A full understanding and sight of existing and proposed financing structures and documentation is needed for the Contracting Authority to be in a position to calculate any refinancing gain and enforce its rights effectively. Expert legal and financial advice should be obtained (to match the advice the Private Partner is likely to be receiving) to ensure the Contracting Authority is not at any disadvantage in analysing the effect of any refinancing proposal. External expenses incurred by the Contracting Authority when considering a refinancing proposal should be borne by the Private Partner and if the refinancing is implemented they should be deducted from the total refinancing gain amount prior to sharing. See Section 5.3, Sample Drafting 5, Clause (7).