If the Social Security Administration sent you a notice about an overpayment you owe, you can make a secure payment here. Write a letter to the Social Security Administration.Tell them how much you can afford to pay each month. If we can't waive collection, we may use this form to decide how you should repay the money. Please answer the questions on this form as completely as you can. The notice will provide the tax type from which the overpayment originated and tax type to which it is being applied. To appeal, fill out and file Form SSA-561-U2 with Social Security. On the form, explain why you disagree with the waiver denial. My parent recently received a letter from the SSI stating that they were overpaid.