Expatax provides specialized services for a particular international corporate Clients in the area of: 1) Immigration – work and all type of stay permits 2) Arrival administration matters – registration of stay, tax applications 3) Assignments to Poland – reporting of posting 4) Assignment tax and social security planning 5) Various settling-in and destination services 6) Shadow payroll 7) Annual tax returns 8) Leaving services 9) Social security – full compliance and planning including the EU coordination rules and international Totalization Agreements including A1, EHIC and S1 applications 10) Advisory on any of the above.