Inland Revenue has advised us they will no longer accept computer generated (printed) monthly returns (EMS/IR348) from 1 April 2018.
If you don't use ir-File, this means you must either: manually enter the details on their website via MyIR, or manually fill out and post their preprinted form IR348 each month
This is not the first time Inland Revenue have made this announcement, they did the same two years ago, but it does sound like they mean it this time.