Credit and debit note rules require suppliers to adjust tax liability and declare notes within prescribed returns.

Credit notes may be issued where a tax invoice overstated taxable value or tax, goods are returned, or supplies are deficient; such credit notes must be declared in the return for the month of issue but not later than the specified annual deadline, and tax liability adjusted as prescribed, provided reduction is not allowed if tax incidence and interest were passed on. Where a tax invoice understates tax or value, the supplier must issue a debit note (including a supplementary invoice), declare it in the return for the month of issue, and adjust tax liability as prescribed.

---

---

---