The Dutch Tax Authorities have sent the forms on which you must declare your global income. Your global income is your income in the Netherlands and from all other countries combined. You are required to provide this information.

You will only be asked to declare your global income if either you or your partner live outside the Netherlands and receive a tax allowance, such as the healthcare or childcare allowance. You will also receive this form if you or a family member has lived outside the Netherlands and paid a ZVW foreign contribution to the Central Administration Office (CAK).
Your global income is your combined income from the Netherlands and all other countries combined. For example, if you enjoy profits abroad and a fixed salary in the Netherlands.
The following amounts are determined using your worldwide income:
Any amounts that you have already received plus any contributions that you have previously paid are only provisional and can only be definitively determined after your world income has been declared. After this statement has been submitted you will receive a decision from the Tax Authorities. This will state your global income, divided into income taxed both in the Netherlands and abroad.
Important! If you do not declare your worldwide income, you must, among other things, repay any allowances that you have already received.
If you are unable to return the statement on time, it is important to request a delay before the final delivery date on your statement.

In a letter to the House of Representatives, the State Secretary for Finance has outlined the current situation regarding the introduction of the right of access to tax records. This right of access will be introduced in phases.
Read more