Interest u/s 220(2) - how to pay?

Its simple interest @ 1% p.m and has to be paid via challan 280 under 400 [Regular Assessment]

S.220(2) If the amount specified in any notice of demand under section 156 is not paid within the period limited under sub-section (1), the assessee shall be liable to pay simple interest at one per cent for every month or part of a month comprised in the period commencing from the day immediately following the end of the period mentioned in sub-section (1) and ending with the day on which the amount is paid 

Thank You Mr Z ╭∩╮（︶-︶）╭∩╮

But at payment gateway of the bank, where to show interest or penalty? Its penal interest right....?

Regards,

Suraj

Ohk. Thank alot, Mr Z ╭∩╮（︶-︶）╭∩╮
 

I received a CPC demand for AY 2004-05 under 220(2) and I paid it in Cash using INS Form 280, Under 400 and showing Interest.

After how many days I should see that demand has been nullified in IT/CPC records.