SE taxes for a self-employed person are the same as Social Security and Medicare taxes on employees (also called FUTA).

An employee pays 7.65% of his/her wages for Social Security and Medicare taxes, while the employer pays the other 7.65%. A self-employed person has to pay the entire 15.3% on the net business income.

However, just as the employer pays half of the FUTA, the self-employed person is granted the ability to take an adjustment to income for one-half of the SE tax (this appears on line 14 of Schedule 1 (1040)), reducing taxable income. This is done automatically by TurboTax.

The other tax is federal income tax, which is a separate tax from the Social Security and Medicare taxes, and all are due.

[Edited 3/17/2020 2:40 pm CDT - updated Sch SE reference for 2019]