Liantis: payroll provider facts

Who it is

The payroll provider is Liantis sociaal secretariaat vzw (enterprise number 0406.558.771), Sint-Clarastraat 48 in Bruges. It belongs to the Liantis services group, which also runs a business one-stop shop, a social insurance fund and an external prevention and protection service.

The payroll provider goes back to ADMB Sociaal Bureau, founded in 1942, which has been called Liantis since 10 September 2018.

Sources: Liantis, privacypolicy klanten (juridische entiteiten, bijlage 1) (checked on 11 November 2026); Liantis, algemene voorwaarden oktober 2026 (PDF) (checked on 11 November 2026); Liantis, ADMB Sociaal Bureau wordt Liantis sociaal secretariaat (checked on 11 November 2026)

Approval

Liantis is on the list of approved payroll providers for employers published in the Belgian Official Gazette on 15 July 2025 (situation on 20 June 2025), under number 510, as LIANTIS ESS, V.Z.W..

Under the royal decree of 28 November 1969 an approved payroll provider is a non-profit that must state its approval number on every document it issues. Your payslip from Liantis should therefore carry number 510.

Sources: FOD Sociale Zekerheid, lijst van de erkende sociale secretariaten van werkgevers op 20 juni 2025 (Belgisch Staatsblad 15 juli 2025) (checked on 11 November 2026); Koninklijk besluit van 28 november 1969, art. 44 tot 49 over de erkende sociale secretariaten van werkgevers (Justel) (checked on 11 November 2026)

Offices, clients and target group

Liantis mentions 60 offices on its about page; on 11 November 2026 its office finder showed 42 for all services together.

By its own account Liantis ran 5.1 million payroll calculations in 2023 for more than 394,493 employees. Its press page mentions 76,500 employers and more than 235,000 self-employed.

Liantis names starters, the self-employed, SMEs, larger companies and organisations and their advisers. According to its service page, the payroll service focuses on SMEs and the social profit sector.

Sources: Liantis, over Liantis (kantoren) (checked on 11 November 2026); Liantis, kantorenzoeker (checked on 11 November 2026); Liantis, sociaal secretariaat: cijfers 2023 en prijsopbouw (checked on 11 November 2026); Liantis, perspagina (werkgevers en zelfstandigen) (checked on 11 November 2026); Liantis, roots, missie en visie (doelgroep) (checked on 11 November 2026)

Services in the same group

The group includes a business one-stop shop, a social insurance fund for the self-employed and an approved external service for prevention and protection at work. We found no in-house child benefit fund.

Sources: Liantis, ondernemingsloket (starters in 2023) (checked on 11 November 2026); Liantis, sociaal verzekeringsfonds (checked on 11 November 2026); Liantis, preventie en welzijn: erkende externe dienst voor preventie en bescherming (checked on 11 November 2026)

Public pay and indexation information

Liantis publishes a monthly indexation forecast per sector as a PDF, last updated on 5 November 2026, and a gross to net calculator.

Sources: Liantis, welke indexatie mag je in jouw sector verwachten (update 5 november 2026) (checked on 11 November 2026); Liantis, bruto-netto-calculator (checked on 11 November 2026)

Price and termination

Liantis publishes no amounts. Its service page does describe the structure: an entry fee, a fixed monthly price and a fixed price per payroll calculation per employee, set out in a tailored proposal.

The general terms of October 2026 contain no article on term or termination; they refer to the basic membership agreement, which is not public.

Sources: Liantis, sociaal secretariaat: cijfers 2023 en prijsopbouw (checked on 11 November 2026); Liantis, algemene voorwaarden oktober 2026 (PDF) (checked on 11 November 2026)

Comparing with other payroll providers

On the comparison page Liantis sits next to seven other approved payroll providers, in alphabetical order and with the same data: approval number, offices, own client figures, target group and services in the group. There is no ranking and no rating.

Source: FOD Sociale Zekerheid, lijst van de erkende sociale secretariaten van werkgevers op 20 juni 2025 (Belgisch Staatsblad 15 juli 2025) (checked on 11 November 2026)