Scotland - applying against penalty

Hi. I applied against late submission penalty and it was agreed in my favour. The penalty had been cancelled but interest on the late payment I already made, have not been cancelled or refunded. How do I claim that back, please?

Hi 

You will also need to Appeal against the Late Payment Penalty, this is different from a Late Filing Penalty, and object to the interest charges - you can do this in writing or online - see the following guidance - Appeal a Self Assessment penalty for late filing or late payment.
HM Revenue and Customs,
Self Assessment & PAYE
BX9 1AS

Thank you