Business income and expense records (including gross receipts, invoices, and categorized expenses)
Profit and Loss Statement (P&L) and Balance Sheet
Business bank statements for the tax year
Payroll reports (if applicable), including Forms W-2 and W-3 issued by the S-Corp
Forms 1099-NEC or 1099-MISC issued or received by the business
Mileage logs for any vehicle use tied to the business
Asset purchase or depreciation records (if you bought, sold, or disposed of business equipment)
State and local business tax documents (including any licenses or filings)
Last year’s S-Corp tax return (Form 1120-S), if available
Shareholder information, including ownership percentages and any distributions taken
Business EIN (Employer Identification Number)