Canada's Old Age Security (OAS) program, a near-universal monthly payment for seniors, is facing a fiscal reckoning. According to a new analysis from Scotiabank Economics, the cost of the program is on track to approach $100 billion a year by the end of the decade, driven by the country's rapidly aging population. That mounting bill is putting pressure on the federal government to rethink how the benefit is structured, even as political sensitivities make outright cuts difficult.
The Graying of Canada
Canada now has almost one in five people over the age of 65, a demographic shift that is reshaping the country's finances. As more Canadians age into eligibility, OAS—which provides monthly payments to most seniors regardless of their work history—has become a growing share of federal spending. Scotiabank notes that OAS already accounts for close to 60% of direct federal transfers to households.
Rebekah Young, Scotiabank Economics' vice president of economic policy, argues that the “next phase” of aging will be significantly more expensive than the last. The sheer scale of the coming wave of retirees means that maintaining OAS in its current form will increasingly crowd out other government priorities, from healthcare to infrastructure.
What Reform Options Are on the Table?
Since cutting benefits outright is politically unpopular, the bank points to two main redesign options. One is tighter income-testing, where OAS payments are reduced as a recipient's income rises above a certain threshold—a mechanism known as the “clawback.” The other is time-phasing, which would shift more support to later years, effectively turning OAS into a form of longevity insurance while leaving early retirement more dependent on personal savings.
Both approaches have trade-offs. Tighter income-testing could reduce the financial incentive for seniors to work or draw from retirement accounts, since additional income would trigger a reduction in OAS. Time-phasing, meanwhile, would require Canadians to save more aggressively in their working years to bridge the gap until larger benefits kick in.
What It Means for Investors
For everyday investors and savers, the debate over OAS reform is not just a policy story—it has direct implications for retirement planning. The key variable for many households may become not only the headline OAS amount, but when it arrives and how quickly it fades as other income changes.
If Ottawa moves toward tighter income-testing, the effective marginal tax rate on retirement income could rise, making it less rewarding to work part-time or draw from RRSPs in certain income brackets. That could shift the calculus for when to take Canada Pension Plan (CPP) benefits or how to sequence withdrawals from registered accounts.
If the government instead opts for time-phasing, younger workers may need to boost their savings rates to compensate for reduced support in early retirement. That could increase demand for tax-advantaged savings vehicles like TFSAs and RRSPs, and potentially influence the types of investments that are popular among retirement savers.
Broader economic conditions also play a role. The Bank of Canada's recent rate decisions, including its hold at 2.25% amid energy inflation and trade risks, affect the returns on fixed-income investments that many retirees rely on. Meanwhile, the trajectory of inflation and household spending—as seen in rebounds in other economies—can influence the purchasing power of OAS payments, which are indexed to inflation.
The Bottom Line
Canada's aging problem is not new, but its fiscal implications are becoming harder to ignore. With OAS costs on track to hit $100 billion annually, the federal government will face growing pressure to redesign the program in a way that balances sustainability with political reality. For investors and retirees, the details of any reform—especially the timing and income thresholds—will matter as much as the overall size of the benefit.
As Scotiabank's analysis makes clear, the next phase of Canada's demographic transition will be more expensive than the last. How Ottawa responds will shape retirement outcomes for millions of Canadians for decades to come.
