Brett Baker

Thank you for the reply. Spoke to technical support at HMRC and got the issues sorted out. They were very helpful.

One of our employees has reach retirement age part of the way into the last month of the tax year (March). We have changed the NI letter to C and have a new tax code for them. When we go to submit to HMRC it says ["The amount in [EMPLOYEESCONTRIBUTIONSONALLEARNINGS] must be 0.00 if the [NILETTER] is 'X', 'C', 'K', 'S' or 'W'. Please check", '7865', "This must be 0.00 if [NILETTER] is 'X', 'C', 'K', 'S' or 'W'.", 'Diagnostic message:', 'Assertion failure:'] The amount that the PAYE Basic software calculated is £40.30 for the employee to pay in NI. Surely the software should have calculated it correctly. Is there any way of changing the figure to be 0?