The number is not up for debate. The board approved it, finance modeled it, and it is now the fixed point everything else has to work backward from. The plan's only job is to prove the commercial system can reach it.

Most companies skip that step. They build a plan, run it through finance, get it to reconcile mathematically, and call the work done. The math will hold. It always does. A financial model can be made to balance around almost any target. What the math cannot tell you is whether the commercial system underneath it can produce what the model assumes. The gap doesn't show up during planning. It shows up in Q2, when the pipeline that was supposed to materialize doesn't, and the plan that looked sound in December looks fictional by April.

Every commercial leader should ask this instead of admiring their own spreadsheet: What has to change for us to make the number?

Three equations changed

Three assumptions that used to hold steady have shifted, and most 2027 plans are still being built as if they haven't.

Resource. Growth used to come from adding headcount or spend. That lever is weaker now. Growth increasingly depends on the productivity of the commercial system you already have, similar people, similar budget, different output. A plan that assumes next year's growth will look like last year's is wrong already.

Demand. You can no longer calculate next year's pipeline from last year's model. Buyers research, compare, and form preferences before a rep sees them. Gartner puts the share of B2B buyers who prefer a rep-free experience at 67 percent. Forrester research cited by SBI puts pre-contact research at 70 to 80 percent of the buying process. Planning around identified demand alone, the leads already sitting in your funnel, means planning around a shrinking fraction of the real opportunity. Leaders now have to account for signal and unidentified demand too.

Productivity. AI has expanded what Sales, Marketing, RevOps, and Customer Success can produce. Expanded capacity does not automatically become higher output. SBI research found 56 percent of CEOs report no significant financial benefit from AI to date, and only 12 percent report gains in both revenue and cost. A plan that credits AI gains nobody has captured yet is built on a number that doesn't exist.

The real risk

Discovering the failure takes months. An assumption underneath the plan stops holding before anyone locks the plan in, and by the time anyone notices, the organization is already operating on it: quotas set, territories assigned, comp plans live. Unwinding it costs more than getting it right the first time would have.

The stakes for getting this wrong keep rising. Hitting a 2.5x MOIC over five years used to require about 5 percent annual EBITDA growth. Bain analysis and SBI research now put that number at 10 to 12 percent. More of the investment case has to come from operating performance, which means less room to absorb a commercial plan that turns out to be aspirational.

Three questions worth asking before the plan locks:

• Where has AI changed the economics of your business, and where is the plan taking credit for impact that hasn't shown up yet?
• How much of the demand your 2027 plan requires can you see, detect, or influence before the buyer has already formed a preference?
• If you designed your commercial model today, for the customers you expect to win in 2027, would you build it the way it's built now?

Commercial Plan Pressure Test

Finance already owns the question of whether the financial model adds up. GTM leadership owns a different one: whether the commercial reality underneath the number holds up.

That means working through four things as a team:

1. Where will the growth come from?
2. Where will the productivity come from?
3. What is preventing the organization from delivering that today?
4. What has to change to close the gap?

The CFO already knows the numbers reconcile. The CRO and CMO need to know the commercial system does too. Most annual planning cycles never force that second conversation. They validate the math and skip the operating reality, which is exactly the part most likely to be wrong.

The goal is a specific kind of discomfort: the GTM leadership team is looking at a plan the board has already approved and thinking, we've allocated the number. I'm not sure we've proven how we're going to make it.

That discomfort has a name a GTM leadership team needs to address: the Commercial Plan Pressure Test. The plan either holds up under scrutiny or it doesn't, and it's better to find out now than in Q2.

Three shifts add up to one management problem. Knowing what needs to change is easy. Building the capability to change it is hard.