A quick guide to filing your income tax online

To file online, you need an ID reader, your electronic ID card (the one with a chip), and the PIN code you received with your id card. If you lost your PIN code, the commune can give you another one with your puk code. Setting up the software for the e-card reader may be the trickiest part. You have to use one of the traditional browsers (Internet Explorer, Firefox or Chrome).

My identity card doesn’t have a chip

This is usually the case if you live abroad. You will have to apply for a token; you can register with FEDICT ( to identify yourself with some identification such as your national number (on the back of your ID card or your tax return) and the number of your ID card. You choose a username and a password and receive an email with a link to confirm.

Your ‘token’ arrives by mail about 10 days later. It’s a card with 24 codes like SOLIPE or WAPERI. When you log on to Tax-on-web, or when you sign in, you will be asked to identify yourself with e.g. code 13; just type WAPERI and you are in.

How does it work?

When you log in, you open your own Taxbox on Myminfin, and you find something that looks like an actual tax return (it is the document préparatoire that comes with your paper tax return.

You will see that when the tax authorities already have information, the boxes will already be filled out. That is the case for the identity of your dependent children, the cadastral income of your house, your salary and the wage withholding tax or your titres services…

On each page you can click and get online explanation, add a comment or attach a PDF file. The help files don’t offer much more information than the booklet you receive with your paper form.

Calculate the tax

Before you sign and finalise your tax return, you can calculate how much tax you will have to pay. It is a rough estimate because it doesn’t take into account complicated issues like cross-border workers, overseas income, etc. That calculation isn’t the tax bill; that will come later.

Don’t forget to sign

The tax return is not filed unless you sign with your PIN code (if you have an electronic ID card) or with your access code. Spouses and partners who file a joint tax return must log on and sign separately with their PIN
code or access code. If you don’t sign, the return is not filed. When you have both signed, you receive a confirmation of the date and time of filing. I suggest you print it or save a copy.

You can always check the summary of your tax return in your Taxbox. It isn’t a bad idea to save a copy as well. You don’t need to send a copy of the confirmation or the PDF summary.

Once the tax return is filed, you can still correct your tax return online until 13 July. If you need to change anything after that date, you will have to contact your local tax office. You can call them or just send them a letter saying: “in code 1030-10, please replace 1,000 with 1,500”.

Categories:   Administration


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