January 16– Estimated Tax Payments
January 31– Payroll Quarterlies, W-2s, 1099s
March 15 – S Corporation Tax Returns, Partnership Tax Returns
April 17 – Individual Tax Returns, C Corporation Tax Returns, Estimated Tax Payments
April 30 – Payroll Quarterlies
June 15 – Estimated Tax Payments
July 31 – Payroll Quarterlies
September 17 – Estates/Trusts, S-Corporations and Partnerships on extension; Estimated Tax Payments
October 15 – Individuals and C-Corporations on extension
October 31 – Payroll Quarterlies