Spreadsheets are good at starting, not at surviving review
A spreadsheet is often the first place an estate or trust calculation lives. It is flexible, familiar, and fast to share. For a single scenario, that can be enough.
The problem appears when the file becomes the system: more people edit it, more jurisdictions are added, more exceptions appear, and someone later asks how a result was produced.
At that point, the workbook is doing work it was never designed to do.
Where the breakdown usually happens
Spreadsheet estate workflows tend to fail in the same places:
- Hidden logic. Formulas, named ranges, and side tabs bury the reasoning that a later reviewer needs in plain language.
- Version drift. Copies multiply. It becomes unclear which file was used in the meeting, which rule version applied, and who changed what.
- Inconsistent interpretation. Two capable people can apply the same policy differently when the policy lives in comments and institutional memory.
- Weak records. A number can be exported. The assumptions and rule path that produced it often cannot.
None of this means spreadsheets are careless. It means they are a modelling tool being asked to serve as a governance record.
What review actually requires
A reviewable estate or trust workflow needs more than a result. It needs a way to reconstruct:
- the inputs that were known at the time
- the assumptions that were made explicit
- the rules that were applied
- the output that those inputs and rules produced
Without that chain, teams can still produce an answer. They cannot reliably defend it.
Moving from files to structured records
The alternative is not more documentation. It is converting policies and calculations into structured logic that produces the same result from the same inputs, and keeping that result tied to the record that produced it.
That is the standard RiGEL is built around: deterministic calculations, transparent assumptions, and audit-ready records for wealth, estate, and trust decisions. RiGEL does not replace professional advice. It helps teams keep the path to an outcome visible when the file is no longer enough.