Taxes on RSUs vesting while granted in another country

[Julian95]

I joined Microsoft in Ireland. There I got RSUs granted that would go into my US Fidelity account. When vesting I would roughly pay 50 % of taxes on those to the Irish government. I then moved to the US but I am still getting RSUs that I initially got granted in Ireland since they vest over a period of 5 years. Now in the US the taxes on those stocks are much lower. The question came up whether I need to pay taxes to the irish government on the RSUs granted there generally and especially considering the tax percentage is so much higher in Ireland. So basically would I need to pay taxes on those RSUs to Ireland?

[MarilynG1]

You would not be liable for taxes in Ireland for RSU shares that vested while a US resident.

Here's more detailed info from Irish Tax Revenue.

For more info on how the US handles this, see RSU's and Taxes. 

If you vested/sold on the same day, you may get a 1099-B to report the sale, and should end up with a small gain/loss when entering in TurboTax.

@Julian95