How do I report income that came from sale of a piece of property that I was only a part owner of? I do not have a 1099-S form.

You can enter as sale of land under Investments.  Because you were not 100% owner, you can enter the amounts for your share of the transaction.

To enter as investment sales:

Under Federal Wages& Income, select Stocks, Cryptocurrency, Mutual Funds, Bonds, Other (1099-B) under Investments and Savings.

1. Did you have investment income in 2024? YES
2. Let's import your tax info  Enter a different way
3. OK, let's start with one investment type  choose Other then Continue
4. Tell us more about this sale- enter name and  Continue
5. Now, enter one sale for _____.  Enter all information.