Per the IRS Instructions for Schedule SE (Form 1040) Self-Employment Tax, page SE-2:

U.S. Citizens or Resident Aliens Living Outside the United States

If you are a self-employed U.S. citizen or resident alien living outside the United States, in most cases you must pay SE tax. You can't reduce your foreign earnings from self-employment by your foreign earned income exclusion.

Exception. The United States has social security agreements with many countries to eliminate dual taxes under two social security systems. Under these agreements, you must generally pay social security and Medicare taxes to only the country in which you live.

The United States now has social security agreements with the following countries: Australia, Austria, Belgium,Canada, Chile, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Japan, Luxembourg, the Netherlands, Norway, Poland, Portugal, South Korea, Spain, Slovak Republic, Sweden, Switzerland, and the United Kingdom.

If you have questions about international social security agreements, or to see if any additional agreements have been entered into, you can visit the Social Security Administration's (SSA's) International Programs website at SSA.gov/international. The website also provides contact information for questions about benefits and the agreements.

If your self-employment income is exempt from SE tax, you should get a statement from the appropriate agency of the foreign country verifying that your self-employment income is subject to social security coverage in that country. If the foreign country won't issue the statement, contact the SSA Office of International Programs. Don’t complete schedule SE. Instead, attach a copy of the statement to Form 1040 and enter "Exempt, see attached statement" on Schedule 4 (Form 1040), line 57.

To remove Schedule SE from your TaxAct® return if necessary:

1. From within your TaxAct return (Online or Desktop), click Federal. On smaller devices, click the menu icon in the upper left-hand corner, then select Federal
2. Click Taxes in the Federal Quick Q&A Topics menu to expand the section and then click Self-employment tax adjustments
3. Click Continue or No until you reach the screen Self-Employment Tax - Adjustments
4. On the line Other adjustments (+ or -) enter the amount (as a negative number) which should be exempt from self-employment tax and click Continue.  Schedule SE will no longer be a part of your return if the entire amount was entered to be exempt.
5. Print the return and manually enter the text Exempt, see attached statement on IRS Schedule 4 (Form 1040), Line 57 and attach a copy of the statement from the appropriate agency of the foreign country to Form 1040.

Note. Due to the need to enter text on Line 57, and to include the statement, the return would need to be paper filed. Click Filing and select Mail My Return to complete that process.

Please refer to IRS Publication 54 Tax Guide for U.S. Citizens and Resident Aliens Abroad for additional information.