If you are self-employed, you must pay the self-employment tax quarterly to IRS. You must pay any balance due when you file your Federal income tax returns on or before the 15th day of the fourth month following the end of your taxable year. (If you have a calendar tax year, this means on or before April 15th.)
IRS reports the earnings to us for posting to the earnings record.
For details about figuring net earnings from self-employment, including the optional ways of figuring net earnings which self-employed persons can use, see Chapter 12.
Last Revised: March, 2001
Social Security Handbook