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What Are Client Accounting Services (CAS)?
Client accounting services (CAS) are bundled offerings where accounting firms manage a business's daily finances and provide strategic guidance. These services range from basic bookkeeping and payroll to high-level advisory and virtual CFO roles.
Why it matters
Businesses can outsource their finance functions to access professional guidance without hiring a full-time executive. This approach reduces the risk of tax filing errors and allows companies to scale financial support as they grow.
The details
CAS costs are driven by transaction volume, reporting complexity, and the number of business entities. Pricing typically follows fixed-fee, value-based, hourly, or subscription models. Service providers handle payroll tax filings including Forms 941, 940, W-2s, and 1099s. Independence rules prohibit a firm from both keeping the books and performing the audit.
What's next
CAS is expected to remain a top growth opportunity for accounting firms due to increasing demand for outsourced advisory services.
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