Negotiating Price Changes: What Evidence Actually Matters? JPV NEXA — Cost Intelligence, Episode 4 14 October 2026 Costs and entitlement are different questions A cost increase and a right to change the contract price are different questions. In Episode Three, we looked at what to monitor. Now we ask what that evidence can support. Our teaching scenario allows roughly a year for proposal preparation, award and mobilisation, followed by three fixed-price years and two optional one-year extensions. The first possible price review is in year four, if the contract allows it. This is not a universal United Nations rule. Check when the contractual clock starts, where mobilisation falls, and whether an option is exercised. Neither an extension nor a price increase is guaranteed. Read the mechanism first Before preparing a negotiation chart, locate the governing contract, its incorporated statement of work, price schedule and amendments. Read the order of precedence. Identify any adjustment mechanism, eligible costs, reference period, notice deadline, supporting documents and approval route. Does the provision use an index formula, a negotiated review, or another defined method? Who is authorised to approve the outcome, and from which date could it apply? If the mechanism is unclear, obtain contract-specific clarification. A useful management dashboard is not, by itself, a contractual claim. Keep operational forecasting and the formal price-review process connected, but distinct. Compare the same obligation Build the comparison around the same obligation. For food, match specification, origin, pack size, quantity and delivery terms. The F A O Food Price Index describes a basket of international commodity prices; it does not quote your particular delivered product. For fuel, match grade, market, taxes and currency. For freight, compare equipment and every transport leg, including inland delivery. For insurance, compare the cover, exclusions and deductible as well as the premium. Record quotation validity and index publication dates. Where a proxy is imperfect, say so. Check that fuel or insurance has not already been included elsewhere in the delivered price. Separate the causes of movement Next, separate the reasons costs changed. Paying a higher unit price is different from buying more, changing the product mix, losing stock or delivering inefficiently. Currency movements and freight changes also need distinct treatment. In a purely invented example, a component costs forty units within a total of one hundred. If its actual cost rises ten per cent and everything else stays unchanged, the new total is one hundred and four, not one hundred and ten. That arithmetic explains exposure. It is not a contract adjustment formula, and it does not establish an entitlement to charge four per cent more. Keep mobilisation separate Keep mobilisation separate from recurring operating costs. Where the statement of work prices mobilisation as a one-off item, do not automatically repeat that charge at an extension or price review. Readiness milestones can help demonstrate delivery, but payment follows the agreed payment terms. A change in location, capacity or service scope may need a separate contractual assessment. Establish what changed, who instructed it, its evidenced cost and the required authorisation. Do not assume every amendment creates a fresh mobilisation payment. Equally, do not confuse a properly authorised scope change with the routine price-review date in our teaching scenario. Test the whole-cost alternative Evidence should support options, not just a request for a higher price. Consider buying black pepper from one production lot to cover several years. Where the contract permits, this might reduce purchasing and testing costs per kilogram. But first validate consumption patterns, demand variability and the firm contract period. Compare those savings with financing, storage, shelf-life and surplus-stock risks. Coordinating supply across locations may also help, provided traceability and each contract's testing requirements remain satisfied. One lot does not automatically mean one test covers every delivery. Optional extensions are not guaranteed demand. Compare bulk purchasing with phased deliveries, while maintaining compliance and continuity. Make the evidence traceable Present a concise, traceable evidence pack. State the contractual basis, baseline, comparison period and requested effective date. Explain each cost driver, the supporting records, the calculation method and its limitations. Separate eligible effects from items that need further clarification. Include alternatives considered and explain how service performance and compliance will be maintained. Check that records agree across procurement, operations, quality and finance. Follow the contract's approval and documentation requirements before applying a changed price. An informal operational discussion should not be treated as authority to amend the contract. Keep the decision, correspondence and approved baseline together for future review. Continue the discussion Across this series, the sequence has been consistent: price the complete obligation, choose relevant evidence, monitor actual exposure, and prepare any review within the contract's rules. Good analysis improves a decision; it does not replace contractual authority. Which part of your evidence is hardest to reconcile: supplier prices, freight, currency, or operational variance? Share a general question, without disclosing confidential information. If these lessons are useful, you are welcome to subscribe or follow JPV NEXA. For tailored support, visit our website. Agree confidentiality arrangements before sharing sensitive documents. This is independent educational commentary, not legal advice or institutional endorsement. © 2026 José Paulo Viana. Sharing the original post or video link is welcome. Reproduction or adaptation of the author's original content requires prior written permission, except where permitted by law. Referenced materials remain subject to their respective rights.