Regulation for Selection and Fee Calculation of Social Welfare Service Providers Entrusted by Entities Article 17

Where the contract period is longer than a year, the entity that entrusts a provider for social welfare service may prescribe in the contract that the contract price may be adjusted starting from the second year according to a given price index, applicable adjusting items, adjusting method, and the cap amount of adjustment.
中文原文 機關委託社會福利服務廠商評選及計費辦法第17條
機關委託廠商辦理社會福利服務,其履約期間逾一年者,得於契約內訂明自第二年起得隨物價指數調整契約價金,並敘明其適用之物價指數、調整項目、調整方式及調整金額上限。

English translation for reference only; the Chinese text prevails. Not legal advice.