No. A project budget does not establish the employee’s qualifying knowledge. Use it only for the business fact it actually supports.
Avoid a financial proxy
An expensive project may still involve ordinary duties; explain the particular organizational knowledge needed.
Identify the specific company records and internal explanations actually needed for this claim, and keep that work separate from government filing fees, optional faster-processing requests, and any family filings. If the claimed knowledge is tied to a provincial trade certificate, apprenticeship record or journeyperson status, budget separately for obtaining certified copies or any credential evaluation those records may need, in addition to the usual government filing and legal preparation costs. A substantial internal budget cannot turn future learning into present capability or prove that the expanded assignment is covered by the current immigration arrangement. Requests for further evidence are common in L-1B generally and more likely where the knowledge originated elsewhere, so budget for a second round of professional work. Keep official charges, professional review and any training in three separate lines, since blending them hides which part of the budget actually buys evidence.