Managing files on an iPhone has become significantly easier with recent updates to iOS, particularly with the introduction of the ability to change file extensions directly within the Files app.

The April 15 tax deadline is here, but you can get an automatic extension to file until Oct. 15. Here's how.

Applying for a six-month extension is easy, but IRS rules still require you to make a proper estimate of the taxes you owe. A “zero extension” could cost you. Every year, millions of taxpayers file ...