S&P says it has reaffirmed the highest possible rating, citing strong budgetary flexibility and a fiscal plan designed to bring the province's operating budget back to balance.
B.C., Alberta and Saskatchewan are the only provinces with the triple-A stable rating.
S&P says it could revise its outlook to negative or lower the rating if tax-supported debt as a share of operating revenues continue to rise.
Finance Minister Mike de Jong says three top-level ratings coming so soon after Budget 2013 are proof his government's goal of balancing the budget has been well received and the fiscal plan is on course.
The triple-A rating saves taxpayers millions of dollars annually in borrowing costs.
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