Qualifying value content rules specify formulas and valuation methods determining originating material content for tariff preference. Calculation of qualifying value content under the Agreement provides two alternative formulas: either (F.O.B. minus value of non originating materials) as a percentage of F.O.B., or (value of originating materials plus direct labour, direct overhead and profit) as a percentage of F.O.B. Generally Accepted Accounting Principles of the exporting Party apply. F.O.B. and material values are defined, and the Agreement on Customs Valuation applies mutatis mutandis to determine customs or first ascertainable domestic values, with specified exclusions for in country transport and handling costs.