New Delhi, Jan 23 (Agencies): India may have to wait till at least next year for information from Switzerland on possible black money trail to Swiss banks, as a treaty for the same might come into force only by the end of 2011.

The treaty needs to be ratified by various authorities in India as also in Switzerland, including the Parliament of the European nation, and it might come into force by the end of 2011 depending on these approvals, a spokesperson for the Switzerland's Federal Department of Finance said.

This means that India would be able to seek information on tax evasion and other financial offenses on incomes for the fiscal year 2012-13 beginning April 1, 2012, onwards and not for the past periods, experts said here.

Still, it is unlikely that the names of Indians having money in Swiss banks would be made public, as being demanded by the opposition parties, because such a step would not only be in breach of the bilateral treaty, but could also hinder the process of investigations, they added.

Indian government is facing intense pressure from the opposition parties, as also the Supreme Court, on issue of black money allegedly stashed away by some Indians in Swiss banks and other tax havens.

The issue of Indians having secret Swiss bank accounts has become a political hot potato, amid reports of Indians having billions of dollars in banks in Switzerland.

Finance Minister Pranab Mukherjee and Swiss Federal Councillor Micheline Calmy-Rey signed a "protocol" on August 30, 2010 to amend the double taxation agreement (DTA) in the area of taxes on income.

The revised tax treaty was expected to facilitate the Indian government seeking details about illicit wealth allegedly stashed away by Indians in Swiss banks. However, this Protocol has not entered into force.

Asked about the status, the Swiss Federal Department of Finance official said that one of the parliament commissions in charge of the DTAs last week decided to approve the DTA
with India and the parliamentarial approval process was expected to come to an end by September 2011.