[email protected]
DEEN

Invoice Ninja: Managed Hosting, Installation and Operations

WZ-IT plans, installs and operates InvoiceNinja as managed hosting, in your cloud or on premises. Depending on the target design, we also provide migration, secure network and identity integration, monitoring, backups, updates, integrations and further development.

Schedule a CallHosting & pricing
Reviews
Cloud Wolke HerausforderungServer NachhaltigkeitIT Beratung Service Consulting SoforthilfeTimo Wevelsiep Robin ZinsExperten für Innovation Migration AWSHetzner Hosting zuverlässig

Companies worldwide trust WZ-IT

  • Stadtwerke Brühl
  • DGHO e.V.
  • solarwerkstatt berlin
  • Krüger Dirndl
  • ABCO Water Systems
  • Golem.de
  • EVADXB
  • nextGYM
  • AInergy
  • ml&s
  • Odiseo Solutions
  • Annota
  • ARGE
  • SweetConnect GmbH
  • Aphy AG
  • CORGOS
  • Rekorder
  • SolidProof
  • Yonju
  • Keymate
  • Paritel
  • Mr. Clipart
  • Millenium
  • Negosh
  • Führerscheinmacher
  • BTI
  • Deutsche Gesellschaft für Datenschutz
Read client reviews

About the technology

What is InvoiceNinja?

Invoice Ninja is self-hostable, source-available software under the Elastic License 2.0 for invoicing, online payments, expense tracking and project management. Required capabilities, localisation and vendor licences are checked before production use.

As an independent service provider, we support you in installing, configuring, and customizing this versatile business solution to your individual requirements. Leverage the benefits of automated invoicing and professional client communication for your business.

GitHubWebsiteOfficial Documentation

InvoiceNinja Features

  • Professional Invoicing

    Create and send invoices with PDF preview, customisable templates, recurring invoices and configurable reminders.

  • Flexible Payment Options

    Integration with numerous payment gateways like Stripe, PayPal, Braintree, Square, Mollie, and more for fast online payments and automatic status updates.

  • Quotes & Estimates

    Create professional quotes that can be automatically converted to invoices upon approval, enabling a seamless sales process.

  • Project & Time Tracking

    Manage projects with Kanban boards, track tasks and working hours, and convert them into invoice items with a single click.

  • Expense Management

    Track expenses, import receipts, categorize costs, and bill them to clients if needed, with optional bank account integration.

  • Client Portal

    Provide your clients access to a personalized portal where they can view invoices, make payments, and download documents.

  • Reports & Analytics

    Gain detailed insights into your finances with revenue reports, client statements, aging cohorts, and customizable reporting options.

  • Extensive Customizations

    Customize invoice designs, email templates, numbering sequences, and user permissions to match your specific business requirements.

  • Versatile Integrations

    Connect InvoiceNinja with Zapier, Make, Pabbly, and other services for automated workflows and seamless integration into your existing tool landscape.

Licence

Licensing Notice

Invoice Ninja is licensed under the Elastic License 2.0. It prohibits providing the software to third parties as a hosted or managed service that gives them access to a substantial set of its features (https://github.com/invoiceninja/invoiceninja/blob/v5-stable/LICENSE). WZ-IT therefore operates Invoice Ninja only as your own instance on your infrastructure and on your behalf. White-label setups (removing Invoice Ninja branding) require a separate licence from Invoice Ninja LLC. We take over installation, configuration, updates, monitoring, backups and support on your infrastructure. On request, we support you in obtaining any required vendor licence.

Infrastructure, integration and operations

InvoiceNinja as part of your infrastructure

We do more than provide an application. WZ-IT designs the technical architecture, integrates network and identity, operates the agreed scope and develops integrations when the standard product is not enough.

Architecture and migration

Sizing, target environment, data transfer, cutover and recovery are resolved before production operations.

  • On-Premise

    In your data center: Installation on bare-metal, VM or Docker · Integration with existing Active Directory/LDAP

  • Installation in your cloud

    In your own cloud account, for example with AWS, Azure, GCP or Hetzner · Terraform/IaC setup (optional) · Kubernetes or Docker Compose · Capacity and scaling design

  • Enterprise Setup

    Advanced architecture after technical and licence assessment: HA and recovery design where supported by the application and edition · Logging according to feature set and edition · Custom security policies

Network and identity

SSO, secure access, internal systems and existing security components are integrated appropriately.

  • VPN Access

    WireGuard, NetBird, Tailscale, Headscale, OpenVPN, Cloudflare Tunnel · Easy client setup for all devices

  • SSO Integration

    Directly or through an upstream identity layer

  • Multi-Factor Auth

    Depends on application, edition and identity provider

  • Firewall & Hardening

    Fail2Ban, Rate Limiting, IP Whitelisting

Monitoring and service level

Updates, backups, technical monitoring and response paths follow a transparent operational scope.

  • 24/7 proactive monitoring

  • Updates and patches

    Regular updates, CVE monitoring and prioritised patches for critical vulnerabilities

  • Backup and retention according to the agreed architecture

  • Personal technical contact

Integration and development

APIs, automation and custom extensions can be delivered beyond basic deployment.

  • REST API Automation

    We integrate invoicing completely invisibly into your app. Your system fires an API call, InvoiceNinja creates, sends, and reminds the invoice fully automatically.

  • Payment Webhooks

    Invoice paid? We use webhooks to unlock the service in your system, trigger shipping, or send a 'Thank You' SMS to the customer.

  • Custom PDF Design (PhantomJS/Snappy)

    The standard editor has limits. We code PDF templates directly in HTML/CSS/Blade. Pixel-perfect implementation of your stationery, conditional texts (EU Reverse Charge), and dynamic QR codes.

Full-service installation with no hidden costs

What the InvoiceNinja setup includes

  • Complete installation & configuration
  • SSL certificate & reverse proxy setup
  • Backup strategy & disaster recovery
  • Performance optimization & tuning
  • Security hardening following OWASP
  • Monitoring & logging setup
  • Documentation & best practices
  • Administrator training (remote)
  • 30 days email support included
  • Dedicated contact person
  • Optional integration: LDAP/AD, SSO, MFA
  • Update strategy & patch management setup

The exact scope depends on the application, edition, infrastructure and criticality. Vendor licences and non-standard components are quoted separately.

Concrete Use Cases

InvoiceNinja Development & Integration

InvoiceNinja is powerful, but German requirements (ZUGFeRD, special layouts) are often tricky. We use the Laravel foundation for customizations beyond the UI.

DATEV / Accounting Export

Problem

The tax advisor needs data in a specific CSV/XML format that InvoiceNinja does not natively export.

Solution

An external script that pulls all new invoices monthly via API, maps account assignment information, and generates a DATEV-compliant export file.

Complex Subscription Models

Problem

Billing is based on usage, not fixed prices. Standard recurring invoices cannot handle this.

Solution

A cronjob service that aggregates usage data from your app at month-end and generates an invoice with dynamic line items in InvoiceNinja via API.

Embedded Customer Portal

Problem

Customers should not be redirected to an external URL (invoice.domain.com) for invoices and payments.

Solution

Integration of the client portal via IFrame or API into your own login area. Seamless UX without media breaks.

Full operations on your infrastructure

InvoiceNinja - fully operated on your infrastructure

InvoiceNinja remains on your infrastructure. We define the operating scope, backup architecture and service level based on the existing system and its criticality.

Assessment and installationfrom €1,490 excl. VAT one-timeOngoing operations follow at the agreed service level.

Operations on your infrastructure

  • Installation, configuration and ongoing operations
  • Regular updates, CVE monitoring and prioritised patches for critical vulnerabilities
  • Central logs with immutable retention
  • 24/7 proactive monitoring
  • Backup and retention according to the agreed architecture
  • Five service levels, 24/7 P1 response with Production or Critical
  • Infrastructure and data remain under your control
  • Personal technical contact
Schedule a Call

Straightforward provisioning within a few business days

Payment
  • SEPA direct debit
  • Visa
  • Mastercard
  • American Express
  • Apple Pay
  • Google Pay
  • PayPal
  • Bank transfer

All prices are net and exclude statutory VAT. The offers are addressed to businesses. All on-premises options

Other options

On-premises option

Run InvoiceNinja on hardware at your organisation

As an alternative to managed hosting in the data centre, WZ-IT provides the hardware, configures InvoiceNinja, and handles hardening, monitoring, updates, backup and technical support. Access can be limited to the internal network or enabled through VPN and existing identities.

from €349 excl. VAT / month · plus one-time provisioning and initial setupView WZ-IT App Node →

Target architecture

Integrate InvoiceNinja into your infrastructure with clear controls

A business application becomes a resilient part of the process landscape only when data flows, roles, communication paths and interfaces are clearly defined.

Teams and business processes

Employees, customers, partners and automated processes use defined roles and entry points.

Secure access

TLS, firewall rules, reverse proxies or private network paths are designed around the platform's exposure.

Identity and permissions

Local accounts, SSO, directories, service accounts and emergency access are connected through clear roles.

InvoiceNinja platform

Business features, workflows, roles and configuration are deployed reproducibly and kept up to date.

Database and files

Business data, attachments, retention, export and consistent backups.

Communication services

Email, documents, notifications and optional background services.

APIs and business systems

Controlled connections to CRM, ERP, directories, payment or third-party systems.

The diagram is a resilient target model. Its implementation depends on edition, data flows, load, availability objectives and existing infrastructure.

Role in the overall system

Related services for InvoiceNinja

This page covers installation and the agreed platform operations for InvoiceNinja. Custom code, the access layer and special confidentiality requirements remain clearly separated responsibilities that can be added when needed.

Maintain the application

Support custom code and integrations

Keep custom extensions, interfaces and dependencies controlled, updated and supportable.

View service Secure access

Connect users, sites and systems

Add identity-based access and private network paths as a separate operational layer.

View service Operate confidentially

Assess Section 203 requirements separately

For professional secrecy holders, define contractual, access and infrastructure requirements in a dedicated operating model.

View service

Three relevant adjacent paths instead of a long list of further products.

View the overall system

Knowledge

More about InvoiceNinja

Tutorials & guides

Matching solutions for your project

Reviews & projects

Client feedback and projects worldwide

5.0 out of 5 · 15 client reviews

Networking & Provisioning

WZ-IT moved our studio infrastructure from decentralised individual devices to a central platform: every site is securely connected via VPN, new devices are onboarded automatically and an entire site is provisioned from a template, without manual steps on location. What impressed me most is the breadth and depth of their knowledge: Timo and Robin are not a typical IT provider who sets up a server and leaves. The two of them think their way into highly complex infrastructure and software topics, work through every requirement we put in front of them, and build networking, provisioning and operations so that everything fits together in the end. WZ-IT is an excellent partner for complex software, network and architecture projects.
Steve KirchnerManaging Director, nextGYM GmbH
View project

International

Built in Germany's Ruhr Valley. Running worldwide.

WZ-IT designs, develops and operates infrastructure and software for clients in Germany and internationally. We deliver projects remotely and continue supporting them in ongoing operations after go-live.

Selected projects

Read client reviews

  • stadtwerke-bruehl.deSecure your Proxmox & backup setup
  • richtung-sonne.deSee knowledge transfer
  • krueger-dirndl.deSee the AI platform
  • dgho.deModernize your infrastructure - sovereign
  • golem.dePlan a sovereign open-source stack
  • mlands.comIntegrate a local AI solution
  • arge.deModernize your legacy software
  • evadxb.comCut cloud cost - up to −81%
  • aphy.comBuild a high-availability Proxmox cluster
  • ainergy.deVirtualize with Managed Proxmox
  • annota.deDesign an open-source AI architecture
  • yonju.deGet collaboration fully managed
  • odiseo.netShip your prototype to production
  • sweetconnect.deConnect sites and clusters securely

Full operations on your infrastructure

Enquire about operating InvoiceNinja on your infrastructure

Briefly describe the current state and objective for InvoiceNinja. We assess infrastructure, integration, and ongoing operations.

  • Straight with Timo and Robin - no sales team, no pitch
  • A professional assessment of your situation
  • Concrete next steps for infrastructure, software or AI

The conversation is free and non-binding.

WZ-IT's advice on our Azure migration was technically sound and completely non-binding right from the intro call - we took away a great deal.
Jakob ÖschlbergerInno7 GmbH
Email[email protected]Phone+49 2922 875068
Timo and Robin, founders of WZ-IT

Which InvoiceNinja service do you need?

Choose the appropriate starting point or simply describe the situation.

We usually respond within one business day. Please do not submit credentials.

WZ-IT's advice on our Azure migration was technically sound and completely non-binding right from the intro call - we took away a great deal.
Jakob ÖschlbergerInno7 GmbH