Can an MCA Funder Control Your Merchant Processing or Lockbox? Seven Questions

Not directly, no. Your processor and bank account and lockbox are not actually owned or controlled by the funder, so the funder cannot unilaterally lock you out. But the funder can mail an “assignment notice” to your credit card processors, customers and insurers, demanding that they start paying the funder instead. And some processors will simply lock you out of your merchant account or hold any funds they have.

That notice is also known as a “demand letter.” It says that it purchased rights to some or all of your future receivables, and it now has the right to be paid for the receivables that it purchased. It claims that under UCC Section 9-406, that right includes the right to tell any party who owes you money to pay them instead of you. A demand letter to a merchant processor can be quite disruptive, if you rely on card sales. In some cases, the processor will hold any money it has and ask for documents. It may restrict your merchant account. It may not pay you until it figures out what to do.

When the Law Allows the Funder to Demand Payment

So the real question is when the law allows the funder to demand payment from other people. UCC Section 9-607 says that the funder, as a secured party, gets two bites at the apple here. It can tell your customers to pay the funder, either once you have agreed to that arrangement, or after you have defaulted. Once the payer gets that notice, though, the law says that paying you would not amount to paying its debt.

If the funder is not your bank, it cannot by itself impose lockbox access on you. It can control your deposit account if one of three things are true. It could be the bank itself, or it might have a signed three-way agreement with you and the bank that lets it tell the bank to pay it instead of you, without your consent. Or it might be the bank’s customer for that account.

Like a demand letter, the funder’s control powers over your bank do not kick in unless you have agreed to them in the first place, or else until after you have defaulted. Texas law since September 1, 2025 no longer lets the funder set up automatic debits on the account unless it has a perfected, first-priority security interest in that account.

Customer or Insurer

Customers and insurers may react differently to a demand letter or assignment notice. They may doubt the assignment was legal, or may not know who to pay to avoid breaching their deal with you. As a result, they may hold the money until they figure out what to do. That may keep you from getting paid. If a few big customers or insurers pay you most of your revenue, then their confusion can cripple your business until the issue gets resolved.

If you are a general contractor or sub, for example, and most of your work comes from one large developer, then a demand notice could cause you not to be paid until the developer gets the issue sorted out. Medical and dental offices and therapy practices also face this issue because they often rely on insurance payments for revenue. Medicare payments have federal limits on assignment, which can affect attempts to redirect them. A clause in your customer contract banning assignment of payments generally does not stop the notice.

An assignment notice or “demand letter” is not by itself proof that a funder owns your receivables. A payer can still ask the funder for proof. It can keep paying you until it gets that proof. If the funder gives a notice of assignment to a customer or insurer, it cannot force them to believe the funder’s claim of ownership simply because it filed a UCC-1.

Whether a demand letter threatens your ability to collect receivables depends a lot on who else has a secured interest in them. If a bank or SBA lender, for instance, took a security interest in your receivables that was recorded ahead of the assignment to the funder, then it may have priority over the funder. Lien priority does not always go by who filed their interest first, though. There are rules on perfection, and on what collateral each takes a lien on, that will decide the outcome.

Either way, a processor hold is a stopgap, not the final word. There are options here. You can challenge the demand notice. You can give the processor more info about your agreement with the funder. You can try to settle with the funder. That deal can include it sending a retraction to the processor. There is no fixed rule saying a set amount of the money held will go to the funder. Filing bankruptcy freezes collection and lien enforcement.

A demand letter or assignment notice is not the only thing the funder has on its side. It can also sue for breach of contract. It might also sue the person who signed the guaranty. What a collection caller says is not proof the remedy it names is really available.

Gather everything up. Keep every piece of paper, every phone message and e-mail. That includes the MCA agreement, any guarantees, UCC filings, bank statements, and payment records. Make a copy of every notice your customers or processors got, and keep all court papers. Do not ignore a lawsuit that comes. A missed deadline lets the funder seek a default judgment. Even a friendly collector does not mean no lawsuit is coming.

Be careful making a partial payment to the funder if you have not settled the balance in writing. Without that, it is unclear how payments will be applied, whether fees keep adding up, and whether you are still in default. The balance may not drop at all.

Keeping all the paperwork in one place lets a lawyer know what rights the funder has under your deal, and whether others also have a lien on your property. It shows what defenses apply, and whether you have a good shot at settlement or restructuring your debt. The sooner you get legal advice, the more time there will be to understand the strengths and weaknesses of the case.