April 15 isn’t the only important tax date for business owners. The following dates are also important to keep in mind:
— Annual returns. Most annual returns are due April 15 for unincorporated companies and S corporations. C corporations must file annual corporate returns within two-and-a-half months after the close of their fiscal year.
— Estimated taxes. Estimated taxes are due four times a year: April 15, June 15, September 15 and January 15.
— Sales taxes. Sales taxes are due quarterly or monthly, depending on the rules in your state.
— Employee taxes. Depending on the size of your payroll, employee taxes are due weekly, monthly or quarterly.