--- title: Expatriate Payroll Articles, Insights and Resources | Certino | International Tax description: International Tax | Explore the latest expatriate payroll and global mobility research, insights and resources from Certino. --- [Skip to content](https://www.certino.com/blog/tag/international-tax#main-content) [![Certino Ltd. Logo](https://www.certino.com/hubfs/march-2021/globals/certino.svg)](https://www.certino.com/blog/) ![](https://cdn2.hubspot.net/hubfs/234700/_nov_2019/globals/nav.svg) - [Home](https://www.certino.com) - [Platform](https://www.certino.com/platform) - [Managed service](https://www.certino.com/managed-service) - [About us](https://www.certino.com/about-us) - [Connect with us](https://www.linkedin.com/company/certino/) - [Blog](https://www.certino.com/blog) - [Contact us](https://www.certino.com/book-a-consultation) Topic # International Tax [All](https://www.certino.com/blog) [Shadow Payroll](https://www.certino.com/blog/tag/shadow-payroll) [International Tax](https://www.certino.com/blog/tag/international-tax) [Technology](https://www.certino.com/blog/tag/technology) [![](https://www.certino.com/hubfs/gross-up-featured-image_1.png)](https://www.certino.com/blog/same-inputs-same-answer-why-cross-border-gross-ups-drift-and-how-to-stop-it) Global Mobility ### [Same inputs, same answer: why cross-border gross-ups drift, and how to stop it](https://www.certino.com/blog/same-inputs-same-answer-why-cross-border-gross-ups-drift-and-how-to-stop-it) Give the same assignee's pay data to three specialists and ask each for the gross-up. There's a good chance you'll get three different ... 29 Sep 2026 [Read →](https://www.certino.com/blog/same-inputs-same-answer-why-cross-border-gross-ups-drift-and-how-to-stop-it) [![](https://www.certino.com/hubfs/Cross-border%20commuter.jpg)](https://www.certino.com/blog/in-the-wake-of-the-pandemic-taxation-challenges-affecting-cross-border-commuters-have-increased-how-can-companies-remain-compliant-in-a-rapidly-changing-landscape) Shadow Payroll ### [In the wake of the pandemic, taxation challenges affecting cross-border commuters have increased: how can companies remain compliant in a rapidly changing landscape?](https://www.certino.com/blog/in-the-wake-of-the-pandemic-taxation-challenges-affecting-cross-border-commuters-have-increased-how-can-companies-remain-compliant-in-a-rapidly-changing-landscape) The expression ‘cross-border commuters’ is used to indicate those employees who work in one EU country and reside in another. They usually ... 14 Jun 2022 [Read →](https://www.certino.com/blog/in-the-wake-of-the-pandemic-taxation-challenges-affecting-cross-border-commuters-have-increased-how-can-companies-remain-compliant-in-a-rapidly-changing-landscape) [![](https://www.certino.com/hubfs/iStock-1252881195-min_opt.jpg)](https://www.certino.com/blog/shadow-payroll-reconciliation) Compliance ### [A brief guide to shadow payroll reconciliation](https://www.certino.com/blog/shadow-payroll-reconciliation) Payroll reconciliation might be a job that is unwelcome at this busy time of year, but it’s a critical component to shadow payroll. This ... 29 Nov 2021 [Read →](https://www.certino.com/blog/shadow-payroll-reconciliation) [![](https://www.certino.com/hubfs/blog_image02.jpg)](https://www.certino.com/blog/shadow-payroll-automation-how-to-reduce-international-employment-tax-overpayments) Shadow Payroll ### [Shadow payroll: How to reduce international employment tax overpayments](https://www.certino.com/blog/shadow-payroll-automation-how-to-reduce-international-employment-tax-overpayments) It’s no secret that there’s a lot to consider when it comes to calculating international employment tax for shadow payroll. 18 Mar 2021 [Read →](https://www.certino.com/blog/shadow-payroll-automation-how-to-reduce-international-employment-tax-overpayments) [![](https://www.certino.com/hubfs/blog_image05.jpg)](https://www.certino.com/blog/take-the-time-and-trouble-out-of-international-employee-rebilling-2) International Tax ### [Bring precision to your international employee cost accounting](https://www.certino.com/blog/take-the-time-and-trouble-out-of-international-employee-rebilling-2) How do the costs associated with your international employees get recorded in your books? Can you be absolutely sure that all costs have ... 13 Sep 2020 [Read →](https://www.certino.com/blog/take-the-time-and-trouble-out-of-international-employee-rebilling-2) [![](https://www.certino.com/hubfs/blog_image04.jpg)](https://www.certino.com/blog/take-the-time-and-trouble-out-of-international-employee-rebilling-3) International Tax ### [Take the time and trouble out of international employee rebilling](https://www.certino.com/blog/take-the-time-and-trouble-out-of-international-employee-rebilling-3) Inter-company rebilling processes for the costs of international employees (‘rebilling’) are complex. They demand a degree of internal ... 13 Sep 2020 [Read →](https://www.certino.com/blog/take-the-time-and-trouble-out-of-international-employee-rebilling-3) ## Sign up to our newsletter SIgn up and get the latest shadow payroll insights straight to your inbox ![sample8](https://www.certino.com/hubfs/march-2021/images/sample8.png) ![](https://www.certino.com/hubfs/march-2021/globals/iso-27001.png) ![](https://www.certino.com/hubfs/march-2021/globals/aicpa.png) ![](https://www.certino.com/hubfs/march-2021/globals/eu-gdpr.png) ![](https://www.certino.com/hubfs/march-2021/globals/eu-commission.png) ![certino-white](https://www.certino.com/hubfs/march-2021/globals/certino-white.svg) ###### Links - [Shadow payroll guide](https://www.certino.com/shadow-payroll) - [Platform](https://www.certino.com/platform) - [Managed shadow payroll](https://www.certino.com/managed-service) - [Research & insights](https://www.certino.com/blog) - [Book a demo](https://www.certino.com/book-a-consultation) ###### Contact - [+44 (0) 207 118 1405](tel:+44(0)2071181415) - [enquiries@certino.com](mailto:enquiries@certino.com) - [![linkedin](https://www.certino.com/hubfs/linkedin.svg)](https://www.linkedin.com/company/certino/) © 2026 Certino Ltd. All rights reserved. Company no. 10810451. Registered at 25 Moorgate, London EC2R 6AY - [Cookie policy](https://www.certino.com/cookie-policy) - [Terms & Conditions](https://www.certino.com/terms-conditions) - [Privacy policy](https://www.certino.com/privacy-policy)