Hiring a sales consultancy is one of the highest leverage decisions you can make. If you get it right, you inject experience, speed, and structure into your revenue engine. If you get it wrong, you burn capital, demotivate your team, and lose precious time that you will never recover.
The problem is that the market is full of empty promises. Knowing how to distinguish a true strategic partner from a "PowerPoint seller" is key.
And it all boils down to one thing: the difference between theory and execution.
Before discussing what you should look for, let's talk about what you shouldn't tolerate under any circumstances. These are the red flags that should make you run in the opposite direction:

A strategic sales partner is not an advisor, they are another player on your team. This is what you should demand:

Let's think of a startup we’ll call ‘TechScale.’ They have a promising B2B product, but their sales are chaotic. In their first attempt to scale, they hire a renowned consultancy that, after weeks of analysis, delivers them a spectacular 80-slide PowerPoint. The theory is impeccable, but they leave the team alone with the overwhelming task of implementing it. Two months and €5,000 later, nothing has changed.
After learning their lesson, TechScale looks for a new partner. This one, instead of preparing slides, sits with the team from day one, reconfigures the CRM, and restructures strategies that work instantly. They don’t tell them what to do; they do it with them. By the end of the month, they don’t deliver a PowerPoint, but a dashboard showing how lead response time has decreased by 40% and conversions have started to rise.
That is the difference between an advisor and a true partner.
A true sales consultancy does not just advise from the sidelines. They dive into your operation, execute side by side with your team, and take responsibility for delivering a measurable and tangible impact on your bottom line.
Don't pay for theories. Invest in results.