Kevin Costello is a Principal at LGA and the firm’s nonprofit industry lead, bringing more than a decade of experience supporting mission‑driven organizations through audit, assurance, and advisory services. He works closely with executive directors, CFOs, and boards to help nonprofits navigate increasing financial complexity, governance expectations, and compliance requirements. Kevin’s work spans audits, reviews, compilations, and advisory engagements, with deep experience in Government Auditing Standards, single Audits under the OMB Uniform Guidance, and nonprofit‑specific financial reporting.

Kevin is known for his ability to connect financial reporting and internal controls to mission execution and board‑level decision‑making. He regularly supports organizations with lean finance teams, leadership transitions, and evolving funding structures, helping them strengthen audit readiness, improve transparency, and reduce disruption during reporting cycles. His practical approach reflects an understanding that nonprofit leaders need clarity and consistency, not just technical compliance.

In addition to his client work, Kevin is an active thought leader in the nonprofit space. He is the author of nonprofit thought leadership pieces, which focuses on helping nonprofit leaders build resilient financial foundations through stronger controls, clearer reporting, and proactive planning. Clients value Kevin for his steady leadership, clear communication, and long‑term partnership mindset, making him a trusted advisor to organizations focused on sustainability, accountability, and mission impact.