Bookkeeping Practice Entity Structure: The S Election, the Specified-Service Phase-Out, and Why the Two Decisions Pull in Opposite Directions
September 21, 2026
A bookkeeping practice is a specified service trade or business — accounting is on the list — so the 20% qualified business income deduction phases out once the owner's taxable income passes the threshold. The S corporation election still saves payroll tax above a reasonable salary, but it shrinks the QBI base and interacts with the phase-out in ways a non-service business never sees. Here is how the two rules combine for a bookkeeper, and the profit bands where each structure wins.
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