This is the fourth in a series of four books on Notes on Islamic Economics. It deals with three important subjects: 1) the Money and development theory in Islamic economics, 2) Islamic public finance, and 3) sustainable development in the Muslim countries. In part one, we discuss the Islamic development theory, money as a central issue in development and inflation. This part consists of chapters one to seven. Chapter one deals with the Islamic theory of economic development, chapter two deals with the role of government in economic development, chapter three deals with money in Islamic economics, chapter four discusses inflation, chapter five discusses economic policy and its tools Islamic economics and chapters six and seven deal with issues of privatization in Islamic perspectives. Part two consists of five chapters; eight through twelve and deals with public finance and part three deals with sustainable development for the Muslim countries in chapters thirteen through sixteen. The conclusion of this book looks for the future of Islamic economics. The theme of my argument in all of them is that the Islamic system looks at economic development is a process determined by the institutional set up of a society which is changeable only by changing the value/cultural system of the society. The religion of Islam attempts to implant values conducive to development and prepares human beings to undertake necessary changes which bring about economic progressiveness. Besides, there are many similarities between Islamic and conventional economics when it comes to the general objectives and approaches while a number of details differ considerably.