When to use a child pie instead of a direct slice
Child pies are helpful when a group of holdings has one purpose, such as broad ETFs, dividend holdings, or sector exposure.
A child pie is the right tool when a group of holdings shares one purpose that the master pie should see as a single number.
The difference between a direct slice and a child pie
A direct slice in the master pie represents a single holding — one ETF, one stock — assigned a target percentage. A child pie represents a named group of holdings that together fill one percentage in the master. The master pie sees a child pie as a single slice (say, 35% to "Broad ETFs"), while the child pie contains multiple holdings that split that 35% internally. The master stays readable; the detail lives one level down.
When a child pie adds value
Use a child pie when a group of holdings serves one clear purpose and you want to track them as a unit without cluttering the master. Examples: a dividend income sleeve with four to six ETFs monitored together; a sector allocation block with individual stocks in the same industry; a bond or fixed income group across multiple maturities. The child pie keeps the master at a strategic level while giving you per-holding detail inside the group.
When a child pie adds unnecessary complexity
For a small account with three or four total holdings, a child pie creates overhead with no benefit. The master pie can handle direct slices cleanly at that scale. A child pie also adds friction when you want to quickly adjust a single holding's percentage — you have to navigate into the child rather than editing directly on the master. If you find yourself editing child pies rarely, the structure may be more complex than necessary.
How deposit planning flows through child pies
When you run a deposit planning estimate, WealthPie first splits the planning amount across master pie slices by their target percentages. The portion allocated to a child pie then flows into the child pie's own slice percentages. This means a well-structured child pie automatically shows how each deposit distributes down to the individual holding level — making it easy to confirm you are buying the right things before visiting your brokerage.