AI ROI: Avoid Budget Overruns by Pricing What Your Proposal Leaves Out
Here is how you can accurately price an AI proposal before you sign it.
Standard vendor proposals only price the vendor's software and initial work, so they don't show your full costs.
Your total cost of ownership (TCO) is everything you'll spend over the lifetime of the tool. I spent 15 years on the vendor side of enterprise SaaS, ensuring customers got value from their technology investment. I've worked with companies from right after go-live to more than 10 years later, so I've seen how costs accumulate over time. Reduce risk by building the full number before you sign.
Build your TCO from more than the vendor's quote
A typical proposal covers licensing and setup. BCG's 2026 research shows that AI implementations also require investment in new platforms, data, integration, governance, licenses and tokens.
Companies in BCG's survey spend 2.8% of revenue on AI funded outside the IT budget, which means the formal IT budget captures only part of what AI costs. Most of the work sits inside your business: BCG's 10-20-70 model puts approximately 70% of AI effort into changes to people, organization and processes, and none of that is in the quote.
When you include these internal efforts, your timeline and financial targets become much clearer and more realistic. Leave them out and the payback period looks shorter than it will be. You'll want to map out all expected costs across a three-year period, including initial setups, ongoing fees, and team time.
Budget the readiness work before it becomes business readiness debt
Planning your business readiness ahead of time protects your original budget. The issues will still show up mid-implementation, when the milestones are already set. The implementation team does the only thing it can: a band-aid fix, a workaround, or adding manual steps to the process to hit go-live.
By addressing these needs early in the project, you pay for the fix once.
Business readiness debt is every readiness step a company skipped each time it rolled out technology, and band-aid fixes like these are how it builds up. The real fix still has to happen, so you pay for the band-aid and then for the real fix, and your TCO goes up after you've signed.
So the savings come in low. In Bain's 2026 survey of 951 companies, nearly 40% of those that measured AI cost savings came in below 10%, against targets of 11% to 20%. Bain's authors call the fix organizational. Adding an explicit readiness budget item before kickoff means the real fix has money and an owner when the gap shows up.
Know what readiness this AI needs before you move forward
To size that line, look across the six domains of the Business Readiness Framework and find the gaps this AI can't work without. Each gap is a line in your TCO, and some keep costing you after go-live. One example from each:
Leadership & Investment Readiness: reserve funds for gaps found mid-project
Strategy & Governance: early legal and security checks
Data & Access: data cleaning and permissions management
Operating Model & Talent: training time and overtime while teams learn
Process & Technology: running the old and new systems side by side (for months)
Competitive Advantage: ongoing model updates and refinement
When you calculate these specific costs, you'll have a clear financial model that you can defend to your leadership team.
Waiting has a cost too: the return you defer. Price the delay against the overrun, and if waiting costs less, wait. If the honest answer is to wait, I'll tell you what to fix first.
At your next meeting, ask your project sponsor which budget pays for the extra hours while the old and new systems both run. If the answer is we'll absorb it, that cost isn't in your TCO.
Not sure where your gaps are? The free, 3-minute AI ROI Quick Check shows your biggest ones.
Internal readiness work is most of the work behind your TCO, and none of it is on the vendor's quote. By building a complete three-year projection up front, you'll know which gaps this AI depends on before you sign, and the business case you approve is the project you'll run.
Budget for your total cost, not their price.
Already have a proposal? Message me for an AI ROI Vendor Business Case Review. I'll stress-test the vendor's claimed cost and return, flag the risks to confirm before you sign, and give you a clear verdict: buy, build, partner or pass.
Next week, I'll show you how to check whether your business is ready before the vendor demo.
Andrea Lazaru, Cooper Rosebridge On your side of the AI deal
FAQ
How big should the contingency be?
Size it from the gaps you can already see, one line per gap. A percentage from a template leaves out the same costs the quote does.
Who owns these costs?
The leader whose budget pays for each line owns it. The project sponsor owns the total.
Does this apply if we build in-house?
Yes. The readiness work is the same whether a vendor or your own team builds the tool.
About the Author
Andrea Lazaru is the founder and president of Cooper Rosebridge Strategy & Systems Inc. She spent 15 years on the vendor side of enterprise SaaS, helping technology buyers get the full value of their investments. Her customers came from every industry and ranged from 50 to over 100,000 employees. She then became a senior leader at a healthcare organization, where she built a business transformation department from the ground up, owned the program budget and led organizational change across 10,000 clinical employees. Andrea holds an MBA in Management and Change and serves as an independent advisor to mid-market executives who are looking for AI ROI. She sells no software, takes no referral fees and accepts no implementation work. She leads every engagement personally and takes at most two clients at a time.
