TwinnTax
- Company typePrivate
- Founded2019
- HeadquartersSuarlée, Belgium
- Headcount1–10
- GTM typeB2B
- OfferingSoftware
TwinnTax firmographics
Firmographics- 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
TwinnTax industry classification
Industry- Product category
- Accounting Practice Management Software
- NAICS
- Accounting, Tax Preparation, Bookkeeping, and Payroll Services (5412)
- SIC
- Services-Prepackaged Software (7372)
- akta.pro primary industry
- Tax Planning & Personal Tax Optimization Tools (FSAGADAJ)
Keywords
Where TwinnTax is headquartered
LocationHeadquarters
- HQ city
- Suarlée
- HQ country
- Belgium
- HQ region
- Europe
Offices1 record
Markets served
TwinnTax business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Personnel, Technology or R&D, Infrastructure, Marketing or Sales
Revenue model
- 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.
- 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.
- 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.
- 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.
- 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.
- 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
| Model | Billing | Price |
|---|---|---|
| Subscription | Monthly | Minimum base package (TwinnTax Workflows) |
| Usage-based | Monthly | Director Salary Volume Pricing |
| Subscription | Monthly | Peppol Portals |
| Transaction based/ take rate | Pay-as-you-go | Electronic Signatures |
| Subscription | Monthly | External Integrations |
| Freemium | Annual | ITAA Intern Free Tier |
Go-to-market motion2 records
Distribution channels3 records
Marketing channels6 records
TwinnTax product offering
Product offeringCore 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.
Companies that use TwinnTax
Customer profileNamed customers8 records
Segments2 records
Ideal customer profiles2 records
TwinnTax technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- Yes
- API docs
- API detail
Core technology
AI maturity
App detail
Integration18 records
AI capability2 records
Feature9 records
TwinnTax partnerships and signals
Strategic signalPartnerships
Five partnerships are on record, tiered core and minor.
- BothivecoreBothive 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-ManagercorePre-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.
- WinPrestcorePre-built, discounted integration between TwinnTax and WinPrest accounting software. SODA files are automatically processed. Requires no additional installation from the user.
- Startit KBCminorStartit 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)minorTwinnTax 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
TwinnTax competitors and assessment
Company assessmentDirect 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
TwinnTax social profiles
Digital presenceTwinnTax compliance and trust
Trust signalCompliance1 record
TwinnTax financial estimates
Financial estimateRevenue estimate
Valuation estimate
TwinnTax leadership team
Management profileNumber of profiles
Profiles1 record
TwinnTax funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
TwinnTax M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about TwinnTax
What does TwinnTax do?
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.
Is TwinnTax a public or private company?
TwinnTax is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was TwinnTax founded?
TwinnTax was founded in 2019. It employs 1 to 10 people.
Where is TwinnTax based?
TwinnTax is headquartered in Suarlée, Belgium, in the Europe region.
How does TwinnTax make money?
Six revenue lines are on record. TwinnTax Workflows Subscription is the primary driver. The others are director Salary & Author Rights Management, electronic Signatures, peppol Portals, external Software Integrations and intervat VAT Filing Robot.
Who are TwinnTax's main competitors?
Direct peers on record are FID-Manager, WinPrest, IBGRAF (ADMIN-IS / ADMIN-CONSULT), Winauditor and Admin-Pulse. Bothive is listed as an emerging player. Broad incumbents are Silverfin, Karbon, Sage (Belgium / European accounting suite) and Wolters Kluwer Tax & Accounting (Belgium).
Does TwinnTax have an API?
Yes. TwinnTax offers an open API (50€HT/month) that allows linking TwinnTax documents with external software. Developers can create an API key and connect TwinnTax to their own accounting software. The API covers all documents produced by TwinnTax and enables synchronization with other software, such as task managers. Technical documentation is available upon request.
What industry is TwinnTax in?
TwinnTax's product category is Accounting Practice Management Software. Its primary akta.pro industry code is FSAGADAJ, Tax Planning & Personal Tax Optimization Tools. Its NAICS code is 5412 and its SIC code is 7372.