This page explains thresholds, rates and aggregation rules for calculating Capital Acquisitions Tax
www.revenue.ie
If the beneficiary has no relationship to the disponer, then category C applies.
Group thresholds
Each group has a tax-free threshold amount. The threshold is cumulative and applies to the total taxable benefits you have received in that group. (You must include the taxable value of any previous gifts and inheritances received since 5 December 1991 in the same group.)
You only pay tax on the value of a gift or inheritance above the tax-free group threshold amount.
Applicable Tax -free thresholds since 7 December 2011