Taxation; Treaties prevail over administrative issuances. A state that has contracted valid international obligations is bound to make in its legislations those modifications that may be necessary to ensure the fulfillment of the obligations undertaken.” Thus, laws and issuances must ensure that the reliefs granted under tax treaties are accorded to the parties entitled thereto. The BIR must not impose additional requirements that would negate the availment of the reliefs provided for under international agreements. More so, when the RP-Germany Tax Treaty does not provide for any pre-requisite for the availment of the benefits under said agreement.
Application for tax treaty relief merely confirms entitlement to the relief. [T]he period of application for the availment of tax treaty relief as required by RMO No. 1-2000 should not operate to divest entitlement to the relief as it would constitute a violation of the duty required by good faith in complying with a tax treaty. The denial of the availment of tax relief for the failure of a taxpayer to apply within the prescribed period under the administrative issuance would impair the value of the tax treaty. At most, the application for a tax treaty relief from the BIR should merely operate to confirm the entitlement of the taxpayer to the relief.