Combining studies with a first job, a paid internship, or part-time work raises specific tax questions, both for the student and for their parents if they're still financially dependent on them.
The general filing thresholds also apply to students
There's no special tax regime for being a student: the same general income tax filing thresholds apply as to any other taxpayer (€22,000 with a single payer, or lower thresholds with multiple payers under certain conditions). Many students with part-time or seasonal jobs don't reach these thresholds and therefore aren't required to file, though it sometimes pays to file anyway.
Why it almost always pays for a student to file even when not required
Since student jobs tend to pay low salaries, it's very common for the withholding applied during the year to exceed the actual income tax owed, resulting in a refund. In these cases, even though there's no legal obligation to file, doing so lets you recover that over-withheld money.
The impact on parents' deduction for dependent children
This is the point that causes the most confusion: if the student files their own tax return and earns income above a reduced threshold (a fairly low limit, not the general €22,000 threshold), their parents can lose the right to claim the minimum allowance for dependent children on their own return, which increases the parents' tax bill. This specific threshold for keeping the right to the dependent-child allowance is much lower than the general filing threshold.
Why it's worth doing the math as a family before filing
Before a student files individually, it's worth calculating whether the savings the student would gain (recovering their own withholdings) outweigh the possible loss of the dependent-child allowance on the parents' return, since in some cases the combined result can be unfavorable for the family as a whole.
Scholarships: a different case from a salary
It's important to distinguish between employment income (subject to the general income tax rules) and certain study scholarships, which can be exempt from taxation if they meet specific requirements (awarded by public entities or certain nonprofit organizations, for pursuing formal studies, within certain limits) — a different tax treatment from an ordinary salary.
Simulate your withholding as a working student
Our income tax calculator lets you estimate your withholding and effective rate based on your salary, useful as an initial reference before deciding whether filing is worth it for you.