我國信用卡利率行為之研究

The behavior of the rate of interest for credit card in Taiwan

楊正宇(Yang Cheng Yu)

指導教授 ： 劉永欽

亞洲大學/管理學院/國際企業學系碩士班/碩士(2006年)

摘要

本文研究我國信用卡循環信用利率僵固而居高不下是否合理? 信用卡利率是否與轉換成本和營運成本有關? 信用卡市場是否存在逆選擇問題?利用本國銀行2004年6月至2005年12月的月資料，以縱橫型資料（Panel Data)進行迴歸分析，檢視信用卡利率行為及其與信用卡逾放比率之關係，結果發現：銀行資金成本、信用卡借款餘額、營運規模、及信用卡業務強度等變數對信用卡循環利率不具有經濟上的顯著影響，此結果與國外的研究結果一致，這可能是因信用卡循環動用利率長期僵固，樣本抽樣期間利率皆未有調整所致。此項實證結果表示發卡行的信用卡利率行為（或利率決策)並不合理。在信用卡逾期放款比率方面，當信用卡營運規模或放款額固定下，逾放比率與信用卡利率無顯著相關，顯示在我國信用卡市場並無逆選擇問題，亦即信用卡利率降低並不會造成逾期放款增加。

關鍵字

蒐尋成本 ； 轉換成本 ； 逆選擇 ； 信用卡利率行為 ； 信用卡逾放比率 ； 縱橫資料 ； 信用卡業務強度

並列摘要

This study aims to examine that: 1) Is it rational for the rate of interest of credit card sticking and remaining high in Taiwan? 2) Does the rate of the credit card relate to switching cost and operating cost? 3) Does the credit card have the question of adverse selection in the market? Utilizing the monthly data from June of 2004 to December of 2005 for the banks in Taiwan, this study checks the behavior of the rate of interest for credit card and the relationship between the interest rate and the non-performing loans for credit cards using Panel Data models. The result is: Such parameters as the fund cost of banks, the balances of loans and operation size and the business intensity for the credit cards do not have economically significant influence on the interest rate of the credit cards. This result is the same with that foreign studies finding and it may be caused by the interest rate of credit card to be deadlocked for a long time. Therefore, it is unreasonable for the behavior of the rate of interest for credit cards of banks. On the models of the nonperforming loans of credit cards, it is not related with the rate of interest for credit card when operating size or card loans are fixed. This shows that the credit card market does not have the question of the adverse selection in Taiwan. In the other word, non-performing loans will not increase if the rate of interest for credit card reduces.

並列關鍵字

Searching cost ； Switching cost ； Adverse selection ； Behavior of the rate of interest ； Non-performing loans ； Panel Data ； Business intensity of credit card

參考文獻

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