According to turbo tax support:
“The SE-T is self-employment taxpayer form. Line 18 is for the amount of money earned between March 27, 2020 and December 31, 2020. The self-employment tax on that portion can be postponed for payment in the following year. You can postpone that portion of your taxes due with no penalties or interest.
You can enter 0 on line 18 if you want to pay all of your taxes this year.
For more information about your 1099 form, please visit https://ttlc.intuit.com/community/form-1099-nec/help/what-is-a-1099-nec/00/1903737.”
-credits to Shanti
