Quick answer
These issues need document-specific review; neither a label nor an account title conclusively resolves them.
Do now
Gather signed agreements, business ownership records, tax returns, valuations, inheritance documents, and records showing how money was used. Identify guarantees and liabilities as well as assets.
Watch for
Do not alter business books or transfer assets to relatives. Mixing funds, agreement enforceability, and appreciation during marriage can create complex questions. Seek advice before assuming an asset is completely excluded.
Official sources
NJ Courts — Divorce, NY Courts — Divorce frequently asked questions, DC Courts — Divorce.
