"I'm quite confident the government will honor all of its debt obligations," Muhammad Ibrahim told reporters at the sidelines of an event in Kuala Lumpur.
"Also, with the resolution of 1MDB, it will improve market sentiments," he added.
1Malaysia Development Berhad (1MDB) has to make a payment on a $1.75 billion bond on Wednesday, but there was no indication yet on whether it would be paid.
Last month, 1MDB did not pay a $50.3 million coupon on another $1.75 billion bond, following a stand-off with Abu Dhabi sovereign fund IPIC, triggering cross-defaults on some of its other bonds.