TwinnTax

Name

TwinnTax

Legal name

TwinnTax SRL

Website

https://twinntax.com

Company type

Private

Founded year

2019

Operating status

Operating

Headcount range

1–10 employees

Ownership category

akta.pro rank

Product category

Accounting Practice Management Software

NAICS

Accounting, Tax Preparation, Bookkeeping, and Payroll Services (5412)

SIC

Services-Prepackaged Software (7372)

akta.pro industry

PRIMARYFSAGADAJ

Tax Planning & Personal Tax Optimization Tools

Financial & Insurance/Financial Technology (Fintech)/Personal Finance & Financial Wellness (PFM)

Keywords

• Tax automation software
• Accounting practice management
• Belgian tax compliance
• IPP declaration filing
• Fiduciary workflow SaaS

Headquarters

HQ city

Suarlée

HQ country

Belgium

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

Personnel, Technology or R&D, Infrastructure, Marketing or Sales

Revenue model

1. TwinnTax Workflows Subscription: Base subscription priced per active client portfolio: Citizens (13 cents/citizen, in lots of 100) and Companies (25 cents/company, in lots of 50). Minimum €85/month includes 100 citizens + 50 companies + 10 salaries/declarations. Billing is monthly based on end-of-month consumption. This is the core subscription revenue stream.
2. Director Salary & Author Rights Management: Pay-per-director/manager salary slip module. Volume-based pricing: 20-49 at €3.00/month each, 50-99 at €2.50, 100-199 at €2.00, 200-499 at €1.75, 500+ at €1.50. Minimum 20 salary slips included in base. Additional revenue stream tied to the number of managed director salary records.
3. Electronic Signatures: €1 per confirmed electronic signature transaction (for UBO register modifications and other documents like AG minutes, IPP preparation approvals). Each initiated procedure (not just completed) is billed. Covers UBO register modifications with the national UBO portal.
4. Peppol Portals: Peppol Pro portals for VAT-registered independents at €4.50/month per portal (10 included in base). Peppol BTW portals at €7.50/month per portal. Peppol Light included in base for VAT-exempt/freelance clients. Revenue from expanding portal adoption.
5. External Software Integrations: FTP synchronization (€50/month) and Open API connection (€50/month) for linking TwinnTax with external accounting software. Pre-built paid integrations with FID-Manager and WinPrest are also available.
6. Intervat VAT Filing Robot: Automated VAT declaration filing through the official FOD Financiën API (Intervat), one-by-one, with automatic customer payment email generation including calculated VAT balance. Revenue recognized as part of the workflows subscription.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels6 records

Core offering

TwinnTax is a 100% Belgian cloud-based SaaS platform that helps accounting firms (fiduciaires) automate repetitive tax and administrative tasks. Its core offering includes automated document collection from Belgian government portals, bulk personal income tax (IPP) filing via Tax-On-Web, director salary management with fiscal form generation, UBO register automation, 281.xx and 273 declaration filing, general meeting management, and Peppol e-invoicing portals. The platform is sold as a base TwinnTax Workflows subscription priced per active client portfolio with volume-based and transaction-based add-ons.

Product overview

TwinnTax is a 100% Belgian cloud-based accounting practice management application designed to help accountants automate their recurring tasks and diversify revenue streams. The product operates as a unified platform with multiple integrated modules: the core TwinnTax On-Web module for personal income tax (IPP/PB) preparation and bulk filing via Tax-On-Web; the Document Collection Bot that automatically pulls and classifies documents from Belgian government platforms (MyMinFin, Tax-On-Web, BelcoTax, FinProf, NBB, Moniteur); the Salary Module for director compensation management with automated payslips, withholding tax, and fiscal forms; the UBO & Shareholders Register module for UBO compliance and share registry management; the Fiscal Forms 281.xx module for generating and auto-filing all Belgian fiscal forms; the Declarations 273 module for dividend and copyright withholding tax; the AG & Publications module for general meeting workflow management; and the Peppol Portal for e-invoicing. Pricing is structured as a base TwinnTax Workflows package (scaled by fiduciaire size) plus add-ons for salary/author rights management and external software integrations (FTP sync, open API). A TwinnTax AI capability was introduced in 2025 for AI-assisted tax assistance.

Differentiator

Problem solved

Functional benefit

Products and services

• TwinnTax On-Web Core tax filing module that automates the preparation and bulk submission of personal income tax (IPP/PB) declarations via Tax-On-Web. Features real-time tax calculation, year-over-year comparison, bulk submission of up to 500 declarations, and automatic download of tax assessments (AER). Built for Belgian accounting firms managing large client portfolios.
• Document Collection (Bot) Automated document retrieval module that connects to Belgian government platforms (MyMinFin, Tax-On-Web, BelcoTax, FinProf, NBB, Moniteur, E-BOX, Brussels MyTax) to download and classify client documents daily without user intervention. Designed for Belgian fiduciaires handling large client portfolios.
• Peppol Portal E-invoicing portal integrated with the Peppol network, available in Light (for VAT-exempt freelancers) and Pro (for VAT-registered businesses) variants. Enables sending/receiving invoices via Peppol, creating quotes, managing fixed assets, and automatic revenue code (1600) encoding in the IPP module. Includes OCR for scanned/PDF invoices. White-labeled to the fiduciaire's branding for end-client use.
• Salary Module (Loonmodule) Director salary management module that automates monthly payslip generation, withholding tax (bedrijfsvoorheffing/precompte professionnel) calculation and filing, and fiscal form 281.20 creation. Includes salary simulations with PB impact analysis, free SODA synchronization, ATN (benefits in kind) management, and a free smartphone app for clients.
• UBO & Shareholders Register Automates UBO (Ultimate Beneficial Owner) register management and shareholder register creation. Detects clients with active UBO mandates, extracts beneficiary data, sends annual UBO confirmations in bulk, and generates PDF shareholder books with the fiduciaire's branding. Electronic signatures serve as UBO proof documents.
• Fiscal Forms 281.xx (Fiches 281) Automated generation and filing of Belgian fiscal forms (281 series) covering wages, director compensation, negative forms, collaborative economy income, attendance fees, copyright income, commissions, gifts, and tax shelter. Covers forms 281.10 through 281.99. Auto-filed on BelcoTax and sent to clients.
• Declarations 273 (Dividendes / Droits d'Auteur) Generates and automatically files Belgian 273 declarations covering Belgian dividends (273A_Div), copyright income (273S), movable income withholding (273), and employee participation (273A_Part). Automatically calculates flat-rate expenses and withholding tax, files the declaration, and sends detailed client notifications with QR payment codes.
• AG & Publications (General Meeting Management) Streamlines the complete annual general meeting (AGM) workflow including convocation dispatch, real-time voting, minute (PV) and attendance list creation in PDF, electronic or manual signatures, and Belgisch Staatsblad/Moniteur publication bundle generation. Links to the salary module (tantièmes) and the 273 module (dividends, liquidation reserves).
• TwinnTax AI AI-powered feature introduced in 2025 for assisting with explaining foreign bank account information to the Belgian anti-money laundering authority (CAP). Part of the personal income tax workflow within TwinnTax.
• TwinnTax Intervat Robot VAT declaration submission robot that files Belgian VAT returns one-by-one to Intervat via the official FOD Financiën API. Generates a separate PDF per submission and can automatically send payment request emails to clients with payable amounts and latent VAT balances.

Named customers8 records

Segments2 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration18 records

AI capability2 records

Feature9 records

Partnerships

Five partnerships are on record, tiered core and minor.

• BothivecoreTechnology or IntegrationBothive provides a personal income tax questionnaire that integrates with TwinnTax. TwinnTax automatically syncs relevant documents (identification, income, dependents, alimony, real estate, foreign income, etc.) into Bothive's questionnaire to streamline the IPP declaration process for accountants' clients.
• FID-ManagercoreTechnology or IntegrationPre-built, discounted integration between TwinnTax and FID-Manager accounting software. Includes Tax Bot optimization and withholding optimization features. Requires no additional installation from the user.
• WinPrestcoreTechnology or IntegrationPre-built, discounted integration between TwinnTax and WinPrest accounting software. SODA files are automatically processed. Requires no additional installation from the user.
• Startit KBCminorGTM or Marketing PartnerStartit KBC is a startup support program by Belgian bank KBC. TwinnTax is listed as a proud member, indicating a marketing/partnership relationship for startup and entrepreneurship support ecosystem visibility.
• Belgian Accounting Software & Service Partners (UCM, Partena, Pluxee, Monizze, Crelan, TAT, CBX, Fid-Manager)minorChannel Partner/ Reseller/ DistributorTwinnTax collaborates with various Belgian service providers and software vendors whose logos are displayed in the 'Nos Partenaires' section, including HR services (Pluxee, Monizze, Crelan), accounting software (CBX, Fid-Manager, TAT), and professional services (UCM, Partena). These partnerships are primarily for co-marketing and service ecosystem enrichment.

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• FID-Manager: Belgian accounting practice software that TwinnTax has a pre-built integration with; FID-Manager serves the same fiduciaire customer base with accounting workflow tools, positioning it as both partner and competitor.
• WinPrest: Belgian accounting software for fiduciaires with a documented TwinnTax integration; competes for the same accounting-firm customer base while complementing TwinnTax's tax-automation layer.
• IBGRAF (ADMIN-IS / ADMIN-CONSULT): Belgian accounting practice management suite used by fiduciaires; TwinnTax has a paid integration with IBGRAF, making it a peer-and-partner across the same Belgian accountant workflows.
• Winauditor: Belgian accounting/audit software serving fiduciaires with SODA file workflows that TwinnTax integrates with; competes for the same accounting firm IT budgets.
• Admin-Pulse: Belgian accounting workflow platform with documented TwinnTax integration; targets the same fiduciaire base and overlaps in document automation capabilities.

Emerging players

• Bothive: Belgian personal-income-tax questionnaire tool integrated with TwinnTax; addresses the same IPP pain point but via a lighter client-facing questionnaire, making it a partial-overlap emerging peer.

Broad incumbents

• Silverfin: Cloud accounting practice management platform for accountants across multiple geographies; comparable in serving accounting firms with workflow automation, though operating at a broader, multi-country level.
• Karbon: Workflow and practice management SaaS for accounting firms; competes for the same vertical buyer (accounting practices) with broader workflow tools but without the Belgian-tax-specific deep integrations.
• Sage (Belgium / European accounting suite): Global incumbent in SMB/accounting software with Belgian offerings; broader portfolio but overlapping customer base among Belgian fiduciaires and SMEs.
• Wolters Kluwer Tax & Accounting (Belgium): Large incumbent providing tax-compliance and accounting software across Europe, including Belgium; competes for the same fiduciary customers with a much broader compliance and content portfolio.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/TwinnTax
• LinkedInbe.linkedin.com/company/twinntax

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about TwinnTax