Income Tax Act Article 68

In the case where a profit-seeking enterprise fails to make the provisional tax payment within the period as specified in Paragraph 1 of the preceding Article but has since filed the return and paid the amount of provisional tax payment, which is computed in accordance with the said provision, on his own accord to the tax authority before 31 October, interest accruable thereon as calculated on a daily basis at the banking rate for deposits as specified in Article 123 from 1 October until the date of the payment shall be collected together with the aforesaid amount of provisional tax payment.In the case where a profit-seeking enterprise fails to make the provisional payment in accordance with the preceding paragraph before October 31, the tax authority shall compute the amount of provisional tax payable by it in accordance with Paragraph 1 of the preceding Article and issue to the said profit-seeking enterprise a tax demand notice covering the provisional payment plus one month's interest to be calculated at the banking interest rate for deposits as specified in Article 123, requiring the said profit-seeking enterprise to make the payment to the public treasury in fifteen days.