EHP is a document, that the Dutch tax office requests to declare your income which is not taxed in the Netherlands. This means, that you have to confirm that you had or had not income in other country (such as in your home country).
How to make sense of the british tax system?
Do you work in Austria and are unable to grasp their tax system? Should you file a tax return? How would you do it? What do you need for it?
If you are employed in Austria chances are that you are entitled to a tax refund. What documents do you need for that?
This confirmation of European Tax Status for the given tax year is issued by the tax office in your country, the place being dependent on your permanent residence. You must request the form E9 with the condition being a filed tax return for the given year.
If you file a tax return in austria you can find out the tax office address very easily. In your Lohnzettel document you will find a line called “Finanzamt Nr.”