Of all the follies of 2017, the most tawdry may be the GOP’s headlong rush to pass a tax bill that even its proponents don’t understand. What’s especially sad is that otherwise sensible Republicans seem to be capitulating to the tax-cut frenzy. Political desperation is the mother of this legislation. Despite Republican control of both houses of Congress, the Trump …

The seminal financial event of this year, the current decade, and possibly our generation is here: Futures trading in bitcoin has begun. But the derivative that would really damp the current crypto frenzy and make digital tokens a speculator-friendly—if not investment-worthy—commodity, currency, tulip, or whatever, isn’t futures. It’s options. It’s hard to see how even existing futures trading rules can …

The great clearance sale of Australia’s bancassurance industry is almost complete. With Australia & New Zealand Banking Group Ltd. offloading its life unit OnePath to Zurich Insurance Group AG for A$2.85 billion ($2.1 billion) on Tuesday, the country’s big banks have all but sold out of life insurance, an industry they dominated as recently as 2015. Only Westpac Banking Corp. …