Prepare for a tax audit by identifying the taxes, periods and subjects being examined. Organise original records, record disclosures and divide tasks clearly between advisers. A tax lawyer can help with a disputed information request, possible penalty or legal classification. Announcement of an audit is not a final finding of fraud. This guide concerns tax inspection and practical preparation; an information decision, assessment or criminal investigation may require additional, separate steps.
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1. Read the scope of the audit
Record the purpose, type of investigation, taxes and periods from the announcement. Section 7.5 of the Handboek Controle describes their importance in written notice. Seek clarification if it is unclear whether a limited subject or wider records are examined. A VAT audit for one period is not automatically an investigation of every tax position of every group company.
Keep the announcement and confirm practical arrangements about contacts and availability. Do not assume that every subject mentioned orally is definitively outside scope. If scope changes, ask what is now examined and record the change. This later explains which questions your answers addressed. Scope helps organise the work; it is not a reason to ignore relevant requests without assessment.
2. Organise existing records without rewriting history
Gather returns, accounts, contracts, invoices and relevant bank records for the years concerned. Retain original files and versions. A corrective calculation must be distinguishable from records that existed at the time. Do not retrospectively alter documents without recording it because a tidier file seems favourable. Verifiability of what happened matters more than an apparently flawless overview.
List documents present and missing. Identify records held by a former accountant, software supplier or another party. Agree who requests them and the time needed. A missing file is a practical issue to explain, not a reason to invent an unverifiable replacement account. Have an adviser establish how uncertainty or a nonexistent document should be described carefully.
3. Divide accounting work and legal assessment
An accountant can reconstruct figures and reconciliations while a tax lawyer assesses a legal question, evidence or penalty risk. Agree who receives questions and approves responses. Share earlier correspondence with both where necessary and appropriate for the engagement. Contradictory replies by different staff may create confusion that coordinated working prevents.
Also identify who explains business processes in meetings. Someone operating software may not know why a tax choice was made. Conversely, an adviser cannot infer all practical operations from a ledger. Set unknown answers aside for checking. Saying you will investigate is more careful than presenting an estimate as an established fact.
4. Answer information requests specifically and record disclosure
Government guidance identifies the duty to supply data when the Belastingdienst asks. If unclear, ask which subject is intended and link each answer recognisably to its question. Record date, recipient, files and explanation for every disclosure. Keep a full copy. You can then assess whether a report actually rests on information you supplied.
If you consider a request too broad or it seeks confidential data with a special status, have its legal basis and appropriate response assessed. The legal solution is not automatically refusing everything. Equally, transferring every mailbox without thought may be unfocused. A lawyer can distinguish necessary data, requested statements and legal assessment of the request.
5. Recognise when penalties and proof become separate issues
Penalty guidance distinguishes questions about tax due from those about infringement and culpability. If an audit raises intent or gross negligence, targeted legal assistance is appropriate. A general cooperation duty does not mean every statement must be made without further assessment. Equally, do not ignore ordinary accounting requests by generally invoking silence.
Missing information or deficient records may lead to an informatiebeschikking. The Belastingdienst’s proof guidance describes objection and potential consequences if it becomes final. Read such a decision immediately and protect its own deadline. An ongoing audit does not make a formal decision an optional interim letter to discuss later with the assessment.
6. Check findings and later decisions separately
When a report or proposed adjustment arrives, compare its facts with records and earlier replies. Specify which account you consider incorrect and the supporting evidence. Calling records untidy does not answer every legal question about an adjustment. Identify for each subject the disputed facts, figures and law.
A report and a later assessment or penalty decision are different documents. Responding to findings does not automatically replace timely objection to the actual decision. Display new deadlines in the file. If considering an agreement or settlement, have its exact scope assessed, including years and subjects. General agreement with a discussion should not inadvertently suggest a much broader arrangement.
7. Fictional example: invoices held by a previous accountant
Suppose a business receives VAT questions and finds some invoices still with its previous accountant. The director wants to answer from memory to cooperate quickly. An uncertain recollection may then be read as established fact. First identify the missing source and how it can be supplied.
The business lists documents, requests originals and records with its adviser which answers are already verifiable. Legal classification is assessed separately. This fictional example does not say every missing file causes a penalty or reversed proof burden. It shows why orderly disclosure and honest uncertainty provide a better audit basis than presenting later unsupported reconstructions as original records.
8. Checklist before the first audit meeting
Use the audit scope as your starting point and divide tasks before the meeting. Identify missing documents and possible urgent decisions. Maintain one continuous correspondence and disclosure register throughout the investigation.
- Announcement with taxes, periods, subjects and practical arrangements.
- Original returns, accounts, invoices, contracts and relevant bank records.
- Missing-file list identifying holder, request action and expected availability.
- Contact person, accountant’s role, legal issues and coordination of statements.
- Disclosure register, report responses, decisions and separate objection or correction deadlines.
9. Keep a reproducible record of selection, explanation and follow-up
Alongside the accounts, keep an investigation log: question, selection used, answer, files supplied and unresolved points. For an export, record period, filters and accounting version as well as filename. Otherwise a difference between files may wrongly appear to be a turnover difference. Write a new explanation as a new explanation; do not silently alter old data to make files reconcile. The guidance on information requests helps identify the specific question.
In a fictional audit, a business owner first supplies an export including cancelled invoices, then one containing only final invoices. Totals differ. They preserve both versions and explain the filter difference through reconciliation with the original accounts. This enables checking without pretending the first file never existed. It does not establish that every invoice received correct tax treatment; that substantive question requires the underlying documents.
Check whether meeting notes distinguish observation, your explanation and provisional conclusion. A request for missing documents, a formal information decision and a proposed tax settlement agreement require different follow-up choices. Use the Dutch-language file tool to organise later decisions and attachments, and examine the objection procedure when a challengeable decision arrives. The log replaces no formal response and guarantees no audit outcome.
Frequently asked questions
Does a tax audit automatically mean fraud is suspected?
Do not infer this from the announcement alone. Read the actual purpose and scope and have separate penalty or criminal signals assessed.
Can my accountant handle everything alone?
That depends on the questions. Figures and accounts may require different expertise from a disputed legal basis, information decision or allegation of intent or gross negligence.
May I silently replace missing records retrospectively?
Keep originals and reconstructions distinguishable. Record uncertainty and sources and have explanations assessed; do not present a new reconstruction as an old original.
Does responding to the report count as objection to the assessment?
Do not assume so. Report and imposed decision are different steps. Recheck the assessment’s deadline and required procedure.
Sources
These sources relate to this page. For a specific case, check current rules and your own documents.
- Belastingdienst — Handboek Controle (november 2017), 7.5 Accessed: 2026-10-24
- Rijksoverheid — rechten en plichten belastingbetaler Accessed: 2026-10-24
- Belastingdienst — bewijslast Accessed: 2026-10-24
- Belastingdienst — boete Accessed: 2026-10-24
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Editorial team Tax law in the Netherlands
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