Section 913. Claims for Refund.— All claims and application for refund of duties and taxes shall be made in writing and filed with the Bureau within twelve (12) months from the date of payment of duties and taxes.

If as a result of the refund of duties, a corresponding refund of internal revenue taxes on the same importation becomes due, the Bureau shall cause the refund of internal revenue taxes in favor of the importer after issuance of a certification from the Commissioner of Internal Revenue, when applicable.

The importer may file an appeal of a denial of a claim for refund or abatement, whether it is a full or partial denial, with the Commissioner within thirty (30) days from the date of the receipt of the denial. The Commissioner shall render a decision within thirty (30) days from the receipt of all the necessary documents supporting the application. Within thirty (30) days from receipt of the decision of the Commissioner, the case may also be appealed to the CTA.

Notwithstanding the provisions in the preceding paragraphs, the filing of claims for refund of national internal revenue taxes shall be governed by the provisions provided under the NTRC of 1997, as amended.