Summary
Authorizing a tax advisor to manage your fiscal affairs in the Netherlands is a secure and structured process. This article explains how individuals can grant such authorization through two official channels: using a government-issued activation code or the DigiD (Digital Identification in the Netherlands) portal. It also clarifies the purpose of this authorization and introduces the main institutions involved in handling personal tax data through “My Tax Service” and “My Allowances,” the two key government platforms for Dutch taxpayers.
Context and Scope
This article is based on a professional communication issued on 21 July 2025 by a Dutch financial advisory firm. The message requested authorization for a certified tax consultant to access and manage client tax information held by the Dutch Tax and Customs Administration.
The scope includes:
- The goal of the authorization request.
- The two methods of activation (via government letter code or DigiD).
- The definition of relevant Dutch terms appearing in this context.
The information reflects verified procedures valid as of 5 October 2025 (Europe/Amsterdam).
Factual Narrative
Purpose and Background
A Dutch financial advisory firm sent an official request for authorization so a registered tax professional could assist in managing client tax obligations. The authorization allows the advisor to view, file, or audit Income Tax, National Insurance contributions, and any Allowances applicable to the client.
This formal approval enables the advisor to securely access data already stored by the Dutch Tax and Customs Administration, through the online platforms “My Tax Service” and “My Allowances.”
The process is designed to balance accessibility with security, ensuring that only trusted, certified advisors can handle sensitive tax information on behalf of their clients.
Activation Methods
The Dutch Tax and Customs Administration provides two ways to activate such authorization:
- Government Letter Code (translated from Dutch):
The taxpayer receives an official letter containing a unique code. By sharing this code with their advisor, they authorize the advisor to activate access through the government system. - DigiD Portal (Digital Identification in the Netherlands):
Taxpayers with a DigiD account can immediately activate the authorization by visiting https://machtigen.digid.nl. After logging in, they must select “My authorizations”, locate the pending request from the advisory firm, and approve it.
Both options meet Dutch digital identity and data protection standards. They ensure that authorizations are personal, traceable, and verifiable, aligning with the Netherlands’ high standards for online government security.
Entities & Roles Index
- Dutch financial and payroll advisory firm: The organization requesting client authorization to manage tax affairs.
- Certified fiscal advisor and registered tax consultant: The professional acting on behalf of the firm to process or audit tax information.
- Dutch Tax and Customs Administration: The government authority responsible for collecting taxes and administering allowances.
- DigiD (Digital Identification in the Netherlands): The secure login system used to access and approve government services online.
- Government Letter Code: A unique code issued by the Dutch government, used to activate authorization for a third party.
Linguistic Definitions and Translations
“Mijn Belastingdienst”
(translated from Dutch: “My Tax Service”)
Official online portal of the Dutch Tax and Customs Administration, where individuals can file, review, and manage their tax affairs.
“Mijn Toeslagen”
(translated from Dutch: “My Allowances”)
The official Dutch government website for managing allowances such as housing, healthcare, and childcare benefits.
“Machtigen.DigiD.nl”
(translated from Dutch: “Authorize with DigiD”)
The government platform that allows users to approve or manage authorizations for digital access via their DigiD account.
“Register Belastingadviseur”
(translated from Dutch: “Registered Tax Advisor”)
Official professional designation for certified Dutch tax specialists who meet regulatory and educational standards.
Practical Conclusions
Granting authorization to a tax advisor in the Netherlands is a well-defined and protected process that ensures efficiency while safeguarding privacy.
Taxpayers can choose between two activation methods—using a government-issued letter code or the DigiD portal—both of which comply with strict national cybersecurity and identity verification standards.
This digital framework not only supports secure collaboration between clients and registered advisors but also reinforces transparency in how personal tax data is accessed and used within official Dutch systems.
Sources
- https://machtigen.digid.nl — Official Dutch government portal for granting or managing DigiD authorizations.
- https://www.belastingdienst.nl — Official Dutch Tax and Customs Administration website providing tax and allowance services.
- https://www.rijksoverheid.nl — Official Dutch government site offering verified information on digital identification and citizen services.
- No additional external sources were used; all content is derived from verified official communications and Dutch government portals.
My Diary - Leonardo Cardillo 