A personal guarantee is uncapped downside you wrote for free, and it follows you out the door.

TL;DR: Founders sign personal guarantees on debt, leases, and credit lines and file them under paperwork. They are not paperwork. A personal guarantee (PG) is uncapped personal liability with no premium paid to you and no cancel button, and it does not end when you sell the business. It ends when you are released, which is a different event most sellers never arrange. The owner's move is to treat the guarantee as a term you negotiate at signing, when your leverage is highest, not a request you make at exit, when it is gone.

A founder signs a personal guarantee the way they sign a delivery receipt. Quickly. The lender slides it across, the lease requires it, the bank wants it on the line of credit, and it feels like the cost of doing business. So they sign, and they never think about it again.

That signature is the single most expensive one they will ever make. It quietly caps how boldly they grow while they own the business, because every new risk is now a personal risk. And it follows them out the door when they sell, because the buyer takes the company and leaves the liability with the person who signed.

I see this constantly. The guarantee is treated as a formality right up until the moment it is the only thing in the room.

Here is what a personal guarantee actually is, stated in the language of the people on the other side of your eventual sale.

It is an uncovered put option you wrote for free. You granted someone else the right to come after you personally if the business cannot pay. Uncapped downside. Zero premium collected. No expiration you control. No professional trader alive would write that position, on any asset, at any price, because the math is indefensible: unlimited loss, nothing earned for taking it on.

Founders write exactly that position on a Tuesday afternoon and call it paperwork. The bank understands precisely what it received. You are the only party to the transaction who priced it at zero.

The part that costs sellers the most is the part they assume is automatic. You sold the business. You did not sell the liability.

A personal guarantee does not end when you sell. It ends when you are released, and release is a separate negotiation that someone has to actually conduct. If the buyer defaults two years after close, the landlord and the lender do not call the buyer first. They call the name on the guarantee, on a business you no longer own and no longer control.

This is also why guarantees change what a sophisticated buyer will pay and how the deal gets built. An acquirer will never assume your uncapped personal downside, so the guarantee becomes their leverage: a reason to hold back more of the price, to push more of it into an earn-out, to make the structure thinner where you are exposed. The liability you treated as boilerplate becomes a discount the buyer prices in.

The move almost nobody makes is to negotiate the exit from the guarantee on the day you sign it. Your leverage is highest at signing, when the lender wants your deal and has not funded yet. It is lowest at exit, when you are the one who needs out. Build the escape hatch before you enter: a release trigger tied to a coverage ratio, a declining cap as the balance amortizes, an assignment release on a sale, a hard sunset date.

In any exit, a guarantee has to become one of four things. Extinguished. Secured by the business assets instead of you. Capped and dated. Or paid for, as an explicit line in the deal. Work them in that order, top to bottom, never bottom to top. "I will trust the buyer to run it well" is not a fifth option. It is the absence of a structure, and hope is not a structure.

Optionality is not just having buyers. It is being able to hand the company over cleanly, with nothing of yours still stapled to it. A founder who is personally guaranteeing the lease, the line, and the equipment notes has not built a business someone can simply take. They have built one that requires their continued personal exposure to function, which is the opposite of sellable.

The guarantee you forgot you signed is a thread running from the company back into your own balance sheet. Every one of those threads has to be cut before you are actually free, and the cheapest moment to arrange the cut is the moment you sign, not the moment you leave.

The owner's job is to make sure that when the wire hits, the only thing that follows you out the door is the money.

— Roland

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