Tax & Labour Law Advisory

Practical tax & labour-law advisory from cross-border specialists

Clear, commercial guidance on employment, tax and immigration law for inbound and outbound mobility across jurisdictions.

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Trusted by global employers, scale-ups and Fortune 500s

Why it matters

We translate dense regulation into actionable steps. Our advisors combine nearly two decades of mobility experience with deep cross-border expertise — so you get answers, not memos. Whether you're sending talent out of the European Union or bringing them in, our specialists handle the full lifecycle on both sides of the border.

Topics & coverage

Tax advisoryLabour lawCross-border employmentHypothetical taxTax equalisationTreaty analysisInbound mobilityOutbound mobilityPE riskGlobal compliance

Why Nestlers

Built to own the complexity behind tax & labour law advisory.

We own the numbers

Calculations, filings and reconciliations driven to closure by your dedicated team — never punted back.

Local rules, applied correctly

Direct delivery in our core markets, plus a vetted partner network for the wider region.

Payroll plus everything around it

Pair payroll with tax advisory, social security and EOR — one contract, one accountability line.

Cross-border specialists on tap

Shadow payroll, equalisation and edge cases handled by senior specialists, often within hours.

Built to scale cycle after cycle

From a single payslip to multi-country payroll runs — the engine flexes with your headcount.

Audit-proof, every cycle

Full audit trail on every calculation and filing — designed to survive scrutiny.

Employment structuring for any direction of travel

Choose the right contract, benefit mix and tax treatment for each assignment type — whatever the origin or destination country.

Local hire vs. EOR vs. assignment vs. secondment
Tax residency mapping under treaties
Permanent establishment (PE) risk analysis

Cross-border tax — practical, not theoretical

Hypothetical tax, tax equalisation, shadow payroll and treaty analysis — modelled in your scenario, not in a textbook. We tell you the cost, the risk, and what to do about it.

Tax equalisation and protection policies
Treaty relief modelling for 60+ countries
International posting cost simulations

Policy design that scales

Mobility, remote-work and posting policies that work at 5 employees and at 5,000 — with templates, training and ongoing helpdesk for your HR team.

Mobility policies for inbound and outbound assignments
Remote-work and workation guidelines
Templates, FAQs and HR training included

Service catalogue

Every sub-service in this practice

Tax-residency, registration and assessment services for individuals working across borders.

Tax residency & registration

Tax residency certificate

Obtaining the tax residency certificate issued by the local tax authorities, including preparation, submission and follow-up.

Tax registration for foreign citizens

Registration of foreign individuals with the local tax authorities for compliance purposes.

Arrival / departure tax registry notification

Preparation and filing of the required tax residency notifications associated with arrival in or departure from the host country.

Tax assessment on posting contracts

Review and assessment of the tax treatment and obligations arising from posting or secondment arrangements.

How it works

A clear, four-step engagement

Diagnose

Workshop your current setup and identify gaps.

Recommend

A short, prioritised action plan with effort and risk ratings.

Implement

Roll-out with templates, training and ongoing helpdesk.

Sustain

Quarterly reviews and regulatory horizon-scanning.

Where we deliver from

Local Expertise. 60+ partner countries.

We employ, file and advise directly from our own entities in Romania, Moldova, Serbia, Bulgaria, Brazil and Colombia — and partner with vetted specialists in 60+ more countries to support your inbound and outbound EU mobility.

Bucharest

Romania

Headquarters

Chișinău

Moldova

Eastern hub

Belgrade

Serbia

Western Balkans hub

Sofia

Bulgaria

EU South-East hub