Our Ventures
At IWD Holding B.V., we are actively involved in building and supporting businesses that make a difference. Here's a look at our key projects:

InvoiceHappens.com: Effortless Invoicing. Simply Free.
Send beautiful invoices instantly. No sign-ups. No fees.
Tired of clunky, expensive invoicing software? InvoiceHappens is the radically simple solution designed for modern entrepreneurs. Create professional invoices in seconds directly from the homepage – no account needed to start. We leverage cutting-edge, cost-efficient technology to offer a premium experience, completely free for the first 100,000 entrepreneurs.
Key Features:
- Instant Creation: Start invoicing immediately, no friction.
- Broad Payment Support: Accept bank transfers, credit cards (Visa, Mastercard), Apple Pay, iDeal, Klarna, SEPA, PayPal, and more.
- Recurring Invoices: Automate regular billing with ease.
- 1-Click Cloud Sync: Optionally save, send, and manage invoices securely.
- Elegant Design: An intuitive, Apple-inspired interface.
The Mission:
Our goal is to help entrepreneurs send 1 million invoices for free, removing barriers and making business administration beautiful and effortless.
Visit InvoiceHappens.com →
Studio 44: Premium Co-Working Reimagined.
An Exclusive Workspace for Entrepreneurs on the Maliebaan.
Studio 44 is more than just office space; it's a curated community. Born from the collaborative spirit of the former 'Forty Hub,' this premium co-working space offers a luxurious and productive environment designed specifically for entrepreneurs. Located on the prestigious Maliebaan, Studio 44 provides the ideal setting for focus, networking, and growth.
Highlights:
- Prime Maliebaan location.
- Luxury amenities and design.
- Community-focused, built by entrepreneurs.
Keuze.nl: Pioneering Consumer Savings.
Founder & Advisor to a Leading Dutch Comparison Platform.
IWD Holding's founder, Sander, originally established Keuze.nl, growing it into one of the Netherlands' most trusted energy comparison websites. Helping thousands of households save significantly on their energy bills, Keuze.nl stands as a testament to building user-centric platforms that deliver real value. Sander continues to contribute his expertise as an advisor to the board.
Impact:
Demonstrated success in building scalable, consumer-facing technology platforms in the competitive Dutch market.
Visit Keuze.nl →
Energy Data Services: Powering Smarter Strategies.
Providing Dutch Energy Companies with Actionable Market Intelligence.
Leveraging deep expertise within the energy sector, IWD Holding provides specialized market data services to energy companies operating in the Netherlands. Our insights enable these companies to develop more accurate, competitive, and effective pricing models in a dynamic market.
Focus:
Empowering data-driven decision-making within the Dutch energy industry.
Learn About Data Solutions →