SINGAPORE — Singapore, one of the world’s largest international financial centers, said Tuesday that it would adopt new measures to make it easier to share information on potential tax evaders with other countries.

The Southeast Asian city-state, eager to avoid the kind of onslaught on tax cheats faced by Switzerland, said it would sign a multilateral treaty on sharing tax details created by the Organization for Economic Cooperation and Development, the association of free market democracies. The O.E.C.D. has 34 member countries, but Singapore is not part of the group.

It is expected to agree to the terms of the treaty, the Convention on Mutual Administrative Assistance in Tax Matters, this year.

The government also plans to change the law so that the tax office, the Inland Revenue Authority of Singapore, will not need a court order to get information from banks and trust companies sought by foreign governments, according to a joint statement by the central bank, the Finance Ministry and the tax agency.