Structuring Cross-Border Teams in 2026: The New Global Mobility Reality

By 2026, cross-border remote work will no longer function as an informal perk. It becomes a clear tax, social security, and permanent establishment issue, and several developments are driving this shift.

New telework agreements between Switzerland and EU/EFTA states are redefining how cross-border work is handled. Updated OECD guidance is strengthening the role of home-office arrangements in permanent establishment assessments. At the same time, European authorities are increasing audits on remote employees and multi-country work patterns.

Together, these shifts are turning remote work from a simple HR decision into a structured, cross-border arrangement with legal and tax consequences.

Why 2026 is a turning point for remote work compliance

The first shift is social security.

Since 1 July 2023, Switzerland and a group of EU/EFTA states have applied a Framework Agreement on cross-border telework. Where both countries are signatories (and where the employer obtains an A1 “telework” certificate), eligible employees can perform between 25% and 49.9% of their working time from their country of residence while remaining insured in the employer’s state.

This reshapes how the traditional 25% rule under EU Regulation 883/2004 applies in practice. Normally, performing 25% or more of work in the state of residence shifts social security there. Under the Framework Agreement, compliant telework can go up to just under 50% without triggering this change.

On the tax side, bilateral deals like the France–Switzerland agreement now tolerate up to 40% telework in the state of residence without automatically changing the existing allocation of taxing rights, again, only where strict conditions and data-sharing rules are met.

At the same time, global mobility specialists are seeing more audits on remote workers. Authorities are checking the 183-day rule, examining contractor classifications, and verifying multi-state social security coverage.

By 2026, these frameworks and audit practices will be fully embedded. Regulators will have several years of telework data—and they will use it.

Permanent establishment (PE) risk in the remote era

The second shift is corporate tax exposure.

The 2025 update to the OECD Model Tax Convention expands and clarifies when a home office can be considered a permanent establishment (PE) of a foreign enterprise. The key question remains whether there is a fixed place of business with a degree of permanence used for the enterprise’s business.

In practice, three patterns are driving “remote PE” risk in 2026:

Senior employees with market roles. A Swiss-resident commercial director negotiating and concluding contracts from home for a foreign company can create a dependent agent PE, even if the company has no legal entity in Switzerland.
Planned and supported home offices. If the foreign employer expects the Swiss home office to be used permanently, equips it, and routes Swiss or regional customers through that employee, authorities may view the home office as a fixed place of business.
Clusters of remote staff. A few remote engineers may be low risk. But a de facto Swiss team (with a manager, budget, and operational role) is far harder to defend.

“Accidental” PEs typically appear when a foreign group lets Swiss-based staff grow organically (sales, customer success, product), without aligning this reality with a Swiss tax and legal structure.

Payroll & Social Security Requirements for Remote Employees

The third shift is payroll mechanics.

Split payroll scenarios are becoming common. A Swiss employee working 60% in Switzerland and 40% from home in France may remain in Swiss social security under the telework Framework Agreement but still face income tax withholding or declarations in both states, depending on treaties and cross-border agreements.

How the “25% rule” works in practice under the coordinated system:

Below 25% telework in the state of residence: Classic multi-state worker rules apply; typically, no change in social security.
Between 25% and 49.9% telework: The Framework Agreement can keep the employee in the employer’s state, if all conditions are met and an A1 telework certificate is issued.
At or above 50% telework: The Framework Agreement no longer applies. Social security generally shifts to the state of residence under Reg. 883/2004.

Special cross-border tax agreements (e.g., France–Switzerland) add another layer, meaning taxation, social security, and payroll reporting often do not align in one country.

For HR and finance leaders, the risk is clear: a “friendly” remote setup that crosses thresholds can lead to retroactive contributions, interest, and fines.

Structuring options for cross-border workers

By 2026, improvised remote setups will feel outdated. Boards will be pushed toward defined structural choices:

Swiss subsidiary (AG or GmbH). Best when there is a stable Swiss market, local revenue, or growing headcount. Offers substance and banking stability but requires full corporate tax, VAT, and payroll compliance.
Swiss branch. Maintains legal unity with the foreign head office but exposes the firm directly to Swiss taxation. Often used for regulated or capital-intensive operations.
Employer of Record (EOR). A third party employs the worker locally and manages HR and payroll. Useful for one or two initial hires, but it does not shield a company from PE risk if the underlying activities create one.
Multi-entity workforce setups. Large groups mix local entities, EOR arrangements, and contractors. By 2026, this only works if carefully mapped against treaties, telework rules, and PE guidance. Patchwork solutions are what trigger audits.

How Switzerland’s rules differ from EU members

Switzerland aligns with the EU on social security coordination but remains outside the EU tax and labour-law framework. Three distinctions matter:

Taxation. Switzerland relies on bilateral tax treaties and country-specific telework deals. Thresholds differ—France allows up to 40% telework; other states apply different limits.
Social security. The Telework Framework Agreement applies only where both countries have signed. Companies must check participation and ensure employees fall within the 25–49.9% corridor.
Reporting obligations. Cantonal rules on wage tax, cross-border registration, and PE interpretation vary. What Zurich accepts may be treated differently in Basel or Geneva.

The result: copying an “EU remote work policy” into Switzerland rarely works without local adjustments.

How SIGTAX helps

This is where specialist structuring advice becomes essential.

SIGTAX supports founders and CFOs in setting up and running Swiss entities—from incorporation to tax planning, payroll, and cross-border compliance.

In the 2026 mobility landscape, this includes:

PE assessment. Mapping where employees work, what they do, and whether their roles could trigger a Swiss or foreign PE.
Payroll planning. Designing telework patterns, A1 applications, and withholding setups that comply with the 25–49.9% corridor and relevant treaty rules.
Structuring for remote teams. Helping companies choose between a Swiss subsidiary, branch, or EOR, and stress-testing that choice against substance, hiring strategy, and banking needs.
Ongoing compliance. Keeping telework policies, documentation, and registrations aligned as authorities tighten enforcement through 2026 and beyond.

Final word

The big shift is this: remote work is no longer a lifestyle perk. In 2026, it becomes a structural choice that shapes tax exposure, social security obligations, and the risk of creating a permanent establishment. Companies that recognise this early (and map their teams against Switzerland’s web of treaties, telework rules, and compliance thresholds) will keep mobility as a competitive advantage rather than a compliance hazard.

In that environment, having a partner like SIGTAX becomes less about convenience and more about clarity. The right guidance ensures your cross-border setup isn’t just functional, but future-proof.