Ecovis KSO EOR Review: Germany Specialist

Ecovis KSO is a Düsseldorf-headquartered tax, legal, and audit firm that offers Employer of Record (EOR) services in Germany through its dedicated, AÜG-licensed entity ECOVIS EOR KSO GmbH. Unlike the global software-led EORs, Ecovis KSO operates as a partner-led professional services firm, with EOR sitting alongside tax advisory, legal advice, payroll, and management consulting. The firm is part of the broader ECOVIS network, which spans 100 places across Germany and 90+ countries worldwide, although the EOR offering itself is strictly Germany-only.

The service is led by Partner and Tax Advisor Stephan Kollenbroich, supported by a small EOR team including Global Mobility specialist Meike Ringel. Ecovis KSO explicitly positions itself as a non-mass-market EOR, focused on personalised support for foreign employers hiring a small number of German staff. For a wider view of the German market, see our Best EOR in Germany guide.

ECOVIS KSO Steuerberater + Rechtsanwälte GmbH & Co. KG is a long-established German Steuerberatung (tax advisory) and Rechtsanwaltskanzlei (law firm) hybrid, with offices in Düsseldorf, Cologne, Langenfeld, Oberhausen, Berlin, Wuppertal, Bad Oeynhausen, and Bielefeld. The EOR service is delivered through a separately incorporated, ring-fenced entity, ECOVIS EOR KSO GmbH, which holds the AÜG licence (Arbeitnehmerüberlassungsgesetz, the German Employee Leasing Act). Holding this licence is a legal precondition for operating compliantly as an EOR in Germany, and it is the same regulatory framework that constrains how many global EOR providers structure their German operations.

The service scope on the EOR side covers employee onboarding, drafting of German-law employment contracts, monthly payroll preparation, salary disbursement, registration with German authorities (Finanzamt, social security carriers, employers’ liability insurance), monthly wage tax and social contribution payments, benefits administration, and ongoing employee support. Outside the EOR mandate, the wider firm also handles labour law disputes, transfer pricing, international tax law, and broader payroll outsourcing — relevant context if the engagement evolves beyond a simple EOR setup.

Ecovis KSO publishes transparent fixed-fee pricing rather than a per-employee monthly flat fee in the style of global EOR platforms. All fees are quoted net of VAT, with 19% German VAT applied on top. The structure is split between recurring payroll fees and one-off setup costs, with additional consulting work billed at standard professional services hourly rates.

A point Ecovis KSO is unusually clear about, and that some global EOR providers gloss over, is the 18-month statutory cap on employee leasing under German law. The AÜG limits how long an EOR can lawfully second the same worker to the same client. After 18 months, the relationship must either end, convert into direct employment (which means the client setting up its own German presence), or be restructured. Ecovis explicitly flags this in initial discovery, alongside an alternative route: registering the foreign company in Germany for tax and social security purposes and running payroll directly, which is the appropriate path for permanent employment.

The alternative registration setup is priced separately: €800 for the employment contract drafting, €500 to €1,000 for the one-off setup of payroll and authority registrations, €110 flat per month for ongoing payroll (covering 1 to 4 employees), and €60 per electronic sick note retrieval. This is materially cheaper on a recurring basis than the EOR route, but only viable if the company is willing to take on German tax and social security registration. For the trade-off between EOR and own-entity setups, see our owned entity vs. in-country partner breakdown.

Ecovis KSO is a strong fit for foreign companies hiring a small number of German employees on fixed-term engagements where the legal and tax exposure justifies partner-grade local support. The combination of AÜG licence, in-house labour lawyers, in-house tax advisors, and an explicit refusal to operate as a mass-market platform makes it well-suited to complex senior hires, sensitive transitions, and situations where compliance documentation matters more than self-serve speed. Companies already familiar with how an EOR contract works in Germany, and which value direct access to a Partner, will get value from this engagement model.

Companies that want a single platform spanning multiple jurisdictions, native HRIS integrations, contractor management, equity administration, or a self-serve hiring flow will not find that here. The EOR is Germany-only, with no platform layer of consequence, and the firm does not offer multi-country consolidation despite Ecovis being a global network. Volume hirers with junior cohorts will also find the variable 5% fee less competitive than flat-fee global providers. For a multi-country EOR search, the broader market view is in our Best Global EOR guide.

Ecovis KSO is a credible, regulated, Germany-only EOR option for foreign companies that want partner-grade local execution rather than a self-serve platform. Pricing is transparent and competitive at the junior end, less so at senior salary levels. The hard 18-month AÜG cap and the absence of multi-country support are not flaws so much as structural realities that the firm is unusually upfront about. If German hiring is the entire scope, and compliance and labour law access matter more than software, this is a reasonable shortlist candidate.