Personal taxation · Luxembourg
Withholding tax refund in Luxembourg: the annual balance
The tax withheld from your pay and the annual tax assessed on the full file are not always the same. To understand the balance, you need to compare the tax for the year with the withholding tax and advance payments that can be credited, after checking income, expenses and tax credits.
Financial Services Luxembourg · Licensed accountant · Head of the firm: Mickaël LOC. Editorial update: .
The balance formula
The balance is not obtained by adding up deductible expenses alone. The tax must first be assessed, then reconciled with the payments already made for that same year. A deduction reduces a base; a tax credit works according to its own regime; withholding tax is an amount already collected.
Fictitious example: assessed tax of EUR 8,200, creditable withholding tax of EUR 7,700 and advance payments of EUR 1,000 give an arithmetical surplus of EUR 500, subject to the other items of the calculation. This is not a forecast of when payment will be made.
Possible causes of a difference
- Several employers, pensions or changes in pay.
- Rental income, activities or foreign income not reflected in the withholding tax.
- Expenses and options taken into account only after filing.
- Tax credits already granted or to be regularised.
- Advance payments allocated to another year or to a different reference.
Avoid double counting
Some deductions and flat-rate allowances are already built into the withholding tax. Reporting them in the tax return does not necessarily create an additional benefit of the same amount. A saving is measured between two consistent calculations, not by automatically multiplying a certificate by a rate.
The tax class and the withholding rate must also be distinguished from the annual taxation options. The same data can lead to different withholdings during the year and then be reconciled at assessment.
How to check
Gather all certificates, the details of the advance payments and the full tax assessment notice. Compare the year and the persons concerned before discussing the amount. If a difference remains unexplained, separate the question of the tax calculation from that of how payments were allocated.
The firm's fee simulator does not calculate this balance: among other things, it excludes personal tax credits and withholding tax. It must therefore not be presented as a refund calculator.
The firm’s other tax engagements
Depending on your situation, the firm also handles tax, VAT and payroll, the regularisation of late tax filings and assistance during a tax audit. Fees are listed in the firm’s fee grid.
Official sources and scope
- ACD: tax scales and official calculation
- ACD: determining net employment income
- ACD: tax advance payments
The rules apply to the year and profile concerned. Examples flagged as fictitious explain a method; they are not an individual validation. The documents and options of your file are covered by a separate engagement.