Proprietorship / Eenmanszaak / ZZP

Looking for a bookkeeper for your sole proprietorship (eenmanszaak)?

It is important to outsource your income tax return to an bookkeeper who is aware of the latest rules and deductions. As an entrepreneur, you are obliged to file a tax return.

As a self-employed person, you pay income tax on your taxable income. Just like a private individual, you file these income tax returns once a year. As an enterprising self-employed person, you are entitled to various deductions. These deductions are deducted from the profit so that your taxable income is reduced.

How we work


You will receive a quote from us within 24 hours. If necessary, we will hold an intake online or by telephone.


We request authorization and documents may be submitted via email or a secure environment.


As soon as we have received all documents, we will start preparing the concept.


When the concept is ready, we can immediately submit it to the Tax Authorities after approval.


After receiving the draft, an appointment can optionally be easily scheduled online.

Our guarantees for you

Clients about One Day Finance


One Day Finance takes the time for your declaration, financial or tax question. This naturally starts with an extensive intake interview. During this conversation we will provide a good picture of your situation.

Fast response​

We respond within 24 hours. In addition, you always have contact with one advisor from start to finish. Even after that, you can simply contact your advisor to ask questions.

Clear and understandable

One Day Finance's advisors communicate clearly and understandably. We always schedule a meeting online. During this meeting, we go through the declaration or issue together. We will of course answer all your questions.

Complete help with your tax return. For one fixed price.

Business owner Small

200 Excluding VAT
  • < € 10.000 revenue
  • Eenmanszaak/ZZP/Proprietorship
  • Income Tax Return
  • Balance Sheet & Profit & Loss Account
  • Without staff

Business owner

300 Excluding VAT
  • € 10.000 - € 100.000 revenue
  • Eenmanszaak/ZZP/Proprietorship
  • Income Tax Return
  • Balance Sheet & Profit & Loss Account
  • Without staff

Business owner Large

400 Excluding VAT
  • > € 100.000 revenue
  • Eenmanszaak/ZZP/Proprietorship
  • Income Tax Return
  • Balance Sheet & Profit & Loss Account
  • Without staff

From € 125,-

Looking for our Income Tax Support?

Let me introduce myself

My name is Alwin Christianen, Financial Advisor and entrepreneur. As a Financial Advisor I have several years of experience, both as a self-employed person and as an employee. Good and pleasant communication is extremely important to me. In addition, I am customer-oriented, enterprising and punctual!

One Day Finance takes the time for each declaration, we use fixed rates and we do not have small print. With the right software solutions and real attention, we ensure a smooth declaration.

Even voorstellen

Our Guarantees

An intake online or rather personal contact?

Here at One Day Finance we understand that everyone has their own preference for communicating. One would like a personal conversation and the other would like to deliver his data as quickly and optimized as possible.

We need a number of information to prepare a 2021 income tax return. Based on this information, we can complete a correct tax return and request the correct documents.

Do you opt for first personal contact or do you opt for an online intake?

One Day Finance aangifte inkomstenbelasting 2021

Deductions sole proprietorship

There are various deductions for entrepreneurs. Some deductions are:

  • Self-employed and starters deduction (when spending at least 1225 hours on the company)
  • SME profit exemption
  • Small Business Scheme (KOR)
  • Investment deduction (for investments larger than € 2,300.00 (except vehicles))
One Day Finance Controle afgelopen 5 jaar

Would you like to have help? Choose one of the following three options​

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