The maximum Social Security wage base for 2022 is $147,000. If you make more than that at your W-2 job, then you will not have to pay the Social Security portion of self-employment tax on any schedule C income. You will still have to pay the Medicare portion of self-employment tax. If you earn less than the Social Security maximum wage base at your W-2 job, you will have to pay the Social Security portion of self-employment tax until your net earnings and wages equal the Social Security wage base.
