Fidiaz

Accounting & Business Advisory Servicesfidiaz.be

Fidiaz is a Belgian accounting and business advisory firm serving SMBs and entrepreneurs across startup, growth, optimization, and succession stages. Operating seven offices in Flemish-Brabant, Brussels, and Antwerp, it is a member office of PIA Group, Belgium's third largest accountancy and advisory group.

Company typePrivate
Founded-
HeadquartersKortenberg, Belgium
Headcount51–100
GTM typeB2B
OfferingServices

What Fidiaz does

Fidiaz is a Belgian accounting and business advisory firm headquartered in Kortenberg, operating seven physical offices across Flemish-Brabant, Brussels, and Antwerp. With 76 employees and over 50 years of operating history, the firm serves SMBs and entrepreneurs across the full business lifecycle, from startup and growth through optimization and succession/transfer. It is a member office of PIA Group, the third largest and fastest growing accountancy and advisory group in Belgium.

The firm's core services include bookkeeping and accounting (Boekhouden), digital transformation advisory, financial reporting (Rapportering), taxation (Fiscaliteit), corporate law (Ondernemingsrecht), corporate finance, and legal advisory. Underlying technology is limited to two named assets: the Silverfin cloud accounting platform used for financial workflows, and the My Fidiaz online client portal for client self-service. There is no proprietary technology stack, no API offering, and no disclosed AI capabilities. Services are delivered in Belgium's national languages by locally based specialist teams.

The revenue model is professional-services based, with quote-based engagements scoped to client needs; no public pricing is disclosed. The GTM motion is sales-led and relationship-driven, leveraging physical office proximity as the primary channel alongside a corporate website, newsletter, and recruitment-driven brand activity. Customer segments are diversified across startups, growing companies, optimization-focused firms, succession candidates, and international non-profit organizations (vzw's), with no named reference logos available. The firm is privately held and has no disclosed funding rounds or M&A activity.

Fidiaz firmographics

Firmographics

Name: Fidiaz
Legal name: Fidiaz
Website: https://fidiaz.be
Company type: Private
Operating status: Operating
Headcount range: 51–100 employees
Short description: Fidiaz is a Belgian accounting and business advisory firm serving SMBs and entrepreneurs across startup, growth, optimization, and succession stages. Operating seven offices in Flemish-Brabant, Brussels, and Antwerp, it is a member office of PIA Group, Belgium's third largest accountancy and advisory group.
Ownership category
akta.pro rank

Where Fidiaz is headquartered

Location

Headquarters

HQ city: Kortenberg
HQ country: Belgium
HQ region: Europe

Offices6 records

Markets served

Fidiaz business model

Business model

GTM type: B2B
Offering type: Services
Cost components: Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

Accounting and Bookkeeping Services: Comprehensive accounting and bookkeeping services ensuring compliance with complex, rapidly changing legislation. Services include correct accounting and systematic follow-up.
Advisory Services: Specialized advisory services including digital transformation, reporting, taxation, corporate law, legal advice, and corporate finance. Services are tailored to each enterprise phase from startup to succession.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Fidiaz product offering

Product offering

Core offering

Fidiaz is a Belgian business advisory and accounting firm that provides outsourced bookkeeping, tax, corporate law, corporate finance, digital transformation, and management reporting services to entrepreneurs, SMEs, and larger companies. Operating under PIA Group, the firm serves clients through seven offices across Flemish-Brabant, Brussels, and Antwerp, combining local presence with cloud-based tooling for compliance and advisory engagements.

Product overview

Fidiaz is a business advisory firm and accounting practice operating as part of PIA Group, the third largest and fastest-growing accounting and advisory group in Belgium. The firm offers a comprehensive suite of accounting and advisory services through multiple office locations in Flemish-Brabant, Brussels, and Antwerp. The core product portfolio includes: Boekhouden (accounting/bookkeeping), Digitale Transformatie (digital transformation), Rapportering (financial reporting), Fiscaliteit (taxation), Ondernemingsrecht (corporate law), Corporate Finance, and Legal services. Fidiaz also provides specialized advisory services for business lifecycle stages (Starting, Growing, Optimizing, Succession) and serves international non-profit organizations (vzw's) with complex European financial structures. Clients access services through the My Fidiaz online portal.

Differentiator

Problem solved

Functional benefit

Brands

My Fidiaz: Client portal for Fidiaz customers to access their accounts and services.

Products and services

Accounting and Bookkeeping Services

Companies that use Fidiaz

Customer profile

Segments5 records

Ideal customer profiles2 records

Fidiaz technology and API

Technology

Technology focussed No

API detail

Has API: No
API docs
API detail

Core technology

AI maturity

App detail

Fidiaz partnerships and signals

Strategic signal

Partnerships

One partnership is on record.

PIA GroupcoreStrategic or Co-development PartnerFidiaz is a member of PIA Group, which together with colleague offices forms the third largest and fastest growing accountancy and advisory group in Belgium. This partnership provides access to all advantages of a large organization while maintaining local advisor proximity.

Scale indicators3 records

Recent moves5 records

Expansion highlights4 records

Fidiaz competitors and assessment

Company assessment

Direct peers

Grant Thornton Belgium: Grant Thornton Belgium is the local member of the Grant Thornton international network, providing audit, tax, and advisory services to mid-sized companies — overlapping directly with Fidiaz's SMB and mid-market focus.
BDO Belgium: BDO Belgium is a mid-tier international accounting and advisory network operating across Belgium, offering audit, tax, accounting, and advisory services to SMEs and mid-market clients — directly comparable to Fidiaz's service portfolio and target segments.
Baker Tilly Belgium: Baker Tilly Belgium is the Belgian member of the Baker Tilly international network, providing accounting, audit, tax, and advisory services to mid-market clients — a close peer to Fidiaz in both offering and segment focus.
VGD Belgium: VGD is a Belgian accounting and advisory firm with offices across Flanders, Brussels, and Wallonia, providing accountancy, tax, and legal services to SMEs and entrepreneurs — a regional peer with similar client base and service lines to Fidiaz.
RSM Belgium: RSM Belgium is the Belgian member of the RSM global mid-tier accounting network, delivering accounting, tax, and advisory services to growth-oriented SMBs — a direct competitor to Fidiaz in the Belgian mid-market.
Moore Belgium: Moore Belgium is a leading Belgian mid-tier accounting and advisory firm and member of the Moore Global network, offering accounting, tax, and advisory services to SMEs — directly comparable in scale, geography, and service mix to Fidiaz.
Mazars Belgium: Mazars Belgium is the Belgian member of the Mazars international accounting and advisory network, serving SMEs and mid-market clients with audit, tax, accounting, and consulting — a direct competitor to Fidiaz in the Belgian mid-tier segment.
Vandelanotte: Vandelanotte is a Belgian regional accounting and advisory firm with multiple offices across Flanders, offering accounting, tax, and advisory services to entrepreneurs and SMEs — directly comparable to Fidiaz's regional, multi-office model.

Broad incumbents

KPMG Belgium: KPMG Belgium is a Big 4 firm operating across audit, tax, and advisory, with a substantial mid-market practice in Belgium — a larger incumbent that competes with Fidiaz for Belgian SME clients, especially on digital transformation and succession advisory.
Deloitte Belgium: Deloitte Belgium is a Big 4 firm providing audit, tax, legal, consulting, and financial advisory services across Belgium — a broad incumbent that increasingly targets the mid-market segment where Fidiaz competes.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights7 records

Customer concentration

Fidiaz financial estimates

Financial estimate

Revenue estimate

Valuation estimate

Fidiaz leadership team

Management profile

Number of profiles

Fidiaz funding detail

Funding detail

Funding overview

Funding rounds

Investors

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

Fidiaz M&A and investment

M&A and investment

M&A

Investments

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

Frequently asked questions about Fidiaz

What does Fidiaz do?

Is Fidiaz a public or private company?

Fidiaz is a private company. It is classified as corporate owned and is currently operating.

When was Fidiaz founded?

Fidiaz was founded in -1. It employs 51 to 100 people.

Where is Fidiaz based?

Fidiaz is headquartered in Kortenberg, Belgium, in the Europe region.

How does Fidiaz make money?

Two revenue lines are on record. Accounting and Bookkeeping Services are the primary driver. The others are advisory Services.

Who are Fidiaz's main competitors?

Direct peers on record are Grant Thornton Belgium, BDO Belgium, Baker Tilly Belgium, VGD Belgium, RSM Belgium, Moore Belgium, Mazars Belgium and Vandelanotte. Broad incumbents are KPMG Belgium and Deloitte Belgium.

Does Fidiaz have an API?

No public API is recorded for Fidiaz.