Historical Cost Convention
Assets are recorded at original purchase price β not current market value.
Under the historical cost concept, assets are recorded in the accounts at the price originally paid to acquire them, less accumulated depreciation. They are NOT revalued to reflect current market prices.
Why this is a limitation:
Land and buildings purchased decades ago at, say, $200,000 may now be worth $2,000,000. Yet the statement of financial position shows them at $200,000 (or less after depreciation, even though land is not depreciated). This has two significant consequences:
- Net assets (and therefore capital) are understated: the business looks less wealthy than it actually is.
- ROCE is overstated: capital employed is understated (because assets are undervalued), so the denominator of ROCE is artificially small. A business with long-established, paid-for premises will show a much higher ROCE than a new business that purchased the same premises at current prices β even if they are equally profitable and efficient.
Comparison problem: Two businesses in the same industry β one owning premises purchased 30 years ago, one leasing at current market rates β cannot be fairly compared using ROCE because their asset bases are measured on completely different bases.
Remedy: Some businesses periodically revalue their assets (especially land and buildings) to fair value and include a revaluation reserve in equity. However, this is optional and not all businesses do it, making comparisons across businesses inconsistent.
- Historical cost: assets shown at original price, not current market value
- Understates asset values β understates capital β overstates ROCE
- Especially misleading for land and buildings held for many years
- Makes comparisons between businesses with different-age assets unreliable