Corrections/Additions to a CIS Monthly Return (CIS300)

Additional Security Checks

In order to maintain the confidentiality of a contractor’s monthly return we have introduced further security checks to ensure that the corrections made are proper to a particular return and that the revised details have been recorded correctly.

What does this mean?

If you telephone the CIS contact centre you may be asked for other details shown on the original return that now requires amendment. You should therefore ensure that you have a copy of the original return before making the phone call.

If you send an amended return to Netherton then you may be contacted by the CIS centre in Newry asking you to confirm the period to which the corrections/additions relate.

If you write a letter to the CIS centre in Newry, once again you may be contacted either by telephone or in writing asking for confirmation of the amendments.