The lifetime allowance is what moves scarce goods between generations without touching a living owner. Each person may receive inherited wealth and gifts up to the allowance: enough for a family home and heirlooms, not a coastline. Lifetime gifts count, and trusts and companies are looked through to the people behind them.
An heir keeps an inherited scarce good if their allowance covers it, if heirs pool their allowances, or if they pay the excess from money they earned. An heir who lived in the home may pay the excess gradually from contribution income, with no interest. Otherwise the good is released through the ordinary claim process. See who holds what is scarce.
Its size is a rule, reviewed on a fixed cycle; raising it counts as weakening it (the constitutional layer).