As some of you are aware, American Express allows for 3x CLI via soft pulls
If you ask for a limit over $35,000 there is a high chance they will ask you to authorize sending your last two years taxes to them. Last two years, in fact, is quite ambiguous because, because most of the present year will not include the most recent taxes you filed.
If american express asked this from you right now, they would look at 2011 and 2012's income tax statement, from the IRS. Ommitting 2013's till September 2014. This is because the IRS doesn't make the most recent one available till August.
Just a heads up! In case you had higher earnings last year than the years before and you want to optimize your credit worthiness before applying for something