When AutoCode splits a tax-exclusive bill across multiple accounts, the tax calculated by the accounting system can occasionally differ from the supplier's tax by one or two cents.        

     


Why this happens

 A supplier may calculate tax once on the invoice total. Many accounting systems instead calculate and round tax separately on each invoice line. Both methods can produce a small rounding difference.       



Example       

Supplier invoice

  • Taxable subtotal: $100.05
  • GST: $10.01
  • Total: $110.06
         

After splitting invoice lines:

  • Line-level tax: $10.00
  • Calculated total: $110.05
  • Difference: $0.01


 

How BillBjorn handles it: BillBjorn adds a visible Tax rounding adjustment line of $0.01, bringing the final bill total back to $110.06.        
       
       

When the adjustment appears       

  • The invoice line amounts are shown as tax exclusive.
  • AutoCode has split the invoice into multiple accounting lines.
  • Line-level tax rounding creates a small difference.
  • The difference is within BillBjorn's rounding tolerance.
       

Why BillBjorn uses a balancing line

Not all accounting systems allow BillBjorn to override the calculated tax. A balancing line provides consistent behaviour across supported platforms, preserves the AutoCode allocations, and ensures the exported bill matches the supplier's payable total.



Tax-inclusive invoices: The additional line is not shown when invoice line amounts already include tax.
 

 

The adjustment remains visible and can be reviewed, edited, or removed before export.