Key issue: Mitt Romney is saying he’ll “probably” release his tax returns in April 2012. But the key is he’s saying he’ll only release his 2011 returns, in other words, the ones his tax preparers are preparing now. And that will help Romney because that return can be prepared with the needs of 2012 in mind.

If he’s forced to release returns for earlier years, that’s a very different proposition. He can’t change those.

Is your tax rate higher or lower than Mitt Romney’s? This chart will tell you.