The trailing twelve months
Founders think of an exit as an event: a day when the deal closes and the money arrives. Buyers think of it as a snapshot. They price the business on its trailing twelve months, the most recent year of results, checked line by line in diligence.
Buyers also read the trend inside those twelve months. A business whose results improved steadily through the year tells a different story from one whose best month was a single large order. A buyer will ask for the trailing twelve months month by month, alongside the last three years, so both the level and the direction of the numbers are on the table.
That changes when the important decisions have to be made. A change that will matter to a buyer has to show up in those trailing numbers, which means it has to be made well before the sale. The decisions that set the price are made twelve to thirty-six months before the closing date, when they still have time to appear in the numbers a buyer sees.
The exit date is the one input everything else is solved for. Pick it, even provisionally, and work backward.
Five windows, counted back from close
The playbook's exit timing window divides the years before a sale into five windows, counted back from the closing date. The months are illustrative; every sale runs on its own calendar.
| Window | Before close | What has to happen |
|---|---|---|
| The build window | Thirty-six to eighteen months | Move up the range: a management team, recurring revenue, customer diversification, systems. Combinations and add-ons. |
| The clean-up window | Eighteen to twelve months | Accrual books; reviewed statements; licenses and leases transferable; add-backs documented; personal expenses out. |
| The positioning window | Before the engagement is signed | The Go-To-Market Analysis (GTMA); decide the category and the story; fix or frame the diligence flags. |
| The process window | Seven to twelve months | The sale, in four phases: prepare, market, select, close. |
| The hold-still window | Diligence and close | Run the business normally. No surprises: no big hires, no big customers lost, no experiments. |
Illustrative. The windows show an order of work, not a schedule for any one business.
The build window is where the business moves up its valuation range. The clean-up window is where the numbers become defensible. The positioning window is where the founder decides how the business will be presented and deals with what a buyer would find. Then comes the sale itself, seven to twelve months from signing to the wire, and inside its last phase, diligence and close, the hold-still window.
A founder who starts in the process window has skipped the windows where most of the value is created. That is not a reason to give up on a sale. It is a reason to know, before starting, which work is still possible and which is not.
If the date is closer than the windows allow, the order of work still holds; it only compresses. Start with what a buyer will price most heavily and what can be fixed fastest: the books, the add-back file, and the contracts that need to be written down and signed. Work that cannot show up in time, such as building a management team from nothing, becomes an honest conversation with buyers about where the business sits, and the structure of the deal reflects it.
The dates you cannot move
Some dates are fixed, and the rest of the plan has to be scheduled around them.
- Tax and holding-period dates. Some tax treatments depend on how long an asset has been held, such as those for Qualified Small Business Stock (QSBS). Whether any such date applies to you, and what it means for your timing, is a question for your CPA and tax attorney, and an early one.
- Leases. A lease that ends, renews, or needs a landlord's consent to transfer can shape the timing of a sale, and a buyer will read it closely.
- Contracts. A major customer contract up for renewal, or a supplier agreement that cannot be assigned without consent, is a date a buyer will ask about. Renewing it before the sale, or knowing exactly when and how it renews, removes a question.
- Partners' timelines. When a business has more than one owner, each may have a different date in mind. Agreeing on one, or on how the sale will handle different ones, is part of the plan, and it is better settled before buyers are involved than in front of them.
Map these dates first. If the target close sits on the wrong side of one of them, the plan changes, not the date.
What hold still means
The last window is the shortest and the hardest. In the final months before closing, the buyer is in diligence, reading every month of results as it arrives. The job in those months is to run the business normally.
That sounds simple. In practice it means no surprises. No large hires that change the cost base. No new ventures or experiments. No change in how revenue or expenses are recorded. Above all, no customers lost that could have been kept with attention. A weak month during diligence gives a buyer a reason to revisit the price, and a founder distracted by the sale is more likely to have one.
It also means keeping the team steady. Key people who sense a sale and worry about their future can leave at exactly the wrong moment. Who knows about the sale, when they learn, and what they are told are decisions to make deliberately, with your advisors, before the process begins.
This is why the work in the earlier windows matters so much. A founder who has prepared well has little to do in these months but keep the business steady. A founder who has not is trying to fix problems and run the company at the same time, while a buyer watches.
Pick the date. Work backward. Then hold still.