At Wisniowsky.nl, we have been supporting entrepreneurs in running their businesses in the Netherlands for over 11 years. We are a modern accounting office based in Rotterdam, founded on the belief that accounting, administration, and financial advisory can be simple, integrated, and accessible online from anywhere.
years on market
active companies
different coutries
Accounting in the Netherlands – easy, online, transparent
We support over 500 active businesses and private clients with Dutch tax residency. We understand the needs of Polish entrepreneurs operating in the Netherlands — including ZZP freelancers as well as BV and VOF companies — and our clients come from more than 30 different countries.
This experience allows us to understand how important communication, trust, and clarity truly are — regardless of language, culture, or type of business.
We offer comprehensive online accounting services in the Netherlands, including payroll administration, annual tax returns, and financial advisory.
With our HeyZZP app, you can issue invoices, record expenses, and monitor your finances from anywhere in the Netherlands — without leaving your home.
A complete financial ecosystem
Imagine all your financial matters coming together in one integrated ecosystem.
That’s exactly how Wisniowsky.nl works — like a circle where every element complements the others:
- accounting and administration for businesses in the Netherlands,
- consumer and business loans as well as mortgage and financing advisory,
- private and business insurance, including disability insurance (AOV),
- wealth management and long-term financial planning,
- process automation with platforms like Bol.com, Amazon, PayPal, and many others,
- the HeyZZP app for invoices, expenses, and mileage tracking included in the service,
- educational materials and tutorials showing how easy it is to start and run a business in the Netherlands,
- regular newsletters and deadline reminders,
ensuring you are always one step ahead of the Belastingdienst.
This is not just a list of services — it is a complete, closed ecosystem where you have full control over your business.
Why entrepreneurs choose Wisniowsky.nl
- Over 11 years of experience on the Dutch market
- 500+ businesses under ongoing support
- Full online accounting from any city in the Netherlands
(Amsterdam, Eindhoven, Rotterdam, Groningen, Maastricht…) - Process automation – faster, cheaper, and error-free
- Quick accounting consultations and longer online meetings whenever you need them
- Ongoing support and an individual approach – we serve only our long-term clients and also assist them with private matters in the Netherlands
- Honesty and transparency – we always communicate clearly, and in matters involving the Belastingdienst, we represent you directly
- Trusted by international clients – we manage companies owned by people from more than 30 nationalities
Nasze podejście
We are not a typical office that “just processes invoices”. For us, accounting in the Netherlands means strategy, structure, and the entrepreneur’s peace of mind.
At Wisniowsky.nl, we build partnership-based relationships, help shape your company’s financial path, and support you at every stage — from the first invoice to investments and long-term planning.
For us, this is more than a profession — it is a daily passion for analysis, integration, and growth. Because we know that your finances are not just numbers, but your story, your goals, and your peace of mind.
Are you looking for a reliable accounting office in the Netherlands?
Write to us and see how simple online accounting with Wisniowsky.nl can be.