Get your taxes done using TurboTax

1. Not free.  But there is another Free File website you might qualify for.  I'll post that later.

2.  Yes the SE Tax is included on your tax return.  It either reduces your refund or gives you a tax due.  Self Employment tax (Scheduled SE) is automatically generated if a person has $400 or more of net profit from self-employment.  You pay 15.3% SE tax on 92.35% of your Net Profit greater than $400.  The 15.3% self employed SE Tax is to pay both the employer part and employee part of Social Security and Medicare.  So you get social security credit for it when you retire.  You do get to take off the 50% ER portion of the SE tax as an adjustment on 1040 Schedule 1 line 27.   The SE tax is already included in your tax due or reduced your refund.  It is on the 1040 Schedule 4 line 57 which goes to 1040 line 14.  The SE tax is in addition to your regular income tax on the net profit.

3.  You pay the tax with your personal tax return.  If you have a Profit you might need to send in some quarterly estimated payments to cover the tax.  Estimates are like withholding from your paychecks.  You must make quarterly estimated tax payments for the current tax year if both of the following apply:
- 1. You expect to owe at least $1,000 in tax for the current tax year, after subtracting your withholding and credits.
 
- 2. You expect your withholding and credits to be less than the smaller of:
    90% of the tax to be shown on your current year’s tax return, or
  100% of the tax shown on your prior year’s tax return. (Your prior year tax return must cover all 12 months).