The World Bank, the Asian Development Bank (ADB) and the International Finance Corp (IFC) have been given approval to be the first foreign issuers of baht bonds as the government tries to promote the Thai debt market.
"The three have proposed to sell 4.0 billion baht bonds each and they are likely to do it at the same time," source told Reuters, adding the ministry wanted to give them more time.
"We did not ask for any conditions, but the maturity of the bonds should be at least five years."
In April, the government gave the three lenders, all of which have extended development loans to Thailand, approval to issue up to 15 billion baht worth of domestic currency bonds within the current fiscal year ending September.
The remaining three billion baht bond issue would be for the Japan Bank for International Co-operation (JBIC), the source said.