Inheritance Fraction Tree Calculator

Exact fraction shares, euro amounts, cross-inheritance links, and reverse-family-tree editing.

Family tree

Click a node to edit it. Drag the divider to resize, and use zoom to inspect large trees.
100%
Solid lines show primary tree branches. Dashed lines show extra inheritance sources.

Selected node

Estate
A cycle was detected, so some shares may not calculate. Remove the circular link.
Total share of estate
1/1
Amount inherited
€0.00
Local share among siblings
Children
0

Edit node

Weight controls the selected node’s share in its primary branch. Extra sources are managed below.

Children of selected node

These links divide the selected node’s share. Shared children can also receive an extra source from another parent.

Inheritance sources

Add another parent/source to the selected child. The child remains drawn under its primary branch, and the extra inheritance is shown with a dashed line.

Saved structure

Autosaved to your browser’s local storage. This JSON contains the editable structure, not temporary calculation values.