Business Tax Structure and Compliance

Business tax planning requires expertise across entity selection, payroll obligations, estimated payments, and deduction documentation that extends far beyond personal return filing.

Entity structure drives everything. A sole proprietorship, single-member LLC, S-corp, and C-corp each have different tax treatments. S-corps can reduce self-employment tax but require reasonable salary, payroll filings, and quarterly deposits. Choosing wrong -- or failing to make an election on time -- can cost thousands annually.

Payroll creates ongoing obligations. Once you have employees (or pay yourself as an S-corp owner), you're responsible for withholding, quarterly payroll tax deposits, W-2s, and state unemployment filings. Missing deadlines triggers penalties that compound fast.

Estimated payments replace withholding. Business owners must pay federal and state income taxes quarterly. Underpaying triggers penalties even if you pay the full balance at filing time.

Deductions require documentation. The home office deduction, vehicle expenses, meals, and equipment depreciation all have specific substantiation requirements. Claiming them without proper records invites audit adjustments.

The tradeoff: A CPA who handles business tax well needs both tax knowledge and an understanding of business operations. Not every tax preparer has both.