Compute inheritance tax for up to six heirs, each with their own relationship and share, calculate gift tax including the annual and the one-off increased exemption, or set gifting now against inheriting later. Both brackets, every exemption and the effective rate are itemised in the report.
For inheritance and gift tax, the relationship to the deceased or the donor drives both the exemption and the rate. The same € 500,000 costs a child considerably less than a grandchild, and a nephew or niece falls in the highest group. Because each heir also has their own exemption and their own bracket split, the tax on an estate is never a single percentage over the total — it is the sum of separate calculations.
The gift-versus-inheritance comparison turns on that same mechanism but with different exemptions: the annual gift exemption is small, the one-off increased exemption for a child substantial, and the inheritance exemption different again. The tool sets both sides against each other on one amount and shows the difference. The report states the tool version and the dataset vintage all exemptions, rates and the bracket boundary come from, so the calculation stays reproducible.