Although a little dated by now (written in 2014), Heaven's Bankers is a very accessible overview of the principles behind Islamic Finance and perhaps more compellingly the fight between the soul behind these principles versus the enormous pressures to push Islamic finance to form over substance--to find ways to make Islamic finance functionally indistinguishable from conventional heavily debt oriented global finance. Along the way, Irfan shows how in fact the initial structures in Judaism and Christianity against usury and excessive debt were progressively undermined by the same forces (greed and collaboration between secular governments and the captains of the financial industry) that were--as of the book's end--gnawing away at Islamic finance in the mid 2010's.
In essence, ethical finance should maintain a link between the financing of a transaction and the transaction itself. Buying sacks of coffee, then subsequently selling the coffee--for example--is a perfectly fine way to use money. However, contracts to supply money in the future--without any underlying direct connection to "real economy" transactions--introduce gambling/speculation, as well as the capacity to take advantage of people or businesses with less understanding of the risks of the transaction than the seller/provider of these contracts. Think Deutsche Bank or Goldman Sachs during the 2008 meltdown selling CDOs in subprime pools to treasurers of small pension funds in northern Norway. If the parties are clear about what the money is going to be used for, then the assessment of the risks involved are clearer, as is the alignment of interests of the participating parties. This is really the principal behind private equity, partnerships or SME finance--relationships matter and everyone knows what the idea is behind how the financing would help to generate wealth.
However, SMEs and partnership transactions more generally take a lot of time and are difficult to "scale". Those who control large amounts of money are looking for easier ways to have that money "work" for them. So they seek to aggregate pools of financing and "wholesale" structures which inevitably become separated from the underlying transactions fed by such pools of financing. Derivatives and the trading of indices come about, with those who are especially risk loving using leverage at the margin to buy such assets. All too regularly, we see meltdowns like 2008/Lehman Brothers; booms and busts; Madoff schemes and Enrons.
Irfan argues persuasively and through the words of academic and religious experts that the "system" is stacked against "ethical" finance, like Islamic finance. Why?
1) Distortion by tax laws around the conventional/secular world--which permit the deduction by corporations of interest against their taxes. By contrast, corporations have to pay tax on the income out of which they can pay their partners dividends and even after paying such taxes, the recipients of such dividends have to pay taxes as well--a double taxation. This also holds true for capital gains;
2) the fractional reserve system--which allows banks to "create" money on the supposition that their loan book is more liquid and less risky than partnership or equity interests. Thus as every first year economics student will know, the banks can on-lend roughly 95% of the deposits they take, and on and on goes this lending until the central bank either increases the percentage allowable (slowing down the pace at which money is "created" by the banks) or until a bust occurs--like 2008; and, as a corollary to how much larger such on lending makes outstanding debt levels:
3) the political system tends to bail out banks and large debt defaults, but not so with individual equity investments or even the stock market. No matter how irresponsible the bankers are in "creating" assets with borrowed money, the very scale of the banks and the debt outstanding means that in effect the system is "too large to fail"--such that the governments of the conventional developed world will bail out these banks once a bust occurs. Thus, albeit not without some drama, there is an asymmetric risk/return picture at play with debt versus equity investments. The taxpayer will be called upon to bail out such excesses, and almost without exception, no banker will be put in jail and no banker will have his or her bonuses or earnings impounded.
Seen against these powerful forces, Irfan shows that the "system" of Islamic finance was pushed to ever more debt like instruments, with Islamic experts induced to pronounce form as adequate for the sharia blessing, rather than to focus on the substance. The wealth of investors especially in the Gulf and elsewhere seeking Islamic finance but with returns at least as comparable as those offered by the conventional finance industry--were fertile grounds for the Barclays and Deutsche Banks of the world to "structure" products that outwardly could be certified by well paid Sharia "experts". Thus the greed of the bankers, the "no trade-offs" mentality of the investors, and the distortions in the world's largest capital markets in favor of debt and interest led to a short term boom and then a bust as well of Islamic finance--especially after the failure of a large facility which Goldman Sachs sought to raise.
I see parallels with the "impact investment" industry--in which I am active. The time it takes to understand a transaction, to get to know the counterparties and to agree upon a way to partner in any given financing transaction bores large investors--who want to "scale" and become the biggest or best known "impact investor." Yet short cuts are dangerous and ultimately expensive. Form cannot always mask the real substance behind the transactions "sold" as compliant.
Irfan winds his book up saying that there is still a chance for ethical investment--and even cites the Church of England's archbishops and the Catholic Church's Pope railing against the corruption of capitalism as practiced in the years surrounding the 2008 collapse. Yet, he also notes that the Church of England pension fund had invested in the egregiously high interest rate payday loan vehicle, Wonga, and the investments made by the Vatican's financial managers provide ample room for doubt of the consistency in the Pope's encyclicals.
Heaven's Bankers is thus a broader tale than Islamic finance and its basic principles--although it does a good job of that. Rather, it asks whether and how humans can focus on win/win economic growth and what the financing behind such growth should look like--versus the ancient sinful nature of man--greed, pride and the willingness to exploit the vulnerable. I very much root for the results Irfan advocates, but suspect he might be a little doubtful himself on the outcome.