Details on how the government wants to change retirement income such as Old Age Security could be in the next budget, expected in March, said Diane Finley, the minister in charge.

Old Age Security won't be cut, but the government will take a look at the challenges facing the retirement income system, Prime Minister Stephen Harper said Monday.

Finance Minister Jim Flaherty is confirming the Harper government's interest in reforming retirement income programs, but says it's a "longer-term project" that won't be part of the budget this spring.

Ontario's New Democrats want to see the province's most affluent residents pay higher taxes, the first in a series of proposed amendments they have for the Liberal government's recently introduced budget.

Interim Liberal Leader Bob Rae says any change to Old Age Security would affect the Guaranteed Income Supplement and provincial social programs for seniors.