the transaction.
Some banks resist. The resistance is not legal. It is institutional. Banks that maintain relationships with MCA funders, or banks whose compliance departments are uncertain about the commercial ACH framework, will occasionally tell you that they cannot block the debits. They can. If your bank refuses a properly submitted stop payment order, escalate the matter to the bank’s compliance officer in writing and, if necessary, file a complaint with the Office of the Comptroller of the Currency or your state banking regulator.
A business owner in the garment district told me in February that his bank had refused a stop payment order three times before he submitted it in writing with a citation to the UCC provision. The bank processed it the same afternoon.
Revocation Does Not Eliminate the Underlying Debt
This is the fact that most articles about stopping MCA payments either bury or omit. Revoking ACH authorization stops the withdrawal mechanism. It does not discharge the obligation. If the MCA agreement is a valid purchase of future receivables, you still owe the purchased amount less whatever has already been remitted. If the agreement is a disguised loan, you still owe the principal plus whatever interest a court determines to be lawful.
The debt survives the revocation. The funder’s ability to collect that debt through litigation, UCC lien enforcement, personal guarantee claims, and in some jurisdictions confession of judgment filings, also survives. Revocation without a strategy for addressing the underlying obligation is a temporary measure, not a resolution.
Most MCA Contracts Treat Revocation as Default
Examine the default provisions in your agreement. In nearly every MCA contract I have reviewed, the merchant’s interference with the funder’s ability to collect the daily payment constitutes an event of default. Revocation of ACH authorization falls within that definition. So does instructing your bank to block the debits.
Default triggers acceleration. The funder declares the entire remaining balance immediately due and payable. If you signed a personal guarantee, and most MCA agreements require one, your personal assets become subject to collection. If the agreement contains a confession of judgment clause and you are located in a jurisdiction where such clauses remain enforceable, the funder can file it and obtain a judgment without notice to you.
This does not mean revocation is unwise. It means revocation without legal preparation is unwise. The default provision is a contractual term, and contractual terms are subject to challenge, negotiation, and judicial review. An attorney can evaluate whether the default provision is enforceable in your jurisdiction and structure the revocation as part of a broader defensive strategy.
The 2026 NACHA Monitoring Rules Do Not Change Your Rights
New NACHA rules that took effect in March 2026 imposed enhanced fraud monitoring obligations on originators and third party processors handling high volumes of ACH transactions. Some MCA funders have cited these rules to merchants as though they alter the merchant’s right to revoke authorization. They do not.
The 2026 rules address the originator’s obligation to monitor for unauthorized transactions, not the customer’s right to terminate authorization. Your right to stop the debits remains exactly as it was. The funder’s suggestion otherwise is, at best, a misreading of the regulation. At worst, it is a deliberate misrepresentation designed to discourage you from exercising a right that the funder finds inconvenient.
Do not accept legal interpretations from the entity that profits from your continued payment.
Timing and Sequence Determine Outcome
The difference between a revocation that preserves your position and one that worsens it is almost entirely a matter of timing and sequence. Revoking authorization the same day you retain counsel, file a reconciliation demand, and challenge the agreement’s characterization as a purchase produces a different result than revoking authorization on a Friday afternoon with no legal strategy in place and no communication to the funder.
In the first scenario, the revocation is one component of a coordinated legal position. The funder’s declaration of default is met with a response that challenges the default provision, asserts counterclaims, and positions the dispute for negotiation or litigation. In the second scenario, the revocation is a panicked reaction that hands the funder a contractual basis for immediate enforcement without any corresponding protection for you.
One of the quieter truths about MCA defense is that the merchants who achieve the best outcomes are not the ones who acted fastest. They are the ones who acted in the correct order.
The right to stop MCA debits from your account is real, it is immediate, and it is yours. The exercise of that right within a strategy that accounts for the contractual, financial, and litigation consequences is what separates a decision you will be glad you made from one that compounds the problem. Our office handles these matters routinely, and the initial consultation carries no fee. A single conversation can clarify whether revocation is the right step and, if so, how to take it.
