If you contribute to an IRA you will receive Form 5498. This form will be sent to you by May 30th, 2011. Form 5498 shows all of the contributions you have made to your IRA for the previous year. Form 5498 basically informs the IRS and reminds you about your contributions. Although you do not need to send Form 5498 to the IRS with your tax return you should keep it with the rest of you tax documents.
If you are a trustee or an issuer and you must send out Form 5498, Copy A needs to be sent to the IRS by March 31, 2011 and Copy B must be sent to the recipient by May 31, 2011.