The moment a contract is signed, your sales team pops champagne. But in the delivery pit, your engineers are reading the Statement of Work (SOW) with growing horror. They see vague promises, impossible timelines, and features that don’t exist yet. This is the Handover Gap, and it is the single largest source of margin erosion in professional services firms.
For Scaling Sarah—the founder who has successfully grown a firm to $15M or $20M—this is a familiar nightmare. In the early days, you sold the deal, and you managed the delivery. The alignment existed because it lived entirely in your head. But now that you’ve split the functions, a dangerous chasm has opened up. Sales is incentivized on bookings (revenue), while Delivery is incentivized on margins (utilization and efficiency). These two engines are pulling in opposite directions.
The data paints a brutal picture. According to the Harvard Business Review, IT projects overrun their budgets by an average of 27%. Even more alarming, the Project Management Institute (PMI) reports that 40% of projects experience significant scope creep due to poor initial requirements gathering. When Sales promises a Ferrari for the price of a Honda, your Delivery team has two choices: burn their weekends to build it (destroying morale) or cut corners (destroying client trust). Both options bleed EBITDA.

Why does this happen? It’s rarely malicious. It is almost always a failure of Process Documentation and role definition. In most stalled Series B/C firms, the scoping process relies on "tribal knowledge" rather than rigorous validation.
Salespeople are optimists by trade. When a prospect asks, "Can you integrate with our legacy ERP?" the salesperson hears "Can we figure it out?" and says "Yes." The Delivery lead hears "Do we have a pre-built connector?" and knows the answer is "No." That single misunderstanding can cost $50,000 in unbillable engineering hours.
Research from SPI Research’s 2024 Professional Services Maturity Benchmark confirms that firms using integrated Professional Services Automation (PSA) tools—which force Sales and Delivery to work from the same data—achieve 24% higher project margins than those that don't. The difference isn't better software; it's the enforced discipline of documentation.
To close the gap, you must stop relying on heroics and start building systems. Here are the two protocols that high-performing firms implement:
We see this constantly in our revenue leakage audits: the most profitable projects are those where the Delivery lead approved the scope before the client signed.
If you are tired of the post-sale panic, implement this framework immediately. It moves your firm from "verbal agreements" to "documented reality."
Add a field to your CRM for every opportunity: Delivery Confidence Score (1-5). If a deal is about to close with a score below 4, it triggers a mandatory review by the VP of Engineering or Operations. This prevents "Hail Mary" deals from slipping into the backlog unnoticed.
Create a simple document listing your firm’s capabilities.
Green: We’ve done this 10 times; Sales can quote standard pricing.
Yellow: We’ve done this once; Sales needs a 30-minute check with Delivery.
Red: Custom work; Delivery must write the scope.
This removes the ambiguity that leads to tribal knowledge dependencies.
Stop allowing scope changes via email after the contract is drafted. Any change to the scope after the SOW is generated requires a "Change Order Zero"—even if the project hasn't started yet. This trains the client (and your sales rep) that documentation is binding.
This is the advanced move. Tie a portion of the Sales commission (e.g., 20%) to Project Margin or Client Launch Success rather than just Booking Value. When a salesperson knows they lose money if the project goes 50% over budget, they stop selling "vaporware."
As we discussed in our guide on standardizing delivery across firms, you cannot scale what you cannot predict. By forcing Sales and Delivery to speak the same language—backed by data, not vibes—you turn your delivery team from a cost center into a margin-expanding machine.
