What it means
A manufacturer budgets $10 for each component but pays $11 for a batch of 1,000, so the purchase price variance is $1,000 unfavourable under a convention in which actual cost above standard is unfavourable. That calculation identifies a difference; it does not by itself explain whether the buyer made a poor choice.
AccountingTools defines purchase price variance by comparing actual purchase price with expected or standard price, and Accounting Simplified presents a similar materials-price calculation, so the denominator, quantity timing and sign convention should accompany a reported number. Set a standard, since a price variance needs a baseline approved before or independent of the purchase, and a stale standard can turn a market-wide rise into repeated apparent failure.
Use comparable items, because grade, packaging, specification and delivery terms matter and a cheaper substitute may create quality cost elsewhere. Define quantity and price basis too: some organisations calculate on quantity purchased while others post a materials variance at use or receipt, and the policy should say whether freight, duties, rebates and nonrecoverable taxes belong in actual unit cost, applied consistently.
State the sign: actual price minus standard price times quantity yields a positive number when actual is higher, though some reports reverse this sign and label favourable differently. Separate price and usage, because paying more per unit is distinct from using more units than the production standard, and both can increase total material cost.
Watch volume discounts and minimum order quantities, since a larger order might lower unit price but raise inventory holding cost and obsolescence risk, and the extra stock can cost more than the saving. Check supplier terms, because a lower nominal price with faster payment or a deposit can consume more cash, so compare total landed economics.
Review timing, since a purchase committed last quarter may be received this quarter, so match the quoted rate, effective date and variance posting period, and check index-linked contracts, as commodity or energy clauses may adjust price as agreed and a variance can be expected even with correct purchasing execution. Validate invoice data, because duplicate charges, incorrect quantities and supplier credits can distort the actual unit price, so reconcile the source documents.
Look at quality outcomes, since a premium input may reduce scrap or defects and an unfavourable price variance can be a rational trade if total cost falls, and investigate favourable results too, because a surprisingly cheap component may be obsolete, lower-grade or missing freight. Link to procurement controls by checking purchase-order approval, quote comparison and contract price validation to find whether the variance was authorised, and assign causes carefully, since suppliers, market conditions, specifications, exchange rates and order timing can all contribute and not every unfavourable result is a buyer error.
Compare actual versus standard over time, as repeated gaps may justify updating the standard, negotiating terms or redesigning the product, preserving history when changing baselines. Reconcile totals by summing SKU-level variance to the period-level amount and explaining any accounting adjustments, since missing items can give a falsely small result, and connect to budgets, because a persistent variance affects gross margin and cash forecasts and the probable effect on future volumes should be quantified.
Use a supplier discussion with contract clauses, shipment records and quality evidence, track corrective action (if price setup was wrong, update master data and test later purchase orders; if demand planning forced urgent buys, fix the forecast process), and keep category context, since commodity-linked raw material and stable office supplies need different review cadences and a universal target for zero variance is unrealistic. For an owner, purchase price variance is a signal that actual input economics changed from plan, and it starts a cost inquiry rather than issuing a verdict on procurement.
In practice
Real-world examples.
Example
A component priced at $11 against a $10 standard for 1,000 units creates a $1,000 unfavourable variance under the stated method. The purchasing manager checks whether the supplier's price rise was in the contract. It was not, so she opens a query.
Example
A higher-grade steel costs more per tonne but cuts factory scrap. The price variance is unfavourable, but total cost per finished unit falls. Finance records both numbers so the trade-off is visible.
Example
A cheaper bulk order of packaging improves unit price while tying up cash in unused stock. The warehouse lacks space and the packaging begins to deteriorate. The apparent saving becomes a cost.
Formula
Calculation
Illustrative purchase price variance = (actual unit price - standard unit price) x quantity purchased. At $11 versus $10 for 1,000 comparable units, it is +$1,000, labelled unfavourable under this sign convention.
Worked example. A fictional manufacturer has a $10 standard price per component.
- Batch A: 1,000 units at $11. Variance = ($11 - $10) x 1,000 = +$1,000 unfavourable.
- If freight of $500 belongs in actual cost under policy, the actual unit price is ($11,000 + $500) / 1,000 = $11.50 and the variance is ($11.50 - $10) x 1,000 = +$1,500.
- Batch B: 2,000 units at $9.50. Variance = ($9.50 - $10) x 2,000 = -$1,000, favourable. Net variance across both batches is +$1,500 - $1,000 = +$500 when freight is included on Batch A.Case study
Seen in the real world.
This entirely fictional example follows Pine Fabrication. Finance found a positive variance after a component supplier increased prices. Procurement checked the contract, currency and delivery urgency; operations confirmed the alternative material would increase scrap. The team updated its forecast instead of assuming the least expensive quote was best.
The case does not set a required accounting treatment for every inventory system. In the invented figures, the supplier raised the price from $10 to $11 on 5,000 components, an unfavourable variance of $5,000. The cheaper alternative at $10.20 would have saved $4,000 on price but added scrap that operations valued at $6,000. Pine kept the original supplier and reset its standard for the next period so that the variance did not repeat as an apparent failure.
Watch out
Common mistakes.
- Comparing prices for items with different specifications without adjustment.
- Calling an unfavourable variance proof of procurement failure.
- Ignoring rebates and freight when the chosen price basis includes them.
Questions
People also ask.
What is the baseline?
An approved standard, budgeted or expected price for a comparable item.
Is favourable always good?
No. Quality, inventory, cash and delivery costs can offset a low unit price.
When should it be investigated?
Use value, recurrence and unusual exceptions under a threshold.
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