Opening inventory

What it means

The value of inventory carried forward from the previous period, added at the start of the cost of sales calculation.

Example

Goods worth RM6,000 unsold at year end become the opening inventory of the next year.

Why it matters

It is added to purchases when finding cost of sales, so a wrong figure distorts gross profit.

In practice

Opening inventory is the first item added in the cost of sales calculation, in the trading section of the income statement. It is the previous period's closing inventory brought forward. In the ledger it is a debit balance on the inventory account at the start of the year.

For example, a business ended last year holding unsold goods valued at RM4,000. That RM4,000 becomes this year's opening inventory. It is added to net purchases to work out the cost of goods available for sale.

Students often confuse it with closing inventory, which is measured at the end of the period and deducted, not added. The link is direct: this year's closing inventory is next year's opening inventory. Because opening inventory is added into cost of sales, an overstated figure would understate this year's gross profit. So it should be valued accurately at the lower of cost and net realisable value.

If cost of sales workings often go wrong at the first line, one of our teachers can check your set-out with you using past-paper figures. Book a trial class.

Related terms

• Closing inventory
• Cost of sales
• Inventory

Syllabus reference: Cambridge 0452 and 0985, syllabus for 2027 to 2029, sub-topic 4.5 Valuation of inventory (page 15).

Definitions here are general accounting explanations for study. For your board's exact wording, see its official syllabus via Sources.