In 2020 I made over $200,000 on my regular job. I paid the maximum OASDI of 8537.40.
I did some self employment consulting on the side and made $26,000 (form 1099-C) no employment taxes were taken out.
The 2020 Turbotax program did not add social security on the SE form, only medicare.
The IRS send me a letter demanding an extra $2500 for the unpaid OASDI.
How is self employment OASDI taxed when someone has paid the maximum on their regular job. The person at the IRS helpline did not know.
Thank You.