The company issued 1st sale invoice and submitted the VAT PP.30 already. After one month, the company found out that the price on the sale invoice is not correct and then they issued the new sale invoice with the new correct price, which such correct price is lower than the 1st sale invoice. In this case, the company need to submit an additional VAT PP.30? 

Panwa : Yes, the company must submit the additional VAT PP.30 (price difference) for the over-declared sales and the company can request a Tax Refund. If you need further assistance for monthly tax filing, half year tax filing and doing yearly tax, kindly note that we could assist for such, click here

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