What you are looking for is the Common Reporting Standard: https://en.m.wikipedia.org/wiki/Common_Reporting_Standard https://en.m.wikipedia.org/wiki/Common_Rep

What you are looking for is the Common Reporting Standard: https://en.m.wikipedia.org/wiki/Common_Reporting_Standard https://en.m.wikipedia.org/wiki/Common_Reporting_Standard So the information is still being exchanged, but as i understand it most stuff is essentially handled by local tax authorities, so for most people they don't need to care about it or fill out forms.