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Mandatory in Belgium starting on January 1st, 2026

Create invoices with a few clicks, once you are done, they are sent securely via the Peppol network using your customer’s unique Peppol ID. Easy, convenient and compliant.

Custom development possible

White label system that adapts to your business

Pay only for the space you need, not per user

Manage leads, contracts, expenses and reports

Customer relationships management (CRM)

More than an e-invoicing system.
Our CRM gives you the tools you need, for the same price, regardless of the number of users.

Clients

Manage your clients, contacts, and relationships effectively

Store

Manage your store, products, and sales seamlessly

Orders

Manage your orders, sales, and customer transactions

Invoices

Create and manage invoices, and e-invoices for your clients and projects

Payments

Process payments, manage transactions, and handle financial operations efficiently

Contracts

Manage your contracts, agreements, and legal documents with ease

Prospects

Manage your prospects, estimates, requests, forms, and proposals effectively

Leads

Capture and manage leads, opportunities, and sales pipelines

Subscriptions

Manage your subscriptions, recurring payments, and billing cycles

How it works

Get started with e-invoicing in minutes, choose the plan that adapts to your needs and start using Nizu today!

Sign up and create your account

Choose the plan that best fits your needs and start using Nizu right away, and if you have questions, just send us a message, we are here to help you get started!

Customise your account

Add your brand colors, logo and your company information to make your invoices look professional and unique.

Create your first invoice

Create your first invoice with a few clicks, once you are done, it is sent securely via the Peppol network using your customer’s unique Peppol ID. Easy, convenient and compliant.

Manage estimates and proposals

Not always an invoice is needed first, create estimates and proposals with ease, if the client approves them, you can convert it to an invoice in just a click.

Testimonials and reviews

Trusted by companies and their accountants!

Nizu has been tested by many companies and accountants during years, and it has been a great success for them to manage everything under one system!

+100

Tools included for the same price

Lisandro Yelin, owner of Accountant firm in Brussels

Lisandro Yelin

Managing director Accounting firm Fidelium

10/10 would recommend. Even when e-invoicing was not available, they had already a system that works great for all the companies we work with

Dr Pieter-Boghossian Institut Fovea

Pieter-Boghossian

Institut Fovea

The system helped us to manage Institut Fovea in Brussels for more than +8 years without any issue.
We even asked them to develop custom features for us and they did it in a very professional way.

Start today

Choose a plan and start using your workspace, all apps included!

Nizu is a workspace that works with and for you, we don't punish you with extra licenses everytime your team grows. Manage your business and grow with confidence.