1234, Main Street
Boston, MA 02123
04 April, 2005
<Recipient Address Goes Here>
Re: Increase of Credit Limit
Account No. <account number>
I would appreciate it if you would consider increasing the limit on my current line of credit. As you will see from an examination of my account history, I have made payments in a consistent and timely fashion. Therefore, I request that you consider raising my credit limit from <$current limit> to <$new limit>.
I believe you have all the information already in your files with which to evaluate this request, but if you should have any questions or need additional information, please do not hesitate to contact me.
encl: <List of enclosed items goes here>