Iras are really sticky on what you can contribute to your Ira and what you can not. Your Ira contributions must be cash, check, or money order or sent in by your employer. They must be from your wages or the salary that you earn and commissions that you earn. They can come from any self employment income that you have earned and that you can prove that you earn from a tax document. The contributions can come from the non taxable combat pay that you have earned. You can not put any kind of profit that you have made from a sale of merchandise into the Ira.