The overwhelming majority of folks don't donate enough to charity to hit the tax write-off level.
Countries with sane tax collection systems make it easy for you to add those deductions, either on paper or with a web service run by the government, for free.
And your mortgages, unless they are from international banks, yes, the IRS already knows about those too. Let me put it this way: if it goes through a US domiciled bank, the IRS knows about it already.
Yes, people with complex tax returns do use accountants to file their taxes in countries with sane systems too, but the overwhelming majority don't need the complexity for the equivalent of a w2 and/or a couple of 1099s.
Countries with sane tax collection systems make it easy for you to add those deductions, either on paper or with a web service run by the government, for free.
And your mortgages, unless they are from international banks, yes, the IRS already knows about those too. Let me put it this way: if it goes through a US domiciled bank, the IRS knows about it already.
Yes, people with complex tax returns do use accountants to file their taxes in countries with sane systems too, but the overwhelming majority don't need the complexity for the equivalent of a w2 and/or a couple of 1099s.