Click on Tab Register as new user. Select user type Tax Payer. Then Proceed to register.
Note – Till date Registration possible only if buyer has paid tax through challan period onwards A/Y 2008-09 to A/Y 2013-14 or tds of buyer has been deducted From 1 Apr 2011 onwards.
Now login using same link after registration .Then Download Form 16b by visiting below given link .
Initial Details to be entered . A/Y , Acknowledgement No. , Pan of seller