Johnson Lambert & Co

Johnson Lambert & Co is an accountant in Charleston, SC. The firm provides audit, tax, and advisory services to a national and selectively international client base, with a specific focus on insurance entities, nonprofit organizations, and ERISA-qualified employee benefit plans. Since its founding in 1986, the firm has served over 750 insurance entities, including commercial insurers, captives, risk retention groups, and public entity risk pools. It also supports hundreds of not-for-profit organizations, such as trade associations, private foundations, and religious-affiliated groups, and audits more than 75 employee benefit plans, including 401(k), 403(b), and pension plans. Johnson Lambert & Co is an independent member of DFK International/USA, a worldwide association of independent accounting and management consulting firms.

The firm’s audit and assurance practice is tailored to the specific operational complexities, risk profiles, and reporting requirements of its three target industries. Engagement teams are immersed in these sectors, allowing for customized project plans that align with client goals. The tax practice offers specialized services for insurance, nonprofit, and benefit plan tax needs, including premium tax support for multi-state filings and retaliatory assessments. Advisory and consulting services include internal audit support, Model Audit Rule (MAR) compliance for insurers exceeding premium thresholds, SOC reporting, and cybersecurity assessments. The firm utilizes data analytics and automated testing workflows to perform full population reviews, expanding coverage beyond traditional sampling. Johnson Lambert & Co was ranked #110 on the 2025 INSIDE Public Accounting Top 200 Firms list, and Principal Elyssa Nagle was recognized on Captive International’s FORTY Under 40 list for the captive insurance industry.

The Charleston office is located at 409 King St, situated on King Street within the King Street Design District. It is about a short walk from the Charleston Music Hall and the Best Friend Train Museum, with the Sonny Goldberg Way memorial and the Board of Field Officers of the Fourth Brigade memorial also nearby.

Johnson Lambert & Co brings four decades of niche expertise in insurance, nonprofit, and employee benefit plan accounting to the Charleston area. This deep industry focus allows the firm to provide technical excellence and personalized attention to clients navigating complex regulatory and financial landscapes.

Services:

• Audit and Assurance Services
• Consulting Services
• Cybersecurity Assessments
• System Implementation Reviews
• Tax Services