Interest on delayed payment of "interest on tds"

Dear All,

I have a query regarding the interest on delayed payment of "TDS interest". Is there any notification or circular which speaks about this kindly let me know. I have downloaded the Default list from NSDL website which contains the interest on delayed payment of TDS interest. It is calculating the interest till the date of generation of default. but my query is, do we have to calculate the interest till the date of actual payment of interest since the default was generated during August 2011 but the actual interest payment will be made in August 2012.

Thanks and Regards,

Somashekara