Rounding

How should rounding be handled in e-invoice?

Short answer

Rounding must not silently conceal a difference between totals. Where rounding is used, it must be represented in the structured data and reconcile with the amount payable. First identify whether the difference arose in invoice lines, VAT, allowances or charges, or only in the final payment amount.

Rows

First the items

Check quantity, unit price, discounts and line amount.

VAT

Then TaxSubtotal

VAT blocks must fit according to rate and category.

The end

PayableRoundingAmount

Final rounding belongs in a separate field if you use it.

Test

ERP regression

Test rounding after every change in rates, prices or exports.

Conclusion

Rounding must be explainable, structured and tested, not used as a manual cosmetic adjustment.

Sources

  • Law no. 222/2004 Z. z. Coll. about VAT, tax base and tax
  • Peppol BIS Billing 3.0: LegalMonetaryTotal and PayableRoundingAmount
  • EN 16931 rules for sums of money

the VAT Act · current FAQ of the Financial Administration of the Slovak Republic on e-invoice · Peppol BIS Billing 3.0

Not legal advice.