06 April 2010
where the amount is credited to payee account on the last day of the accounting year then tax has to be deposited into govt account with in two months from the end of the month in which credit is made.
In any other case within one week from the last day of the month in which deduction is made.
So,
If TDS deducted on 7.03.2010-due date is 7.4.2010 and if TDS is deducted on 31.03.2010-due date is 31.05.2010