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Questions regarding the "Tax situation" form on taxx.lu.
Is it possible to use taxx.lu if my household receives income from abroad?
Yes, it is. You have to go to the "Tax situation" form and then in the "The patricular situations in 2018" category you have to tick "Some or all of my income was generated outside of Luxembourg". You must then indicate for each income whether it comes from Luxembourg or from abroad.
How can I make an individual taxation on taxx.lu in case of a partnership (PACS)?
Indicate "Single" as your civil status. Make two statements (one for each person) Divide your loans (50% on one statement, 50% on the other)
What are tax advances?
Tax advances are quarterly advances that can be requested by Tax Authorities. If you are in this situation, enter the annual amount in field "I paid tax advances". Most people do not have to pay tax advances, so if this is your situation, leave the box blank. This is NOT the amount of tax withheld on your salary certificate!