How to manage multi-entity household finances yourself

Step 1: Draw the entity map

List every legal owner in the household: each spouse individually, joint, the revocable trust, each LLC or S-corp, retirement accounts (which have their own ownership rules), custodial accounts, 529s, and any partnership or fund interest. Then assign every account and asset to exactly one owner. No "misc." bucket — an account you can't assign is an account you don't understand yet, and usually the first useful discovery.

The map surfaces real problems fast: the brokerage account that was supposed to be retitled into the trust and never was; the rental deed still in your name while the LLC exists precisely to hold it; the old 401(k) whose beneficiary predates your marriage. Titling errors are invisible day to day and expensive exactly once — at death, at a lawsuit, or at an audit.

Step 2: One balance sheet per entity, one for the household

Once accounts are mapped, produce two views you can refresh without effort. The consolidated household view answers "what are we worth?" The per-entity view answers the questions that actually govern decisions: What does the trust own? Is the LLC solvent on its own? What's exposed to my name personally?

The per-entity view is what your estate attorney means when they ask how the trust is funded, what a lender wants when the LLC applies for a mortgage, and what makes an umbrella-policy conversation concrete. If producing it takes an afternoon of copy-paste, it won't exist when you need it — which is why the assembly has to be automatic, not heroic.

Step 3: Respect the boundaries between entities

Entities only protect and organize if money crosses their borders deliberately. The operating rules:

• No commingling: the LLC's expenses come from the LLC's account. Paying the rental's roof repair from your personal checking is how liability protection erodes ("piercing the veil" starts as sloppy bookkeeping).
• Label every crossing: money moving between owners is a contribution, a distribution, a loan, or a gift — decide which, record it, and keep the paper. Your CPA will ask in March; "I moved some money over" is not an answer.
• Watch the transfer-vs-income distinction: a distribution from your own LLC isn't new income to the household even though it's a deposit; a transfer into the trust isn't spending. If your tracking can't tell these apart, savings rate and burn are meaningless.
• Keep entity cash real: each operating entity should hold enough of its own cash for its own obligations — a capital call, an insurance premium, a tax payment — without emergency transfusions from personal accounts.

Step 4: Run the paperwork seasons on a calendar

Multi-entity finance has seasons. January through April is K-1 season: every partnership and S-corp interest owes you a Schedule K-1, they routinely arrive late (private funds are notorious — a K-1 in September via extension is normal), and your personal return can't be final until the last one lands. Track what's expected, what's arrived, and file the extension calmly instead of in a panic.

Private-fund interests add capital-call season, which is to say no season at all: a call can arrive any week with ten days' notice. Log every unfunded commitment and its likely call window, and keep the cash reserve for it in the entity that signed the subscription. Quarterly estimated taxes, entity annual reports and registered-agent fees, and an annual beneficiary-and-titling review round out the calendar.

Step 5: Give your professionals the picture, not a shoebox

Your CPA doesn't want your logins, and emailing statements is how things get lost. The working pattern: a read-only view, scoped to what each professional needs — the CPA sees the entities and tax documents, the estate attorney sees titling and beneficiaries, an advisor (if you use one) sees the investment accounts. You stay the owner of the picture; they work from it.

This is also the honest division of labor: you run the system day to day, and the professionals apply judgment at the decision points — a trust amendment, an entity election, a multi-state question. Organized inputs make their hours count.

What this looks like in Formation

Formation's entity model does the assembly automatically: every account — synced read-only via Plaid or added manually — is assigned to its legal owner, and the dashboard produces both the consolidated and per-entity balance sheets on demand. Transfers between your own entities are classified so they never masquerade as income or spending, capital calls and K-1s have their own tracking, and household members and invited professionals each get their own sign-in with per-account visibility you control. AURA can explain any number's path — education-only, with every figure cited to its source.