Income Tax Calendar - Businesses (FY 2008-09): Indian Tax Calendar ( FY 1st April 08 to 31st March 09 ) 1] Pay Your Advance Tax & FBT File Your Tax Return Other Important dates 2] 15th March 09 – Third & Final installment (FY 2008-09) 31st July 09 - if not required to file audit report 31 st March - Last date for making investments in tax-saving instruments 3]     30th April 09- Issue TDS certificates and Form 16, Form 16A for FY 2008-09 4] 31st March 09 - Last date for payment of advance tax (FY 2008-09) 30th Sept. 09-if required to file audit report   5] 15th Sept. – First Installment (FY 2009-10)     6] 15th Dec.09 -Second  Installment (FY 2008-09)     7] 15th March 10 – Third & final installment (FY 2009-10)             Generic Dates         7th of every month: Payment of TDS and TCS collected during the last month (except for TDS deducted in last month of the accounting year, payment should be made within 2 months from the last date of the accounting year) 15th of every month: Deposit of provident fund contribution for the last month 20th of every month: Payment of Professional Tax deducted during the last month 21st of every month: Deposit of ESIC contribution (Employee State Insurance Corporation) for the last month 15th of month after end of Quarter: E-filing of TDS & TCS returns