When a company moves an employee — whether that’s a six-month project assignment to Singapore or a permanent transfer to New York — the relocation policy is what determines whether that move succeeds or fails. Not the moving company. Not the visa lawyer. The policy.
A failed international assignment costs up to $1.25 million, according to a 2024 analysis by International SOS and KPMG. That figure includes compensation, relocation costs, ongoing assignment support, and tax — but it doesn’t capture the harder costs: the talent you lose, the project that stalls, the manager who has to rebuild a team from scratch. The organisations that avoid these outcomes share one thing: a relocation policy that was designed deliberately, not assembled reactively.
This guide is for HR teams and Global Mobility managers responsible for building, reviewing, or benchmarking a relocation policy. It covers what a policy needs to include, how to structure it by assignment type, what changes when moves cross borders, and how to decide between a lump sum and a managed approach.
What an employee relocation policy actually covers
A relocation policy is a formal document that sets out the support, benefits, and procedures an organisation will provide when it relocates an employee. For HR and mobility teams, it serves three distinct functions: it defines what employees are entitled to, it gives finance a framework for budgeting, and it gives the business a defensible, consistent standard for managing exceptions.
Most corporate relocation policies address some combination of the following: eligibility criteria, the expense categories covered, tax treatment of benefits, payback obligations, and the process for accessing support. What separates a functional policy from a strategic one is how precisely it maps these elements to the different types of assignments your business actually uses.
The difference between domestic and international relocation policies
A domestic policy — relocating an employee from Manchester to London — is primarily a financial and HR exercise. An international policy adds immigration compliance, tax equalisation, duty of care obligations, currency risk, and, in many cases, the complexity of moving an entire family. The two require different frameworks. Organisations that try to apply a domestic template to international moves consistently run into gaps that create cost, legal risk, or assignee dissatisfaction.
Who the policy applies to — and who it doesn’t
Eligibility criteria matter more than most HR teams give them credit for. Policies typically differentiate by employment type (permanent vs. fixed-term), seniority, distance of move, and whether dependants are included. Getting this wrong in either direction creates problems: too narrow and the policy looks arbitrary to the employees it excludes; too broad and exceptions become the norm, which is expensive and hard to manage at scale.
Is relocation assistance taxable in the UK?
HMRC allows employers to reimburse up to £8,000 of qualifying relocation expenses without triggering a tax liability. Most standard moving costs fall within this threshold. Anything above £8,000 is treated as a taxable benefit.
The move needs to qualify — typically starting a new job or being required to work at a different location — and must meet HMRC’s conditions. If your employer is arranging relocation through a provider like Gerson, tax reporting is handled as part of the service. See our guide on tax implications for relocating employees.