Only firm owners can open this tab. An advisor still has room on one household, adjusting most numbers in that plan’s own Plan settings panel in the chat view, within the ranges you set. See Access and availability.
The four panes
The left rail groups them under Plan templates, Client persona, and Assumptions.Base template
Your firm’s default plan. Every Client persona is built on it.
Client personas
Your client archetypes. Your firm has three, installed the first time anyone opens Planning settings. Hazel matches each household to the closest one.
Solver assumptions
The planning inputs behind every figure, in three cards: Probability & simulation, Fees & taxes, and Decumulation strategy.
Market assumptions
The figures every plan is built against, under Returns, Volatility, Inflation and Taxes.
Which layer wins
A plan tags every planning value with the layer that set it, and Hazel ships a default for every value, so anything you have not changed reads as Firm. The tags are in the plan’s Appendix, in its Applied settings block.
A per-plan adjustment belongs to that plan alone, so a second plan for the same household still inherits your firm and persona values. Solver assumptions covers the panel and the few values it leaves out.
Numbers merge one value at a time, but shape and wording replace: a persona with its own plan design stops following the base design, and its instruction list stands in for the base list rather than adding to it. See Inheritance and re-syncing.
A number beats a sentence. Where an instruction and an assumption disagree about a figure, the value set in Solver assumptions or Market assumptions wins.