In Ireland, individuals receive tax relief at source when they take out health insurance directly from a trusted provider, which means the cost of the premium has already been discounted when they purchase it - which lowers the cost.
​

However, health insurance provided by employers (fully or partially paid) is classified as a benefit in kind. Your employer pays the gross value of the policy, and, unlike the individual process, tax relief at source has not been applied. Therefore, as an employee who enrols on a health insurance plan provided by your employer, you're entitled to your tax relief - but you must claim this back from the Revenue directly.

In short, whilst your employer pays this insurance, you, as an employee, can claim the tax relief as a tax credit from Revenue. See how you can claim this money back from Revenue here.