Electronic Payment Processing Litigation Lawyer

Payments and Fintech Disputes

Payment processing disputes often arise when funds are withheld or delayed, reserves increase without explanation, and fees diverge from governing agreement or are revealed only through detailed analysis of merchant statements and reserve activity. Payment relationships then break down across multiple parties with competing claims to the same revenue.

System-Level Nature of Payment Disputes

In these situations, the dispute is not limited to whether funds were withheld or fees were charged. It turns on how payment systems are structured, how billing operates in practice, and how financial obligations are created, tracked, and enforced within processor and platform environments. These disputes often involve substantial sums, complex contractual relationships, and overlapping conduct across multiple parties.

Rome LLP is a litigation boutique focused on payments and fintech disputes. The firm represents merchants, platforms, ISOs, acquirers, and processors in payment processing disputes and related advisory matters.

The firm has recovered tens of millions of dollars in wrongfully withheld merchant funds and has handled complex payment processing disputes involving processors, acquiring banks, and financial institutions. Representative matters include a $16 million jury verdict in a dispute involving ISO residuals tied to a merchant processing nearly $300 million in transactions, as well as coordinated recovery efforts resulting in the return of more than $15 million in withheld platform reserves and merchant funds pre-litigation over a six-month period.

These matters require reconstruction of how payment systems operate across contracts, transaction data, and financial flows, including how outcomes are produced and where they diverge from governing agreements and applicable rules.

How Payment Processing Disputes Arise

Payment processing disputes rarely begin as litigation. They develop over time as operational and contractual issues accumulate, often turning on differences between how systems are configured, how they operate in practice, and how those operations are reflected in contractual terms and reporting.

How Operational Changes Trigger Disputes

A merchant’s transaction volume increases and reserve requirements change. A processor imposes additional fees or adjusts billing practices. An ISO or agent is removed from a relationship or disputes residual payments. Platform funds are held or delayed, or multiple agreements govern the same relationship, creating conflicting interpretations of rights and obligations.

External Activity and System Stress Events

In some cases, disputes arise from external activity affecting a merchant’s processing environment. For example, enumeration attacks and other automated transaction activity can generate high volumes of authorization attempts that result in processing fees, monitoring program exposure, and reserve holds that are not tied to ordinary commercial activity. These situations raise questions regarding the allocation of responsibility among merchants, processors, and acquiring banks, and require both technical and contractual analysis.

Platform-Controlled Payment Environments

In other cases, disputes arise within platform-based payment systems that require users to pre-fund internal accounts or “wallets” in order to access core functionality. These systems function as controlled payment environments in which the platform determines how funds are deposited, applied, and priced. Users may be required to maintain balances to continue operating, while having limited ability to withdraw funds or bypass the platform’s payment structure. Over time, these structures can create operational dependency, limiting the ability to shift payment methods or exit the platform without disruption. These dynamics can materially affect how fees are incurred, how funds are retained, and how disputes develop.

At this stage, the analysis focuses on agreements, transaction activity, and billing practices to identify the source of the dispute and the available paths to recovery or resolution.

Pre-Litigation Strategy and Fund Recovery

Brad Cebeci leads case development and claim structuring, focusing on recovering funds through coordinated pre-litigation efforts across accounts, counterparties, and contractual relationships. This includes analysis of fee structures, reserve handling, transaction data, and billing practices to identify improper charges and breaches.

Many disputes involving withheld funds, reserves, and fees can be resolved at this stage. The objective is to recover funds while preserving the ability to escalate where necessary.

This approach has resulted in substantial recoveries, including multi-million dollar outcomes achieved without formal litigation.

Litigation, Arbitration, and Class Actions

Where disputes cannot be resolved through pre-litigation efforts, they are advanced into litigation, arbitration, and, where appropriate, class actions.

Eugene Rome leads complex litigation through trial and arbitration, including disputes involving fraud, contractual breaches, and coordinated conduct affecting payment relationships. The firm has secured multiple multi-million dollar verdicts and arbitration awards in payment-related disputes and has litigated matters across the United States.

Brad Cebeci also develops and structures class actions challenging systemic billing practices and improper fee structures within the payments industry, including matters currently pending in multiple federal jurisdictions and approaching class certification.

Advisory and Risk Management Across the Payments Ecosystem

In addition to the dispute practice, Rome LLP advises institutional clients and high-volume merchants on recurring risks within the payments ecosystem.

This advisory work focuses on how disputes arise and can be mitigated through contract structure, operational practices, and compliance. This includes billing practices, reserve policies, merchant onboarding and underwriting, and the allocation of risk among participants in payment relationships. It also includes advising clients in connection with billing audits, internal reviews, and disputes arising from historical pricing, onboarding, and configuration issues.

MATCH Listings, Merchant Account Terminations, and Access to Processing

Access to payment processing is often as critical as fund recovery. A merchant’s ability to operate can be disrupted or eliminated entirely through termination decisions and MATCH listings, which are required under Mastercard rules in certain circumstances and must be reviewed by acquiring banks before onboarding.

MATCH listings and termination decisions often determine whether a merchant can continue operating. These issues are addressed through analysis of card brand rules, reason codes, and the conduct of acquiring banks and service providers.

Regulatory and Card Brand Considerations

Payment processing disputes frequently intersect with regulatory frameworks and card brand rules, particularly in matters involving high transaction volumes and consumer-facing programs.

These issues may arise under the FTC Act, ROSCA, and state consumer protection laws, as well as Visa and Mastercard rules governing billing practices, continuity programs, and risk management. These considerations often shape both the dispute and the available paths to resolution.