Consultoria

Auditoria de pilha de pagamentos

Compreenda o estado atual da sua infraestrutura de pagamentos com a Auditoria de Pilha de Pagamentos da Cardflo. Fornecemos uma avaliação objetiva dos seus sistemas existentes, identificando áreas para otimização, redução de custos e melhoria de desempenho.

Esta auditoria estabelece uma linha de base clara para futuras decisões estratégicas de pagamento.

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A visão geral

A payment stack audit involves a systematic review of the technical and financial layers within a merchant's transaction lifecycle. This process examines the integration between the gateway, the merchant identification (MID) structure, and the downstream acquirers to identify latency, redundancy, or technical fragility.

Beyond the basic connectivity, the audit assesses the logic governing routing, 3D Secure (3DS) implementation, and fraud filter sensitivity.

By reviewing historical transaction data and decline reason codes, an organisation can determine whether failures stem from technical integration issues, issuer-side risk appetites, or regional compliance hurdles.

The audit functions at the intersection of treasury, engineering, and compliance, ensuring that scheme rules are met while minimising the total cost of acceptance.

This review provides a concrete map of the current architecture, highlighting where fragmentation in the stack leads to inefficient settlement cycles or excessive scheme fees that erode margins in high-volume environments.

Como funciona

  1. Gateway and Acquirer Mapping

    The auditing process begins by documenting every connection point between the checkout interface and the final settlement account. This includes identifying all active gateways, primary and backup acquirers, and any third-party processors.

    Consultants verify if the current geographic footprint of acquirers aligns with the merchant's actual customer base to reduce cross-border fees.

  2. Data and Error Analysis

    Auditors extract raw transaction logs to analyse the ratio of hard declines to soft declines. By categorising refusal reasons, such as insufficient funds versus suspected fraud or technical timeouts, patterns emerge regarding the health of the integration.

    This step pinpointing where valid transactions are being incorrectly blocked by aggressive risk settings.

  3. Commercial and Fee Review

    A granular review of the fee structure is conducted, typically focusing on interchange levels, scheme fees, and any blended pricing markups.

    The audit checks for consistency between the agreed Merchant Service Charge (MSC) and the actual debits from settlement files, ensuring that the merchant is not overpaying for non-qualified transactions.

  4. Compliance and Security Assessment

    The audit evaluates the implementation of Strong Customer Authentication (SCA) under PSD2 and the current status of PCI DSS compliance.

    This includes reviewing how payment card data is vaulted and whether the merchant utilises network tokens to maintain security whilst reducing the risk of data breaches or non-compliance penalties.

  5. Reporting and Strategy Formulation

    Findings are synthesised into a technical roadmap that prioritises remediation efforts based on potential impact. This includes suggesting adjustments to retry logic, proposing the consolidation of redundant MIDs, or recommending specific acquirers that demonstrate higher authorisation rates for particular Merchant Category Codes (MCCs) or regions.

Por que importa

Reduction in Operational Overheads

Many businesses accumulate payment vendors due to expansion or legacy requirements, resulting in fragmented reporting and manual reconciliation processes. A payment stack audit identifies these redundancies, allowing teams to consolidate infrastructure.

This reduction in complexity lowers the administrative burden on finance departments and reduces the technical debt associated with maintaining multiple, often outdated, API integrations.

Authorisation Rate Optimisation

Small discrepancies in how data is passed to the issuer can lead to higher decline rates. An audit detects missing or poorly formatted fields in the authorisation request, such as incorrect address verification (AVS) or card verification value (CVV) data.

Correcting these technical errors directly improves the success rate of legitimate transactions, impacting the bottom line without needing additional marketing spend.

Identification of Hidden Costs

Payment processing statements are notoriously opaque. An audit breaks down the effective cost of each transaction, exposing hidden margins or misapplied interchange rates.

By understanding the true cost of acceptance across different card types and regions, businesses can renegotiate contracts with processors or switch to an interchange-plus-plus model that offers greater transparency.

Casos de uso

Cross-border Expansion

Merchants moving into new territories use an audit to determine if their current UK or European acquirers can support local payment methods and competitive FX rates in the target market.

Post-Merger Integration

Following an acquisition, an organisation may find itself with multiple disparate payment gateways. An audit provides a blueprint for consolidating these systems into a unified payment orchestration layer.

High Decline Rate Remediation

A merchant experiencing a sudden spike in 'Do Not Honour' codes may use an audit to investigate if their MCC is misclassified or if their 3DS configuration is failing.

Contract Renewal Preparation

Before entering negotiations with a PSP, a merchant conducts an audit to gain a precise understanding of their volume profiles and transaction patterns to secure better commercial terms.

Em números

2% to 5%
Authorisation Uplift

Typical improvement seen when technical errors and suboptimal routing are corrected following a thorough stack review, depending on the baseline maturity.

10% to 20%
Potential Cost Savings

Industry range for reduction in processing fees when merchants transition from blended models to transparent pricing or consolidate redundant providers.

15% to 30%
False Positive Reduction

Standard reduction in legitimate transactions blocked by fraud filters after refining risk thresholds and rule sets during an audit process.

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O que obtém com Auditoria de pilha de pagamentos

  • Revisão abrangente dos gateways de pagamento e adquirentes existentes.
  • Análise das taxas de sucesso de transações e códigos de recusa.
  • Avaliação das ferramentas de prevenção de fraude e da sua eficácia.
  • Avaliação da adesão à conformidade, incluindo PCI DSS e 3DS.
  • Identificação de processos redundantes e ineficiências de custos.
  • Recomendações para atualizações tecnológicas e parcerias estratégicas.
  • Comparison of settlement timeframes across acquirers to improve corporate cash flow and working capital.
  • Assessment of alternative payment method (APM) penetration and its impact on the total checkout conversion.
  • Investigation of partial authorisation support and its effectiveness for specific retail or service sector merchants.
  • Validation of merchant descriptor accuracy to reduce customer confusion and subsequent retrieval requests.
See Auditoria de pilha de pagamentos on your acquiring stack.

A short scoping call, then a written plan for your MIDs.

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Perguntas sobre Auditoria de pilha de pagamentos

O que está envolvido numa Auditoria de Pilha de Pagamentos?

Uma Auditoria de Pilha de Pagamentos envolve uma análise detalhada da sua infraestrutura de pagamentos atual, incluindo gateways, adquirentes, ferramentas de fraude e processos internos.

Avaliamos o desempenho, a eficiência de custos e a conformidade para fornecer uma visão geral abrangente e recomendações acionáveis para melhoria.

Quanto tempo demora uma Auditoria de Pilha de Pagamentos?

A duração de uma Auditoria de Pilha de Pagamentos varia com base na complexidade e escala das suas operações. Tipicamente, uma auditoria pode ser concluída dentro de 2 a 4 semanas, desde a recolha inicial de dados até à apresentação do relatório final.

Fornecemos um cronograma personalizado após uma consulta inicial.

Quais são os benefícios de uma Auditoria de Pilha de Pagamentos?

Os benefícios incluem a identificação de oportunidades para redução de custos, melhoria das taxas de sucesso de transações, reforço da proteção contra fraude e garantia de conformidade regulamentar.

A auditoria fornece um roteiro claro para otimizar a sua estratégia de pagamento e alcançar maior eficiência operacional em todo o seu ecossistema de pagamentos.

Is a payment stack audit required for PCI DSS compliance?

While not a formal requirement for PCI DSS certification itself, a payment stack audit often uncovers security gaps that would impede certification.

It examines how sensitive data flows through the environment and whether the merchant is successfully offloading risk via hosted payment pages or iframe integrations.

By identifying exactly where primary account numbers (PAN) are being handled, the audit ensures that the merchant's PCI DSS scope is as narrow as possible, reducing the cost of annual assessments.

How frequently should a large-scale enterprise perform a payment audit?

It is generally advisable to perform a full audit annually or after any significant change to the infrastructure, such as adding a new gateway or expanding into a new continent.

Frequent audits are particularly important in the context of changing regulations such as PSD3 or updates to scheme rules introduced by Visa and Mastercard.

Regular reviews ensure that the payment stack remains optimised against shifting benchmarks in authorisation rates and that the commercial terms remained aligned with the merchant's current processing volume.

What role does Merchant Category Code (MCC) analysis play in the audit process?

The MCC is a primary factor in determining the interchange rates applied by schemes. An audit verifies that the merchant's business activities are correctly classified.

Misclassification can lead to higher interchange costs or increased scrutiny from acquirers, which can result in higher decline rates or even fines.

In some cases, a merchant may be eligible for a lower-cost MCC if their business model has shifted, and an audit identifies these opportunities to re-classify and save on every transaction.

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