Deferred tax is a notional asset or liability to reflect corporate income taxation on a basis that is the same or more similar to recognition of profits than the taxation treatment. Deferred tax liabilities can arise as a result of corporate taxation treatment of capital expenditure being more rapid than the accounting depreciation treatment. Deferred tax assets can arise due to net loss carry-overs, which are only recorded as asset if it is deemed more likely than not that the asset will be used in future fiscal periods. Different countries may also allow or require discounting of the assets or particularly liabilities. There are often disclosure requirements for potential liabilities and assets that are not actually recognised as an asset or liability.