Give your S corp a year-round compliance rhythm.

Each payroll cycle and month

Run payroll, review the reports, and confirm that required deposits are made on the applicable schedule. A quarterly return does not replace timely payroll tax deposits. Reconcile bank and payroll records, review reimbursements, and classify owner transactions.

Each quarter

Review payroll returns, required state filings, owner withholding or estimated payments, and changes in profitability. Form 941 generally is due after each quarter. Your deposit schedule can require action sooner.

A brief recurring review gives you a place to resolve missing records, unexpected transfers, and changes in owner duties while the facts are fresh.

Before year-end and return preparation

W-2 reporting and Form 940 generally have January 31 deadlines, subject to applicable adjustments. Form 1120-S and shareholder K-1s generally are due on the 15th day of the third month after year-end. Form 7004 requests a six-month filing extension.

Due dates can move for weekends, legal holidays, or relief. Check current IRS instructions and state guidance; a filing extension does not extend payment deadlines.

• Review compensation and owner benefit reporting.
• Reconcile payroll returns to W-2 totals.
• Close the books and resolve unexplained balances.
• Update shareholder basis and assess Form 7203.
• Confirm state reports, fees, and any separate extensions.

Make the calendar yours

Add the responsible person, source document, and completion evidence beside each task. Keep reminders separate from proof that a filing or deposit actually happened. Use the free owner checklist as a starting agenda for your adviser.