The Fitch ratings agency has said that a bailout request by Spain will not prompt negative credit rating action by the company.
Fitch said a rescue deal by European financial agencies and the ECB in the form of bond purchases would ease borrowing pressure for Spain.
It also said it would provide it with breathing space to implement ambitious fiscal and economic reforms.
Standard & Poor's rating agency issued a similar statement on Wednesday.
Spain has said it will consider asking for a bailout but it has called on EU authorities to state their conditions. The country is suffering its second recession in three years following the collapse of its property market.
Unemployment is near 25%. Madrid has already asked for up to €100 billion in aid for its troubled banks.
