Tax Controversy provides for the correct handling of a dispute with the Tax Department, from the outset. In the event of a dispute with the tax inspector, being in control of the tax position is of major importance, i.e. the strong and (possible) weak points in the tax positions are known and controlled or can be mapped out in the short term. In the event of a dispute with the tax authorities, you will be able to properly defend yourself from the start.

Letter of questions and requests for information

The Tax Authorities have far-reaching powers where the collection of information is concerned. Tax subjects are, in principle, obliged to answer and cooperate with investigations, even if that were to worsen their tax position. Yet, in practice, there could be possibilities of handling these obligations smartly. The Tax Controversy team has a lot of experience in handling this. This can range from a simple letter of questions, to requests for information from abroad or (tax) audits.


Complex audits during which the tax authorities investigate the entire administration are very rare. It does still happen in the event of strong evidence of fraud, yet the tax authorities mostly limit their action to a partial investigation, often in the form of a random check. Random checks are the subject of much debate. The Tax Authorities tend to accept this at face value, yet in many cases this is not desired or correct. Engaging a Tax Controversy expert from the first letter of questions or audit announcement is of paramount importance. Errors made in the beginning are often difficult to repair at a later stage.

Objection to the tax inspector and appealing in court

Disputes with the tax authorities tend to escalate quickly; one of the main techniques within Tax Controversy is to remain on speaking terms with the tax inspector handling the case. If you do not agree with a return, you have the option of lodging a notice of objection. This must be arranged within 6 weeks of the assessment date. When objecting, you have certain rights, such as inspection of your file. If you do not agree with the decision on the objection, it is possible to appeal by bringing a legal action. Although legal assistance is not mandatory, engaging an expert is highly recommended. The Tax Controversy team is pre-eminently competent to carry on proceedings, including appeals, to the Supreme Court or otherwise.

Assistance in the event of fines and collection

Tax fines can be very high. Therefore, in the event of a fine, engaging an expert as soon as possible is the right thing to do. In many cases, this leads to a (very substantial) reduction.

If the tax owed cannot be paid in time, action needs to be taken. This is to prevent liabilities, as well as to agree on a possible payment arrangement.

Tax Accounting

Tax Accounting

Tax Accounting

Tax Accounting is about establishing and checking the tax position of your organisation. Through...




You want to fulfil your tax obligations without spending any more time than necessary. In...

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Our expertise

Tax Reporting and Control Services

International operating companies are often confronted with taxes and with the tightened reporting duties involved in this. In the consolidated and stand-alone annual accounts you draw up, this results in a ‘tax position’. The tax position is calculated through the interaction of IT systems, external accounting standards and tax regulations, which are subject to continuous change. Are you absolutely certain that all taxes are properly withheld and duly paid? And do you process these taxes without any tax and financial risks?

Tax Accounting

Tax Accounting is about establishing and checking the tax position of your organisation. Through Tax Accounting, you will gain an insight into the tax position within your annual accounts. This sounds straight-forward, but it could not be further from the truth, particularly if you operate in multiple countries. Do you meet the correct requirements and what possibilities do you have to optimise them? The specialists of Mazars will prepare you for a statutory audit by an auditor, the Tax Authorities or other authorities.