04 Noah Mobility Services

Taxation

Cross-border assignments create complex tax obligations for both employees and employers. We ensure full compliance, fair outcomes, and zero surprises.

Taxation
Overview

Cross-Border Taxation & Compliance for International Assignments

When employees move across borders, tax obligations multiply rapidly. Home-country and host-country taxes must be reconciled, social security agreements navigated, and benefit-in-kind arrangements properly structured — all while ensuring the employee feels fairly compensated.

Noah Mobility's taxation advisory services help companies and their employees understand and manage cross-border tax requirements with confidence. We work with qualified tax professionals in each jurisdiction to ensure every assignment is structured correctly from day one.

From tax equalisation policy design to shadow payroll and annual tax return support, we provide a complete framework that protects both the employer's compliance and the employee's take-home position throughout the assignment lifecycle.

40+

Tax Jurisdictions

100%

Compliance Rate

15+

Years Advisory

What We Offer

Taxation Services for the Full Assignment Lifecycle

Tax Equalisation

Design and administration of tax equalisation policies ensuring employees are neither better nor worse off due to international assignment taxes.

Tax Return Preparation

Home-country and host-country tax return preparation and filing for internationally mobile employees.

Shadow Payroll

Shadow payroll administration to ensure correct withholding tax and social security contributions in the host country.

Social Security

Navigation of bilateral social security agreements, certificate of coverage applications, and totalization treaty planning.

Compliance Review

Annual compliance health checks covering withholding obligations, reportable benefits, and employment tax exposure.

Cost Projections

Pre-assignment tax cost modelling to help HR teams budget accurately for the full tax cost of international assignments.

Process

How It Works

Our streamlined process ensures a smooth experience for both HR teams and employees throughout every step of the taxation journey.

1

Pre-Assignment Assessment

We model the tax position for both home and host country before the assignment starts, flagging any structural risks or opportunities.

2

Policy Alignment

We review or design the company's tax equalisation or protection policy to ensure it's fair, cost-effective, and compliant.

3

Year-Round Administration

Monthly shadow payroll, withholding tax remittances, and ongoing compliance monitoring throughout the assignment.

4

Annual Tax Filing

Preparation and filing of home and host country tax returns, including hypo tax calculations and gross-up adjustments.

5

Assignment End Settlement

Final tax reconciliation, payroll true-ups, and any repatriation tax planning at the end of the assignment.

Why Choose Us

Why Noah Mobility for Taxation?

Qualified in Each Jurisdiction

We work with certified tax professionals in every country, ensuring advice is locally accurate and legally sound.

Integrated Cost Visibility

All tax costs are visible in ARK ONE, giving HR real-time budget tracking alongside the operational relocation costs.

Employee-Centric Approach

We brief assignees clearly on their personal tax position so there are no surprises and no erosion of confidence in the assignment.

Policy Design Expertise

We help companies design fair, competitive, and cost-efficient tax policies that support talent retention on international assignments.

Powered by ARK ONE

All our taxation services are integrated with the ARK ONE platform — giving HR teams full visibility, real-time tracking, and a single source of truth for every case.

  • Real-time progress tracking
  • Automated task notifications
  • Centralised document management
  • Expert consultant matching
Learn about ARK ONE

Ready to simplify your Taxation process?

Let Noah Mobility handle the complexity while you focus on your people. Book a free demo today.