I am a retired insurance agent (independent contractor) receiving social security payments. I made quarterly estimated tax payments to the IRS as I have done prior to retirement. I am using Turbo Tax to prepare my tax return. After entering my 1099-MISC income and answering NO to the question "did the insurance policy renewals involve work that is like my main job?" because I am retired, Turbo Tax is showing a federal tax refund exceeding the total amount I paid in quarterly estimated tax payments. Does this seem correct?