How does Warren Buffett pay a lower tax rate than his secretary? Here's the answer. We've all heard stories about wealthy Americans taking advantage of tax laws to avoid paying federal income taxes. It's certainly true that many rich individuals use the tax laws to their...

Scale and efficiency drive Apple's industry-leading profitability. Apple (NASDAQ:AAPL) is one of the world's most profitable companies and certainly the most profitable smartphone maker. Per Strategy Analytics (by way of MacRumors), Apple captured 79% of all smartphone industry profits in 2016, while rival Samsung (NASDAQOTH:SSNLF) took in 14.6% (leaving very little for...