Enter your own assumptions. The result is a worked example on your numbers — not a promise, and not a quote. Every program is different; this shows the order of magnitude.
Your assumptions
Remaining sites/companies in the program
Template drift, data quality, integrations, key-user availability
From a handful to 200+ on very large programs — burn continues while the program slips
Average across SI, freelancers, and software vendor staff
Key users, IT, and project staff pulled from their day jobs
Loaded cost, not salary
What one entity gains per month on the new system: inventory, labour, licence retirement
Cost of the slip
Total slipped weeks—
External run-rate—
External burn in the slip—
Internal cost in the slip—
Benefits deferred—
ORDER OF MAGNITUDE—
A WORKED EXAMPLE ON YOUR ASSUMPTIONS — NOT A QUOTE, NOT A PROMISE. ASSUMES SLIPS EXTEND THE PROGRAM SEQUENTIALLY.