PERLINDUNGAN KONSUMEN TERHADAP PRAKTIK TRANSAKSI TANPA NOTA PADA PEDAGANG PASAR BERINGHARJO (PERSPEKTIF HUKUM PERIKATAN DAN AKAD MUAMALAH)NIM.: 22103080114Jilan Sofiatun NisrinaauthorThis study is motivated by the continuing practice of transactions without receipts among traders at Beringharjo Market, Yogyakarta. This condition creates a gap between the ideal situation, where transaction receipts serve as evidence and provide legal protection and certainty for consumers, and the reality in which many transactions are conducted without issuing receipts. The absence of receipts may hinder consumers from proving the existence of a transaction in the event of a dispute. Based on this issue, the study examines consumer protection in receiptless transactions, the legal status of such transactions from the perspective of contract law, and their review under the principles of muamalah contracts. This research employs an empirical juridical method with a qualitative approach. Data were collected through interviews and documentation. The respondents consisted of 15 traders, including 5 clothing traders, 5 food traders, and 5 bag or accessory traders, as well as 15 consumers selected through purposive sampling. The respondents were chosen based on their experience in conducting transactions without receipts and their involvement in issues related to such transactions. The collected data were analyzed descriptively and qualitatively by relating the field findings to applicable laws and Islamic legal principles. The results show that transactions without receipts remain legally valid under civil law as long as they fulfill the requirements of a valid agreement as stipulated in Article 1320 of the Indonesian Civil Code. However, the absence of receipts weakens the consumer’s position in proving a transaction when disputes arise. From the consumer protection perspective, this practice does not fully comply with the obligations of business actors to provide information and ensure transaction certainty as regulated under Law Number 8 of 1999 concerning Consumer Protection. From the perspective of muamalah contracts, receiptless transactions are considered valid as long as the pillars and conditions of sale and purchase are fulfilled; however, they may contain elements of gharar due to the lack of clear transaction evidence. Therefore, issuing transaction receipts is necessary as a preventive measure to strengthen consumer protection, legal certainty, and fairness in commercial transactions.343.071 Perlindungan Konsumen2026-06-12UIN SUNAN KALIJAGA YOGYAKARTA;FAKULTAS SYARI’AH DAN HUKUMThesis