What are allowances for expatriates?

On the other end, an expatriate allowance (or “foreign service premium”) is designed to encourage employees to accept an assignment abroad and is an incentive and not designed to cover a specific cost. Its purpose is to reward the willingness of employees to relocate to another country.

https://mobilityexchange.mercer.com/insights/article/long-term-assignments-tips-to-manage-expatriate-allowances#:~:text=On%20the%20other%20end%2C%20an,to%20relocate%20to%20another%20country.