Regulations for Selection and Fee Calculation of Professional Services Providers Entrusted by Entities Article 17
Where the time frame for fulfilling the contract is longer than a year, the entity that entrusts a provider for professional service may prescribe in the contract that the contract value may be adjusted starting from the second year according to the given price index, the applicable adjusting item, the adjusting methods and the maximum amount of adjustment.
中文原文 機關委託專業服務廠商評選及計費辦法第17條
機關委託廠商承辦專業服務，其履約期間在一年以上者，得於契約內訂明自第二年起得隨物價指數調整契約價金，並敘明其所適用之調整項目、調整方式及調整金額上限。