S corporation tax savings depend on revenue levels and operational costs

A report from 1-800Accountant examines the financial implications of switching from an LLC to an S corporation status. While S corporations can reduce self-employment tax, the actual benefits depend heavily on revenue levels and operational costs.

Using 2026 IRS tax rates, the data suggests that while an S corp’s estimated federal tax bill is lower than an LLC’s across all profitable ranges, the significant savings typically only materialize once net income exceeds approximately $100,000. At lower revenue levels, the increased costs of running an S corporation—such as higher tax preparation fees, payroll processing, and documentation requirements—can offset the federal tax savings.

Additionally, certain states like California impose entity-level taxes on S corporations that are not applied to default LLCs. The report notes that most businesses of either type report losses when revenue is below $50,000, and profitability increases sharply as revenue grows.