How to Add a Back Payment or Advance Payment to a Pay Slip

• Modified on: Thu, 20 Aug, 2026 at 1:50 PM

1. Find wage code 410 in the system. This is a special code that does not get taxed and does not show up in the "untaxed allowances" section of the annual Wage Tax Card (in Dutch: Jaaropgaaf, Loonbelastingkaart, and Loonopgaaf).
2. Duplicate (copy) wage code 410.
   Note: Duplicating means making a copy of it, so you don't change the original code.
   
   
   
3. Give your new copy a clear name that tells you what it's for. For example: "Back payment March" or "Advance payment."
   
   
   
4. Open the pay slip of the employee who needs the payment.
   
   
   
5. Enter the amount in this new wage code:

• If it's money owed from an earlier period (already taxed before), enter that amount.
• If it's an advance payment, enter that amount instead.
  
  
  
  

6. Finalize the pay run as you normally would.

Note: Because wage code 410 is untaxed, use it only for money that should not be taxed again — such as an amount already taxed in an earlier period, or an advance that will be settled later.