James Walsh
Founder, ComplyEur
James Walsh is the founder of ComplyEur, which he built after watching UK employers try to answer a deceptively simple question — how many Schengen days does this employee have left? — from spreadsheets that quietly disagreed with each other.
He wrote and maintains the calculation engine the product runs on. It is deliberately boring: pure, deterministic, dependency-free of the database, and covered by property-based tests that check the rolling-window arithmetic against thousands of generated trip combinations. Every published figure on this site comes out of that engine rather than a hand-worked example.
He is not an immigration adviser and not a lawyer, and nothing on this site is legal advice. ComplyEur’s job is narrower and more useful: do the arithmetic reliably, show the trips behind the answer, and cite the published rules the calculation follows so anyone can check it. Where a question turns on legal interpretation rather than counting, the guides say so and point at the primary source.
Works on
- Schengen 90/180-day rolling window calculation
- Employee travel compliance monitoring
- EU Entry/Exit System (EES) record-keeping implications
Guides by James Walsh
- Business meeting or work? Checking a visa-free EU trip
A UK employee's trip can move from permitted meetings into work requiring approval. Use these scenarios and checks before booking EU travel.
Updated 07 September 2026
- Do holidays count towards an employee's Schengen limit?
Personal holidays and business trips use the same Schengen allowance. Learn what employers need to know without collecting excessive travel data.
Updated 07 September 2026
- EES vs ETIAS: what UK business travellers need to know
EES records border crossings; ETIAS is a pre-travel authorisation. See who handles each check and what UK employers need to change.
Updated 07 September 2026
- How to collect personal and business Schengen travel data
A practical, privacy-conscious employee declaration for combining personal and business Schengen dates without collecting a full holiday itinerary.
Updated 07 September 2026
- ETIAS for UK business travel: an employer checklist
ETIAS is expected in late 2026. See the official timing, €20 fee, passport rules, third-party applications, and employer approval steps.
Updated 07 September 2026
- How to import employee travel data into ComplyEur
Prepare, map, validate and correct an employee or trip spreadsheet before importing it into ComplyEur. Includes templates and error fixes.
Updated 07 September 2026
- Pre-trip compliance checklist for UK business travel
A practical employer checklist for passport, Schengen days, ETIAS, work permission, A1 coverage, documents, approval, and trip records.
Updated 07 September 2026
- How the ComplyEur Schengen calculator works
See the date rules, country treatment and verified boundary scenarios used by the ComplyEur 90/180-day calculator, including its limits.
Updated 07 September 2026
- When do Schengen days reset? The rolling window explained
Schengen days do not reset on one date. See how old travel drops out of the rolling 180-day window and when an employee can return.
Updated 07 September 2026
- Schengen 90/180-day rule: a complete guide for UK business
How the Schengen 90/180-day rule works, how the rolling window is calculated, and what it means for UK employees travelling to the EU for work.
Updated 07 September 2026
- Employee Schengen compliance: why spreadsheets break down
Where spreadsheet-based Schengen tracking fails as trip volume grows, and what employers need from a reliable compliance record.
Updated 07 September 2026
- What happens if you overstay the Schengen 90/180 limit?
What a Schengen overstay can mean for an employee and employer, how EES helps authorities identify it, and how to check a trip before booking.
Updated 07 September 2026
- Schengen Area countries: the 2026 business travel list
The 2026 Schengen country list for business travel, including how to handle nearby microstates and EU countries outside the shared allowance.
Updated 07 September 2026
- How EES works: a practical guide for UK businesses
How EES records UK business travellers, what happens at the border, and what employers should change about Schengen travel tracking.
Updated 07 September 2026
ComplyEur publishes guidance on how the Schengen 90/180-day rule is calculated. It is not legal or immigration advice. Where a decision turns on interpretation rather than arithmetic, take professional advice.