UK oil and gas revenues consist of offshore corporation tax (which includes ‘ring fence’ corporation tax and the supplementary charge) and petroleum revenue tax. These taxes apply to the profits of companies involved in the production of oil and gas in the UK and on the UK continental shelf (UKCS) (“The North Sea”). In our latest forecast, we expect UK oil and gas revenues to be £1.4 billion in 2017-18, representing less than 0.2 per cent of all receipts. The three streams of revenue are:
- ‘ring fence’ corporation tax (RFCT) is calculated in the same way as onshore corporation tax, but with the addition of a ‘ring fence’ and the availability of 100 per cent first-year allowances for virtually all capital expenditure. The ring fence prevents taxable profits from oil and gas extraction in the UK and the UKCS being reduced by losses from other activities. The current rate of tax on ring-fenced profits is 30 per cent;
- the supplementary charge (SC) is an additional charge on a company’s ring-fenced profits (but with no deduction for finance costs). The current supplementary charge rate is 10 per cent. It was reduced from 20 per cent on 1 January 2016; and
- petroleum revenue tax is a ‘field-based’ tax charged on the profits arising from individual oil and gas fields that were approved for development before 16 March 1993. The rate of PRT was permanently set at zero per cent effective from 1 January 2016 but it has not been abolished so that losses (such as losses arising from decommissioning PRT-liable fields) can be carried back against past PRT payments. PRT was deductible as an expense in computing profits chargeable to RFCT and SC.