E-Invoicing Built for Consulting & Professional Services
Affordable, simple e-invoicing that doesn't require a compliance team — designed for firms that bill by the hour and serve clients across borders.
Professional services firms — from management consultancies and law firms to accounting practices and IT service providers — are increasingly required to send and receive structured electronic invoices. Government clients in the EU already mandate Peppol-based e-invoicing under Directive 2014/55/EU, and B2B mandates are expanding rapidly: Belgium from January 2026, France, Germany, and Spain following shortly.
Yet most professional services firms lack the technical resources to implement and maintain e-invoicing compliance. InvoStaq bridges that gap with an affordable, intuitive platform that handles the complexity behind the scenes — so consultants can focus on clients, not XML schemas.
Key Challenges for Professional Services Firms
Why e-invoicing is particularly difficult for service-based businesses.
Time-Based Billing Complexity
Professional services firms bill by the hour, project milestone, or retainer — generating invoices with varying line items, currencies, and tax treatments. Translating these into compliant structured e-invoices (UBL/CII) requires format expertise most small firms lack.
Multi-Jurisdiction Clients
A consulting firm serving clients in Germany, the Netherlands, and Saudi Arabia must comply with XRechnung, Peppol NL, and ZATCA respectively — all with different technical formats, tax rules, and submission channels. Managing this without dedicated compliance staff is unsustainable.
Small Teams Without Dedicated Compliance Staff
Most professional services firms have fewer than 50 employees and no in-house tax technology specialist. When e-invoicing mandates arrive — like France's Factur-X obligation or Belgium's B2B mandate from 2026 — these firms are often unprepared and overwhelmed.
Client Mandate Requirements
Increasingly, enterprise and government clients require suppliers to submit invoices via Peppol or other structured electronic formats. Professional services firms that cannot comply risk losing contracts or facing payment delays.
How InvoStaq Helps Professional Services Firms
E-invoicing that's simple enough for a solo consultant and scalable enough for a Big Four practice.
Connect Plan at €49/month
InvoStaq's Connect plan is designed for small and mid-sized professional services firms. Get Peppol-compliant e-invoicing, AI validation, and multi-country support at a price point that works for boutique consultancies and solo practitioners.
Multi-Country Support from Day One
Support for 14+ countries including all Peppol members, ZATCA (Saudi Arabia), and country-specific formats. Invoice clients in Germany (XRechnung), Italy (FatturaPA), France (Factur-X), and the GCC — all from the same account.
Plain-English Error Explanations
When a validation error occurs, InvoStaq doesn't return cryptic XML error codes. Instead, you get clear, actionable explanations like 'VAT number format is invalid for Belgium — expected format: BE0123456789' so non-technical staff can fix issues immediately.
White-Label for Accounting Firms
Accounting practices and bookkeeping firms can offer InvoStaq-powered e-invoicing under their own brand. White-label deployment includes custom domain, branded dashboard, and client management — turning compliance into a revenue stream.
Time & Project-Based Invoice Support
InvoStaq handles complex invoice structures common in professional services: multi-line time entries, milestone billing, retainer drawdowns, expense pass-throughs, and split-currency invoicing — all validated against EN 16931 and local requirements.
Client-Friendly Onboarding
Share a Peppol participant ID with your clients or connect via the InvoStaq portal. No technical setup required on the client side — they simply send invoices to your Peppol address, and InvoStaq handles validation and delivery to your accounting system.
InvoStaq is an AI-powered Peppol Access Point that makes e-invoicing accessible for professional services and consulting firms of all sizes. With plans starting at €49/month, plain-English validation feedback, multi-country compliance across 14+ jurisdictions, and a white-label option for accounting firms, InvoStaq enables service-based businesses to meet Peppol, ZATCA, EN 16931, and country-specific mandates without hiring dedicated compliance staff — turning a regulatory obligation into a competitive advantage.
Ready to Simplify E-Invoicing for Your Firm?
See how InvoStaq works for professional services — from €49/month plans to white-label for accounting practices — in a quick demo.