An S corporation return is only one part of the owner’s tax picture. W-2 compensation, distributions, shareholder basis, retirement contributions, health insurance, QBI, state taxes, and estimated payments all interact.
Ask about reasonable compensation
The professional should be able to explain how compensation is evaluated and documented rather than choosing a salary by habit.
Ask about shareholder basis
Basis affects loss deductions, taxability of distributions, and gain on disposition. It should be tracked rather than reconstructed only when a problem appears.
Ask about owner benefits
Health insurance, retirement plans, accountable-plan reimbursements, and fringe-benefit rules can require special handling for more-than-2% shareholders.
Ask how the business and individual returns are coordinated
The two returns should not be prepared as separate silos. Planning should consider the combined result.