Govt to file appeal against arbitral award in Cairn retro-tax case The arbitration court unanimously ruled that India breached its obligations to Cairn under the UK-India Bilateral Investment Treaty Dipak Mondal | February 19, 2021 | Updated 10:17 IST India to appeal agasint Cairn arbitral award The government will file an appeal against Cairn arbitration award soon and will contest its sovereign rights to tax, sources in the finance ministry said. The ministry sources said that the government will also strongly contest other suits filed by Cairn Energy at various other international courts. An international arbitral tribunal had in December 2020 ruled against India's decision to retrospectively tax the capital gains made when Cairn UK Holdings Ltd sold shares in Cairn India Holdings Ltd, a Jersey company, to Cairn India Ltd, an Indian company.