Corporate Income/Franchise (500D) Maryland: Business - Corporate estimated tax (Form 500D) 1st installment due

Corporate Income/Franchise (D-20) District of Columbia: Business - Corporate Franchise Tax Return (Form D-20) due

Pass-Through Income (D-30) District of Columbia: Business - Unincorporated Business Franchise Tax Return (Form D-30) due

Pass-Through Income (D-65) District of Columbia: Business - Partnership Income Tax Return (Form D-65) due

Individual Income (D-40) District of Columbia: Individual - Individual Income Tax Return (Form D-40) due