The account that keeps its balance and loses its owner
A solo founder's business bank account is a strange object. It holds real money — often the largest liquid asset the business has — and it answers to exactly one person. You open it, you're the signer, the balance grows, and you rarely think about it again except to move money out. It feels permanent because it feels boring.
Then the boring account becomes the problem nobody planned for. Because a bank account isn't a pile of cash you inherit. It's a contract between the bank and an authorized human. And when that human dies, the contract doesn't transfer — it locks.
This is the sole signatory problem, and almost every one-person business has it without knowing.
Why the bank freezes first and asks questions later
Banks are not being cruel when they freeze an account after a death. They are following the only rule that protects them from liability: money can only leave an account on the instruction of someone with legal authority to give it. The moment the bank learns the account holder has died, the person who had that authority — you — no longer legally exists as an account party. Any withdrawal a family member makes after that point is, technically, unauthorized.
So the bank does the safe thing. It restricts the account. Incoming deposits still land — customer payments, subscription revenue, that annual invoice you forgot was due. But outgoing movement stops. No transfers, no bill pay, no card charges, no payroll run.
For a sole proprietor, this is tangled further because the business bank account is often legally you. For an LLC or corporation, the account belongs to the entity — which sounds better until you realize the entity has no hands. A company can hold money, but only a natural person with signing authority can move it. If you were the only person with that authority, the company is now solvent and paralyzed at the same time.
The thing that unlocks it is slow on purpose
The legal instrument that restores access is called letters testamentary (if you left a will) or letters of administration (if you didn't). A probate court issues them to the person it recognizes as your executor or administrator. That document is what a bank will accept as proof that a new human is entitled to act for your estate — or, for a business, to step into the ownership interest that controls the account.
Probate is not designed for speed. Depending on the jurisdiction and whether anyone contests anything, getting those letters commonly takes weeks in the simplest cases and many months in ordinary ones. The court has to validate the will, confirm the executor, and sometimes notify creditors before it hands over authority. None of that process cares that your account has a payroll obligation on the 15th or a vendor who cuts off service after 30 days late.
So the timeline looks like this: money keeps arriving, obligations keep coming due, and the one door to the account stays bolted until a court unbolts it. The estate is rich on paper and unable to pay for a stamp.
Two mechanisms people confuse — and why one doesn't help you
Most people have heard of a payable-on-death (POD) designation. You name a beneficiary, and when you die the account passes to them outside of probate. It's clean and fast. It is also, in most banks' rules, a feature of personal deposit accounts — not business ones. You generally cannot slap a POD beneficiary on a company operating account and have the business keep running. POD transfers ownership of the funds to an individual; it does not transfer the authority to operate the business the funds belong to.
The mechanism that actually keeps a business account usable is different and unglamorous: an authorized signer. This is a second human the bank already knows and has already approved to move money on the account. Because the bank vetted them while you were alive, their authority doesn't evaporate the instant you die — it depends on the account structure and the bank's own rules, but a co-signer or additional signer on the business account is often the difference between "paralyzed for six months" and "operational next Tuesday."
The catch is that this requires forethought and, usually, an in-person or documented process at the bank: adding a signer to a business account typically means a corporate resolution or an updated signature card, not a web form. It is exactly the kind of errand that stays at the bottom of a solo founder's list forever, because it protects a future you refuse to imagine.
What the person stepping in actually needs to find
Here is the quiet failure mode that has nothing to do with banking law. Even after a family member gets the court's blessing, they have to know the account exists. Solo founders scatter money across accounts the way the rest of us scatter chargers — a primary operating account, a tax-savings account at a different bank, a merchant reserve, a dormant account from an old business idea. The revenue platforms deposit into one; the domain renewals draw from another.
A grieving person with letters testamentary in hand still has to reconstruct that map from bank statements, tax returns, and guesswork. Every account they don't find is money that eventually escheats — turns over to the state as unclaimed property — while overdue obligations pile up against the accounts they did find.
So the real problem splits into three:
Authority — who is legally allowed to move the money, and how fast can they get that standing.
Access — the practical credentials, the bank contacts, the account numbers, the knowledge that this account is even part of the business.
Instruction — what should happen. Pay these three vendors. Refund these customers. Let this subscription lapse. Wind this down gently or keep it alive for a buyer.
Probate can eventually grant authority. It can never grant access or instruction. Those only exist if you wrote them down.
The version of this that takes an afternoon
You can't shorten probate, but you can make the account survivable. Three moves cover most of it. First, add a trusted authorized signer to your primary business account through your bank's formal process, so someone can act before the court weighs in. Second, keep a current, single list of every business account — bank, account type, purpose, and roughly what flows in and out — so nobody has to reconstruct your finances from statements. Third, leave plain instructions for what the money is for in the first weeks: the recurring obligations, the customers owed refunds, the accounts safe to let go dark.
None of this is estate law. It's just refusing to be the single point of failure for your own money.
Where this fits
Heirloom is built for exactly this gap — the death-binder for solo founders. It gives you one place to record which accounts exist, who's authorized on them, and what should happen to the money the moment you can't move it yourself, so the person stepping in inherits a map instead of a mystery. It won't file your probate paperwork, but it makes sure the account isn't the thing your family discovers too late.
If your business banks on you being alive, spend one afternoon making it survive an ordinary Tuesday without you. You can start that map at heirloom.lumenlabs.works.