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What should I do if I made a mistake on my tax return after it has been sent to the tax office ?

If, after submitting your tax return, you realize that you have omitted certain details or declared an incorrect amount, you have the option to contact the tax officer at the tax office you are affiliated with, either by phone or by email, to explain the situation.

Please follow this link if you are not sure which tax office you are affiliated with : https://taxx.lu/simulation/bureau-imposition

As long as the return has not yet been processed and finalized by the tax office, the officer handling the tax file can often provide guidance on how to resolve the issue by providing necessary evidence, thereby avoiding formal recourse.

What should I do if the result on taxx.lu differs from the tax statement received by Tax Authorities?

Updated on: 20/02/2024

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