Vodafone has won the case against India over a retrospective tax demand of more than Rs 20,000 crore.
The Permanent Court of Arbitration at The Hague has ruled that the conduct of India's tax department is in breach of "fair and equitable" treatment.
Voafone had moved to the International Court of Justice (ICJ) in 2016 due to a lack of consensus between the parties' arbitrators in finalising a judge for the tax dispute.
Following this, a tribunal was constituted in June 2016 after Vodafone challenged India's use of a 2012 legislation that gave it powers to retrospectively tax deals like Vodafone's $11 billion acquisition of a 67 per cent stake in Hutchison Whampoa in 2007. The retrospective tax law had been enacted after the Supreme Court judgement went in Vodafone's favour.
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Vodafone had challenged the tax department's demand of Rs 7,990 crore as capital gains taxes (Rs 22,100 crore after including interest and penalty) under the Netherlands-India Bilateral Investment Treaty (BIT).
Following this decision, the company's shares in BSE rose 13.60 per cent to close at Rs 10.36. Vodafone had filed a petition against the Indian government in 2016 to the International Arbitration Center of Singapore, the International Arbitration Center. The controversy began over licensing fees and retroactive tax claims on the use of airwaves.
In 2007, the Indian Income Tax department had slapped a demand notice on Vodafone seeking capital gains tax.