The Amex "Request a Line Increase" button disappeared from my online account in mid-December until a couple of days ago.
It is now back under "Online Statement", "Recent Transactions" and also "Manage Your Account">"Credit and Balance Transfers">"Line of Credit">"Increase Your Line of Credit". If you hover over that last one, the "Helpful Information" explains the process.
I started in June 2008 with 2K and did the IVR phone option to 5K in November 2009 making sure to stay under the magic 3X. I might be able to increase it again, but I'm happy with this CL. I am curious to see when they renew my card this June if they give me an auto CLI.
As always, YMMV.
It's back for me too! It dissapeared back in October. I requested an increase for my Blue over the phone in December 2009 from $4000 to $12000 (under 3x also) and it was instantly granted.
With Amex you can only request up to 3 times your current credit line without the need of showing documents (in theory).
Not for me:
How can I apply for a line of credit increase for my American Express Card?
Because each Cardmember's situation is different, we will need to discuss this with you directly. If you would like to speak about increasing the line of credit on your account, please call the number on the back of your card