Cross-border worker Belgium · Luxembourg
34 days outside Luxembourg.
Every other day, proven.
The BE–LU tax tolerance allows a limited number of days worked outside Luxembourg. What gets challenged afterwards is the opposite: your presence in Luxembourg on all the other days. The app counts the former day by day and keeps, for the latter, the receipt, the tank of fuel or the toll that proves them.
An example of a year under way: 12 days already taken, 22 still available. No percentage — an allowance is spent in whole days, so it is read in whole days.
The rule
What the app counts, and what it does not
34
Days outside Luxembourg
Every day marked “Outside Luxembourg” uses one. That is the only thing that eats into this allowance.
26
Days off
Counted separately, on their own allowance. A day off is not a day worked elsewhere: it does not touch the 34.
11
Luxembourg public holidays
The employer's calendar, not the one where you live: the Belgian 21 July and 11 November are ordinary working days here.
Both allowances are editable year by year, from the calendar. Counting and proving are two separate things: only a day marked “Outside Luxembourg” eats into the allowance, and it is the days worked in Luxembourg that need proof — attaching a file never uses anything up.
How it works
Three steps, in this order
-
01
Mark the day
The calendar already knows the weekends and the Luxembourg public holidays. You only touch the days that are out of the ordinary, and the counter follows along.
-
02
Attach the proof
Till receipt, fuel, restaurant bill, travel ticket. Photographed from the computer, or from your phone by scanning a code on the screen. The date read on the document decides the day.
-
03
Account for it
A PDF of the year for the file, or a read-only link to send your accountant: they see the calendar and the proofs, with no account and no way to change anything.
What is inside
Four screens, nothing more
Year calendar
Twelve grids, one colour per status, a red outline on the days whose proof is still missing. Below, the list of what is left to settle.
In Luxembourg Outside Luxembourg Day off Public holiday (LU)
Scan a document
The document is filed on the date printed on it. Automatic reading is optional and off by default: without it, the screen simply asks for the date. A code on screen lets you photograph it from your phone.
Read-only links
An address to give your accountant or the tax office: read-only, limited to one year if you want, with an expiry date and a button to revoke it.
PDF export
Every working day of the year, with the status, the note, the name of the proof of presence in Luxembourg or the word MISSING, and the counters in the footer.
Your documents
A till receipt says a lot about you
It carries your name, the shops you visited and the dates. So the files stay on the server hosting the app, served to your account only, and nothing is sent anywhere else by default.
Automatic reading of documents is the only moment a file leaves the server. It is switched on explicitly, switched off just as fast, and the app works entirely without it.
Getting started
An account, an email address, and an empty calendar with fresh counters. Every account has its own days, allowances and files.