08 February 2009
If there is a vaild reason then you need not pay interest.
For eg you have to pay through internet bankiing and there was a problem in the website which is agreed by the Bank then you can take benefit of not paying interest.
Alternatively you have to pay cash and the Bank is on strike or holiday then you can pay on the next day.
When the ao demands you have file objections and reasons and you can take benefit by not paying the interest.
10 February 2009
I think u should better pay the amount with interest because there is no supporting in law to delay payments on account of technical errors and then justify the ITO.