Top 10 Best Banking Audit Services of 2026

PwC’s banking audit delivery typically centers on risk-based audit planning that links identified risks to control testing and substantive testing on major balances and disclosures. Engagement execution is designed around audit evidence quality and working-paper standards, with banking-specific attention to reconciliation cycles, loan-level risk drivers, and credit loss estimation processes. For regulatory compliance audit work, PwC’s approach usually connects testing results to supervisory expectations, then translates outcomes into remediation plans and follow-up evidence for governance committees.

A common tradeoff is that the documentation and governance rigor that supports regulator-ready audit files can increase coordination burden for bank stakeholders. PwC fits usage situations where audit scope spans both business processes and systems, such as core banking system audit plus IT general controls testing, and where leadership wants a consistent audit approach across multiple legal entities.

BDO fits audit teams that need coordinated coverage across financial reporting, regulatory compliance, and key risk domains like credit, liquidity, and model governance. Its delivery commonly includes walkthroughs, control testing, and substantive testing with working paper outputs built to support both audit conclusion and regulatory scrutiny. For banks with complex systems landscapes, BDO’s IT general controls audit coverage helps connect business process evidence to application and infrastructure control operation.

A tradeoff is that deep coverage breadth depends on early scoping of in-scope entities, processes, and systems due to how auditors sequence fieldwork and evidence requests. BDO performs best when leadership can provide timely access to general ledger and subsidiary support, credit workflow documentation, and control owner explanations. This model suits annual planning cycles and specific regulatory timelines where audit evidence needs to be collected in a controlled order rather than re-routed during fieldwork.

Deloitte’s banking audit engagements commonly combine risk-based audit planning with granular control walkthroughs and targeted control testing, then follow through with substantive testing for account balances and disclosures. Banking coverage also tends to include model risk management review where model use affects credit, liquidity, or capital decisions, plus information technology general controls inputs that support audit scoping. This structure fits banks that need consistent evidence standards across sites and product lines and that want a repeatable approach tied to an audit universe and risk and control matrix.

The main tradeoff is that Deloitte’s delivery model usually requires strong internal coordination from the bank for data access, SME availability, and control ownership to meet audit timelines. Deloitte tends to work best for risk-based audit programs where banks need both technical depth and governance rigor for audit findings remediation tracking across multiple business units.

EY delivers banking audit services that cover financial statement audits and regulatory compliance audit work for banks with complex balance sheets and multi-entity reporting. The firm’s audit planning ties control testing and substantive testing to a risk-based audit universe, which helps teams focus evidence on high-impact areas like credit and liquidity exposures.

KPMG delivers banking external audit and risk-based audit work that connects financial statement audit execution with regulatory compliance audit expectations. The firm’s banking engagements typically emphasize evidence traceability across working papers and support for bank-specific processes like loan portfolio reviews and allowance for credit losses.

Crowe supports banking audit teams that need end-to-end coverage across financial statement audit planning, execution, and reporting for regulators and boards. The firm pairs audit leadership with specialists in credit risk, allowance for credit losses, and market and liquidity topics to shape risk-based procedures and evidence standards.

CLA (CliftonLarsonAllen) differentiates through its scale and breadth as a national accounting and audit firm, with delivery built around bank audit workstreams rather than a narrow specialty offering. CLA supports financial statement audits for banks plus regulatory compliance audit engagements, with typical execution organized around risk-based planning, control evaluation, and evidence-based working papers.

Baker Tilly serves banks with audit and regulatory coverage that fits risk-based audit planning and bank-specific testing workflows. Core strengths show up in how audit teams translate governance expectations into practical control testing, documentation, and remediation support.

Forvis Mazars delivers banking-focused financial statement audit and regulatory compliance audit work with an emphasis on risk-based scoping and evidence-led working papers. The firm’s delivery model is built around engagement teams that coordinate audit evidence, control testing, and substantive procedures across bank functions such as credit operations and financial reporting.

RSM US delivers audit and advisory services for banks, with a banking audit practice built around risk-based planning and regulated financial reporting. The firm supports external financial statement audits and regulatory compliance work, plus internal audit and control-testing engagements that map findings to remediation workstreams.