If you've made a mistake on your employer return you can correct it after you've filed it.
To make a correction to your Employer monthly schedule (IR348) if you file using ir-File, or your Employer schedule (IR348) if you're a paper filer you can:
You can also use the IR344 to correct the ESCT amount on your filed Employer deductions (IR345) form.
If you're a payday filer you can correct your Employment information schedule in myIR.
If you file a further return it won't be processed by our system.