Consumer Protection Act Article 21
Contracts of installment sales between traders and consumers shall be made in writing.The above mentioned contract shall include the following :1. The amount of the down payment.2. The difference between the cash price and the total price by adding up the amount of each installment and other incidental charges.3. The interest rates.Where traders fail to specify the interest rates in accordance with the previous paragraph, the interest rate shall be calculated at 5% per annum of the cash transaction price.For traders in violation provisions prescribed in the second paragraph, first and second subparagraphs, the consumers shall not be liable to pay any price above the cash transaction price.
中文原文 消費者保護法第21條
企業經營者與消費者分期付款買賣契約應以書面為之。
前項契約書應載明下列事項：
一、頭期款。
二、各期價款與其他附加費用合計之總價款與現金交易價格之差額。
三、利率。
企業經營者未依前項規定記載利率者，其利率按現金交易價格週年利率百分之五計算之。
企業經營者違反第二項第一款、第二款之規定者，消費者不負現金交易價格以外價款之給付義務。
前項契約書應載明下列事項：
一、頭期款。
二、各期價款與其他附加費用合計之總價款與現金交易價格之差額。
三、利率。
企業經營者未依前項規定記載利率者，其利率按現金交易價格週年利率百分之五計算之。
企業經營者違反第二項第一款、第二款之規定者，消費者不負現金交易價格以外價款之給付義務。