When a supplier proposes a price increase, first establish what changed, which orders it affects and whether you have accepted it. Then compare the cost of accepting, changing the purchase, negotiating or delaying. Earlier visibility gives you more time to act, but it does not guarantee that every option remains available.
This guide is for a buyer responding to a specific notice or confirmation. For preparation before a terms discussion, use the supplier negotiation guide.
Capture the proposed change before editing the baseline
Keep the original agreement, supplier message, effective date, affected items and the buyer’s decision. A supplier proposal, an accepted price and an invoiced price are different records.
Check whether the change applies to an existing accepted order, a future release or new orders only. Review the agreement and resolve any disagreement with the supplier before treating the revised price as approved. Do not overwrite the original price if you need to measure cumulative drift.
Ask these questions:
- Is the specification, pack size or usable quantity unchanged?
- Does the increase affect unit price, freight, another charge or a lost discount?
- What quantity and delivery period does the proposal cover?
- Does a substitution require separate technical or operational approval?
- Who can accept the change, and what deadline applies?
A smaller pack at the same case price can be an increase per usable unit. A new surcharge can change total acquisition cost while the product line price stays unchanged. Compare the same scope of costs without counting bundled charges twice.
Calculate the affected purchase value
For comparable units:
Proposed purchase increase = (Proposed unit price − Accepted unit price) × Affected quantity
Price change % = (Proposed unit price / Accepted unit price − 1) × 100
Use a positive baseline for the percentage. State currency, pack conversion and charge treatment.
In a fictional order, olive oil rises from $42.50 to $46.80 per identical case. Across 12 cases, the proposed increase is $4.30 × 12 = $51.60, approximately 10.12%. If only eight cases are ultimately invoiced at the higher price, the corresponding price difference is $34.40. Investigate any receipt shortage separately.
The proposed $51.60 is not yet a realized accounting variance or a loss of profit. Whether and when a purchase-cost change reaches COGS depends on the goods sold, inventory valuation and accounting treatment.
For a separate annual scenario, a 5% increase affecting 40% of an $800,000 cost base adds $16,000 if volumes, mix and recognition remain unchanged. A 40% share of SKU count would not establish that result. Apply the increase only to the affected cost base.
Compare the available responses
| Response | Check before deciding |
|---|---|
| Accept the increase | Availability, alternative cost, margin and spending authority |
| Adjust customer pricing | Customer response, competitive context and the full unit economics |
| Change the item or source | Specification, yield, qualification, capacity and delivery timing |
| Negotiate terms | Credible volume, payment timing, order frequency and concessions |
| Reduce, defer or cancel the buy | Actual demand, existing commitments, contractual terms and shortage consequences |
These options can be combined. A temporary acceptance may preserve service while a second source is qualified. A price hold may require a commitment that is unattractive if demand falls.
Absorb or re-price with the correct denominator
Suppose selling price is $100 and unit COGS is $62, giving 38% gross margin. If the entire $62 cost increases by 6%, new cost is $65.72. At the unchanged selling price, gross margin becomes 34.28%.
A $106 selling price would restore 38% gross margin under those assumptions: ($106 − $65.72) / $106 = 38%. That does not prove customers will accept the price or that sales volume and net profit will stay unchanged. If only one component of COGS rises, calculate its actual dollar effect instead of increasing the whole cost base.
Qualify substitutions before counting savings
Compare usable output and total operating consequences. A cheaper ingredient can require more preparation or have lower yield; an alternate component may need engineering approval. A different retail product can change customer demand.
Preserve the original and substitute item identities, quantity conversions and accepted prices. Update the relevant recipe, BOM or assortment records through the responsible owner’s process. Receiving a substitute does not by itself approve its suitability.
Negotiate the whole proposal
Ask what would make a price hold, smaller minimum or phased increase workable. Compare any concession you offer with the benefit received.
For example, early payment uses cash sooner. A volume commitment may add stock exposure. Smaller orders may lower average cycle stock while increasing freight or processing costs. A blanket agreement supplies price protection only where the accepted terms provide it.
A second source can provide an alternative, but it needs qualified goods, available capacity and a feasible arrival date. Neither ABC class nor an arbitrary 80/20 split proves that dual sourcing is economical for an item.
Maintain a price-change register
For each change, record the supplier, item, original baseline, proposal, affected orders, effective date, approval, invoice comparison and follow-up owner. Choose a baseline that answers the question: invoice versus accepted terms for compliance, or accepted terms versus the original plan for cost drift.
Set review triggers around dollar exposure, criticality, agreement terms and response deadlines. A small percentage on a large purchase can matter more than a large percentage on a minor one. Review missing or unmatched records explicitly rather than treating them as no change.
Purchase price variance should use comparable quantities and a declared sign convention. An invoice records an amount billed, not proof of payment. Keep cash settlement and inventory receipt evidence separate.
Test the supplier-to-finance handoff
In a LineNow purchasing demonstration, use a real price-change notice and a partial receipt. Inspect how the supplier message becomes a reviewable update on the living purchase order, how acceptance is recorded, and how the original and revised prices remain available.
Confirm the supported message channel and processing behavior in your setup. Follow the accepted order through receiving and invoice review; detecting a change should not silently authorize a substitution, approve a bill or schedule payment.
Agree which system owns the financial records and how corrections reach it. The useful result is evidence that lets the buyer decide earlier and gives finance a clearer basis for review.
