I have a client using Payfit for their payroll. April's RTI was submitted with a huge error which we need to correct ASAP. I can't see anywhere on Payfit or their help centre how to amend a submitted RTI. There's a section about adding previous unreported payments, which get added to the current month's payroll - this makes me think that one can't amend previous months.
I've emailed/webformed their support team (who have no phone number) but who knows how long that'll take to get responded to, whilst this needs sorting ASAP.
Does anyone use it and know?
Assuming it can't be done on Payfit, how would I go about correcting it with HMRC? We use moneysoft, so I'm thinking enter all of the details exactly as per Payfit (incl employee details, payroll no's etc), then tick the box allowing resubmission (not sure if that makes a difference at HMRC's end or not) and submitting. My concern here is that HMRC would record it as a second submission rather than an amended one.
Pulling my hair out here ...