AI for individuals & self-employed

Work smarter.
Not harder.

Minus Opus develops practical AI tools that save you time — so you can focus on what truly matters.

Explore the tools Our story
Minus Opus
80%
Less routine work
∞
More focus
About Minus Opus

Technology that works for you

Minus Opus is a Belgian platform that builds AI solutions for people who are not IT experts. Individuals, freelancers, small businesses — everyone deserves access to smart tools.

Under Minus Opus, multiple products are growing: from rent index calculators to automated administration. Simple, reliable, multilingual.

01
Simplicity
No tech jargon. Tools everyone understands immediately.
02
Reliable
Based on Belgian legislation and up-to-date data.
03
Multilingual
NL · FR · EN — for all of Belgium and beyond.
04
Impact
Gaining time for what matters — or spending it on what generates income.
"Technology that gives back hours and removes frustration — so you can enjoy more of the time you have."
— Minus Opus philosophy
Our solutions

Tools that truly make a difference

Every product is built around one goal: saving you time and effort, without sacrificing quality or accuracy.

Available now
SmartCalculators.be

Calculate your rent indexation in seconds. Accurate, fast and free — in Dutch, French and English.

Visit the tool
In development Coming soon
SmartTax

An AI assistant that guides individuals and non-profits through their personal income tax return — step by step, no fiscal knowledge required.

Coming soon
Custom On request
Tools on request

A specific challenge in your organisation or sector? We build a targeted AI tool tailored to your needs.

Get in touch
Our approach

Simplicity
is our
strength

We believe that good technology is invisible. You notice it in the result, not in the complexity.

01
Identify the problem

We always start with a real frustration: which task costs you unnecessary time or energy? That is our starting point.

02
Build the simplest solution

No superfluous features. Every tool does exactly what is needed — nothing more, nothing less. Speed and clarity are central.

03
Validate with real users

Our tools are tested by ordinary people, not technicians. Feedback determines the direction of every next version.

04
Scale and refine continuously

Minus Opus grows with its users. New tools, better integrations and ever smarter automation.

Ready to get started?

Let AI
work for you

Have a question, an idea, or want to stay informed about new tools? We'd love to hear from you.

Send a message Try SmartCalculators
DISCLAIMER
The tools and information on this platform are provided for general information purposes only and are intended solely as a guide. Minus Opus and its products do not provide legal, tax or financial advice. Despite the care taken in compiling the content, we cannot guarantee its completeness, accuracy or currency. For personal advice, we recommend consulting a certified advisor, accountant or legal expert. Use of our tools is always at your own risk.