大額支付系統係銀行間清算之重要金融基礎設施，除可降低整體商業與金融交易成本外，並作為中央銀行傳遞貨幣政策操作效果之管道，我國大額支付系統成交值為國內生產毛額之數倍，且逐年增加，說明大額支付系統之於經濟活動的重要性，但大額支付系統成交值與國內生產毛額之間是否具有同向變動的關係，少有相關實證研究。 大額支付系統具有促進貨幣交易媒介之功能，透過貨幣所得流通速率（Income Velocity of Money）影響貨幣需求，並與中央銀行貨幣政策公開市場操作密切相關，本研究由總體經濟因素、中央銀行貨幣政策因素、支付系統制度性與結構性因素及重大事件等建立迴歸分析模型，探討各解釋變數與大額支付系統成交值變動之關聯性。實證結果發現，名目國內生產毛額、通貨比率及持有貨幣的機會成本、新臺幣兌美元匯率、全體銀行法定準備金、中央銀行定期存單淨釋出金額及大額支付系統週轉率等解釋變數，均與大額支付系統成交值變動具有正向之統計顯著性，顯示大額支付系統與相關總體經濟因素有關。 大額支付系統伴隨一國經濟成長、支持相關經濟活動，且與中央銀行貨幣政策操作有關，具中央銀行傳遞貨幣政策操作效果之功能，此外，本研究發現，大額支付系統週轉率與大額支付系統成交值變動呈正向相關，中央銀行藉由提升大額支付系統效率措施，促使貨幣需求減少，進而降低貨幣供給，應有助於降低貨幣發行成本。 / Large value payment system (LVPS) is an important financial infrastructure for interbank clearing, which can reduce the overall business and financial transaction costs, and could help transmitting the central bank’s monetary policy effect to the market. Taiwan's LVPS transaction value increasing yearly is several times of its GDP. It shows the importance of the LVPS to domestic economic activities. There is little empirical research about the relationship between the LVPS transaction value and GDP. The LVPS could promote the function of the medium of exchange, which affects the demand of money through the Income Velocity of Money and is closely related to the central bank monetary policy. This study’s regression analysis is based on the macro economic factors, the central bank monetary policy factors, payment system institutional and structural factors and major events. The empirical results show that the GDP, the currency ratio and the opportunity cost of holding the currency, USD/NTD exchange rate, the reserve of the whole bank, the net central bank's negotiable certificates of deposit and LVPS turnover, those variables have positive relationship and statistically significant with the LVPS transaction value changes. The LVPS is accompanied by the economic growth of a nation, supporting the relevant economic activities, related to the central bank's monetary policy, and served as the conduit of the monetary policy effect. The study also found that LVPS turnover and its transaction value’s changes are positively related. The central bank would decrease the cost of money issuance by introducing some institutional measures to strengthen the efficiency of the LVPS, then could help reducing the money demand and supply.

支付是商業交易活動中很重要的一環，是買家和賣家之間價值的交換。隨著經濟的發展，支付的需求日趨增長，也因此促使支付方式持續地進化發展。從最早的以物易物方式，以商品貨幣作為價值交換的媒介，到現金以錢幣紙幣的形態出現，一直到訊息通訊技術的蓬勃發展，在電腦和網路的普及下發展出許多線上支付的相關創新服務。支付領域經歷了一連串的演進轉變，現代生活中，市場上有非常多支付方式供我們選擇，我們能夠透過簡單的點擊操作快速完成線上付款，也能利用行動裝置輕易的在刷卡機前感應付款，在我們能夠方便快速地完成支付行為的同時，卻對於支付系統背後的實際運作不甚了解。此篇研究希望透過不同種類支付方式的解構來深入探討支付創新。 此篇研究以支付系統的角度建構了由支付活動參與角色所組成的架構圖，架構圖中包含了付款者、收款者、付款者的銀行、收款者的銀行、負責結算與清算的清算所與信用卡公司等角色。透過多重個案分析，研究多個支付服務案例，在架構圖中依步驟流程拆解、呈現其資訊流和金流，了解各種支付方式的實際運作過程，觀察各個支付系統及角色間互動合作的關係。不僅透過多個案例的流程解構與套用來強化、驗證此研究所建立的架構圖，針對每個挑選出的個案也進行深入分析，分別以付款者和收款者的角度，呈現相關關鍵特性包含支付服務的手續費及收款與付款的時間。此外，經過多重個案的深度觀察與解析，此研究也根據支付系統現況提出相關現象的討論。此篇研究提供一個解構支付服務的工具，希望透過多重個案的解析與觀察更深入了解支付創新。 / Payment is a crucial part of commercial activity that occurs in our daily lives. As an economy expands, the requirements of payment increase rapidly, which gives rise to the continuous evolvement of various payment methods. We have evolved from a barter system to the use of cash and paper-based payment instruments, to the advent of information communication technology (ICT) which contributes to online payments, along with the creation of many types of innovative payment methods. This process has been a series of innovations in payment domains. Although many payment methods currently exist, there is a limited understanding of how payment systems work and what actually happens when we pay with a single click online or complete the payment in a flash by placing a mobile phone close to a merchant point-of-sale terminal. This study is dedicated to deconstructing various kinds of payment systems to understand payment innovations in depth. To explore the information flow and cash flow operating in the ecosystem, this study develops a framework for analyzing a payment system based on the literature. The framework consists of a payer and payee who connect through transactions and launch a series of payment processes that include institutions such as the payer’s and payee’s bank, and intermediaries such as a credit card association, a settlement bank, and a clearing house that handles the clearing and settlement process. These components interact and cooperate to fulfill payment activities. The framework, which aims to illustrate the role that each component plays and how complicated payment systems work, is expected to cover all kinds of payment methods. We enhance and verify the framework by applying several cases for traditional and innovative payment methods. With these selected cases, we analyze payment processes between participants and clarify features relating to payment fees and time in respect to payers and payees. Through the observation of multiple cases, we also derive particular facts from the payment operation in the present ecosystem. We hope that the research will offer an instrument to better understand payment systems and provide an in-depth deconstruction and observation for payment innovation.