Civil Code Article 153
This English translation was last updated on 2021-01-20, but the Chinese text was amended on 2026-08-17. Later amendments may not be reflected in the translation — please refer to the Chinese text.
When the parties have reciprocally declared their concordant intent, either expressly or impliedly, a contract shall be constituted.If the parties agree on all the essential elements of the contract but have expressed no intent as to the non-essential elements, the contract shall be presumed to be constituted. In the absence of an agreement on the above-mentioned non-essential elements, the court shall decide them according to the nature of the affair.
中文原文 民法第153條
當事人互相表示意思一致者，無論其為明示或默示，契約即為成立。
當事人對於必要之點，意思一致，而對於非必要之點，未經表示意思者，推定其契約為成立，關於該非必要之點，當事人意思不一致時，法院應依其事件之性質定之。
當事人對於必要之點，意思一致，而對於非必要之點，未經表示意思者，推定其契約為成立，關於該非必要之點，當事人意思不一致時，法院應依其事件之性質定之。