What it means
Original cost, also called historical cost, is what the asset actually cost the business at the moment of acquisition. It includes the purchase price after trade discounts, plus every cost directly needed to bring the asset to the location and condition where it can operate.
The concept underpins the balance sheet because most fixed assets are carried at original cost less accumulated depreciation. That means the carrying amount you see in the accounts is an unwound version of the original cost, not an estimate of what the asset would fetch today.
Knowing what does and does not belong in original cost is where the practical work sits. Delivery, installation, professional fees, site preparation, testing and non-refundable purchase taxes are normally included, while staff training, general administration and the cost of fixing damage caused during installation are not.
The reason this matters commercially is that anything added to original cost is spread over the asset's life through depreciation, whereas anything excluded hits this year's profit in full. Two businesses buying identical machines can therefore report noticeably different profits in year one purely through their capitalisation policy.
The important nuance is that original cost is not the same as market value, and it does not change when prices rise. A factory bought for $2,000,000 twenty years ago still sits at that original cost in the records even if a similar building would now cost $6,000,000, which is why accounts prepared on a historical cost basis can understate the value of older assets.
In practice
Real-world examples.
Example
A dental practice buys a scanner for $48,000 and pays $4,000 to a contractor to reinforce the floor and run new cabling. Both amounts form part of the original cost of $52,000, because the scanner cannot be used without the site work.
Example
A haulage firm buys a truck for $95,000 including $7,000 of road tax and insurance for the first year. Only the $88,000 relating to the vehicle itself is capitalised as original cost; the $7,000 of running costs is expensed as incurred.
Example
A brewery imports a fermentation vessel and pays $12,000 in freight and $6,000 in non-refundable import duty. Both are added to original cost, but the $9,000 spent training staff to operate it is charged straight to the profit and loss account.
Formula
Calculation
Original cost = purchase price - trade discounts + delivery + installation + testing + other directly attributable costs
Annual straight-line depreciation = (original cost - residual value) / useful life in years
A packaging company buys a filling machine listed at $250,000 and negotiates a $20,000 trade discount, giving a net purchase price of $230,000. It pays $8,000 for delivery, $15,000 for installation and $7,000 for commissioning tests. Original cost = $230,000 + $8,000 + $15,000 + $7,000 = $260,000.
The machine has an expected useful life of 10 years and a residual value of $20,000. Annual depreciation = ($260,000 - $20,000) / 10 = $240,000 / 10 = $24,000. After four years, accumulated depreciation is 4 x $24,000 = $96,000 and the carrying amount is $260,000 - $96,000 = $164,000, even though the machine might be worth more or less than that on the second-hand market.Case study
Seen in the real world.
Hallgate Precision is a fictional component maker used here as an illustrative example. It installed a new production cell and recorded the original cost as simply the supplier invoice of $840,000.
During the year-end review the auditors found a further $61,000 of directly attributable costs sitting in repairs and maintenance: $34,000 of installation labour, $19,000 of foundation work and $8,000 of commissioning tests. Adding them brought the original cost to $840,000 + $61,000 = $901,000. They also found $23,000 of operator training that Hallgate had wrongly capitalised, which had to come out again, giving a final original cost of $901,000 - $23,000 = $878,000.
The net effect was to move $38,000 from this year's expenses onto the balance sheet, and the depreciation charge over the cell's eight-year life became ($878,000 - $70,000) / 8 = $101,000 a year. Hallgate then wrote a one-page capitalisation policy so that the finance team and the engineers agreed in advance which costs belonged in original cost.
Watch out
Common mistakes.
- Recording only the invoice price as original cost and expensing delivery and installation, which understates the asset and overstates the current year's costs.
- Capitalising training, insurance or general overheads that are not directly needed to bring the asset into working condition.
- Confusing original cost with current market value, and assuming the balance sheet shows what the assets could be sold for today.
Questions
People also ask.
Does original cost ever change after purchase?
It stays fixed except where a later cost genuinely improves the asset or extends its life, in which case that amount is added to the carrying value.
Is original cost the same as book value?
No, book value is original cost less accumulated depreciation and any impairment, so the two only match on the day the asset is bought.
Why do accounts use original cost rather than current value?
Because it is verifiable from an invoice, which makes it far harder to manipulate than an estimate of what an asset might be worth today.
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