@Tette , Agreeing with @Critter-3 , may I suggest that you familiarize yourself with the form and the instruction for form 4797 at www.irs.gov. TurboTax ( my personal pref. for complicated returns is to use the Home & Business download/CD version ) will walk you through all the expenses of the selling process such as commission , lawyer's fees, sale preparation, transfer tax etc. etc. Also depending on the type of property and how long held there may be depreciation to consider . But Turbo will walk you through these things.
Also this being a foreign real-estate, there is exchange rate of the day to consider ; for US purposes the basis of the gain computation is generally acquisition cost ( or FMV if acquired by inheritance ) plus cost of any improvements over the years.
It would be nice to know which country you are talking about because there may be differences how the basis is computed for gains calculation.
For US purposes there may be depreciation recapture.
Please tell us more of the situation and one of us can walk you through.
You may want to read the following two IRS Pubs. :
https://www.irs.gov/forms-pubs/about-publication-523
https://www.irs.gov/forms-pubs/about-publication-544
Is there more I can do for you ?
