Personal taxation · Luxembourg
Self-employed tax return in Luxembourg: Form 100
A self-employed person's personal tax return starts from a business result that has been determined and documented. It must then include the other income and the household's situation. In its quote, the firm distinguishes bookkeeping, the determination of the profit and the preparation of Form 100.
Financial Services Luxembourg · Licensed accountant · Head of the firm: Mickaël LOC. Editorial update: .
Business result versus household income
Turnover is not taxable profit. Receipts, business expenses and fixed assets must be reconciled according to the applicable method of determining profit. Private transactions must be separated out before the personal tax return is prepared.
The activity may fall into different categories, in particular commercial profit or liberal profession. The name of the occupation is not always enough to decide: the services actually performed, the organisation and the facts of the file all matter.
The scope to agree
- Reconstruction or keeping of the accounts, if it is part of the engagement.
- Calculation of the result and preparation of the business annexes required.
- Reconciliation of the contributions and tax advance payments made.
- Inclusion of salaries, pensions, rents or spouse's income relevant to Form 100.
- Filing and review of the tax assessment notice only within the agreed scope.
Documents and an example of a check
Prepare the financial statements, business bank statements, expense receipts, fixed asset register and social security and tax statements. The public form is used only to qualify the request; documents will be sent through the agreed channel.
Fictitious example: an invoice for a computer is paid from a private account. This does not rule out examining it as a business expense, but the payment alone does not allow an immediate full deduction. The allocation and treatment of the equipment must be determined.
Accounting, VAT and personal income tax
These obligations have separate timetables and bases. A VAT result is not automatically the income to report on Form 100. Nor does the personal tax return replace the business accounts or the tax return of a separate company.
Tell us the year, the activity, the quality of the accounts available and whether you have received a letter from the Luxembourg Inland Revenue (ACD). The price depends on the work still to be done, not only on the number of pages in the form.
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: assessment based on a tax return
- ACD: income tax law (LIR) texts by year
- ACD: forms for individuals
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.