HMRC have now published updated guidance on PAYE late payment penalties, including information about the new late payment penalty warning letters.

The guide gives details of the late payments penalties which apply for all employers and contractors from May 2010. For employers with 250 or more employees, please note that these penalties have replaced the Mandatory Electronic Payment surcharge which previously applied. Penalties charged are in addition to any interest that may be due.

This can be accessed at: http://www.hmrc.gov.uk/paye/problems-inspections/late-payments.htm