Avoiding these five mistakes can save you grief and put more money in your pocket

By RACHEL LOUISE ENSIGN
Updated April 5, 2012 12:01 a.m. ET

Fund investors can go wrong in all sorts of ways. But since mid-April is fast approaching, let’s talk about one of the most common and least understood: taxes.

Even if it is too late to do anything about this year’s returns, it is a good time to start planning for next year’s…