On the Radar: Budget 2026 and the outlook for Canadian mortgage rates

Higher oil prices have helped Ottawa collect more revenue while making the Bank of Canada’s inflation problem harder to solve. Thursday’s budget puts much of the improved fiscal position back to work through tax incentives and spending. For mortgage borrowers, that creates an uncomfortable possibility. Stronger government finances can coexist with continued pressure on interest rates.

The government is betting that investment will expand Canada’s productive capacity enough to justify the borrowing required to finance it. The benefits could be substantial, but the spending and financing needs arrive before many projects generate an economic return. That timing matters for both variable mortgages and five-year fixed terms.

The scale of the choice becomes clearer over the full forecast. Economic and fiscal revisions improve the government’s position by $158.3 billion over the five fiscal years from 2026–27 to 2030–31, compared with the spring outlook. Policy decisions since then use $151.5 billion. Much of the additional room is being committed rather than retained as a buffer against another economic shock.

The agenda includes electricity infrastructure, housing and incentives for private investment. The Productivity Mega Deduction, announced in September and carrying a roughly $36 billion five-year cost, is intended to encourage businesses to bring capital spending forward. Because some major measures were announced before Thursday, the entire package should not be treated as a fresh surprise to investors or the Bank of Canada.

The rate question is whether public support attracts investment that would otherwise stall, or intensifies competition for workers and materials already in demand. Both can happen at once. A larger investment pipeline can improve the longer-term outlook while raising financing and construction costs before new capacity becomes available.

A smaller deficit still requires substantial borrowing

The projected deficit for 2026–27 is $62.3 billion, compared with $65.3 billion in the spring. Economic and fiscal revisions improved the starting position by $21.5 billion, but policy decisions since the spring use $18.4 billion of that improvement. The smaller deficit therefore should not be read as a withdrawal of fiscal support.

The cash requirement is a different figure. Ottawa projects financial requirements of $149.5 billion this fiscal year, including transactions such as loans, investments and capital spending that do not enter the annual deficit in the same way. Ottawa raises cash through bills and bonds to meet its financing requirements and refinance maturing debt.

The cost of carrying that debt is also rising. The budget projects public debt charges of $60.2 billion this fiscal year and $85.5 billion by 2030–31. A weaker revenue outcome or more expensive borrowing would leave less room for the investment strategy. Investors will be judging whether the projected growth and revenues materialize.

Revenue assumptions are therefore part of the interest-rate story. The budget relies on a stronger tax base persisting while its investment agenda develops. If commodity-related revenues fade before projects deliver the hoped-for gains, Ottawa may face a less comfortable choice between additional borrowing and adjusting its plans. If growth and revenues hold up, the same investment commitments become easier to finance.

The current fiscal year’s bond program remains $298 billion, with the revised funding plan relying more on Treasury bills. For 2027–28, however, planned bond issuance rises to $316 billion. Five-year issuance increases from $80 billion to $88 billion, or 10%, while the 10-year and 30-year programs remain unchanged.

That concentrates some of the additional supply in a maturity relevant to five-year mortgage pricing. If investors require a higher yield to absorb it, fixed mortgage funding could become more expensive. Strong demand for Canadian bonds could absorb the increase with little disruption. The issuance plan identifies a pressure to watch, rather than establishing where yields must go.

By Thursday afternoon, the five-year Government of Canada yield stood at 3.37%, below the previous day’s 3.43%, while the 10-year was 3.67%, down from 3.70%. Both benchmarks were lower at that observation point. These levels do not isolate the budget’s effect, but they challenge the assumption that more federal borrowing automatically means an immediate increase in mortgage rates.

The policy rate stands at 2.50% after last week’s quarter-point increase. In testimony Thursday morning, Governor Tiff Macklem reiterated that further increases could be needed. The Bank expects inflation to remain at or above 3% through much of 2027, with higher energy costs working their way into other prices.

The current forecast gives a 62% probability of a hold at 2.50% on December 9. The budget’s effect on that outlook will depend on how much additional demand its measures create and how quickly investment expands supply. Thursday morning’s testimony preceded the budget and should not be read as the Bank’s assessment of it.

A project can require workers, equipment and financing well before it starts removing a transportation bottleneck or increasing production. If spending arrives while resources are constrained, it can make inflation harder to contain. If investment improves productivity and supply, it can eventually support stronger growth with less price pressure. Implementation determines which effect dominates.

The package also supports spending more directly, including another one-time Canada Groceries and Essentials Benefit supplement planned for early 2027. That would help recipients meet everyday costs, but its economic effect differs from an investment that eventually increases production. Treating the entire package as future productive capacity would miss this distinction.

There is also an unchanged policy anchor. In a separate announcement Thursday, Ottawa and the Bank renewed the 2% inflation target through 2031. The investment agenda does not change the inflation objective against which future rate decisions will be judged.

For variable-rate financing, the budget matters mainly through its effect on the economy and the Bank’s subsequent decisions, which influence prime and other short-term borrowing rates. For a five-year fixed term, investors can reprice the outlook before another policy decision. Government yields, the lender’s funding costs and the spread charged on the transaction all matter.

For a refinancing or acquisition, this means distinguishing the benchmark yield from the spread and structure offered on the loan. A decline in government yields helps only to the extent that it reaches the lender’s funding cost and quoted rate. Wider funding or credit spreads can absorb that improvement.

A favourable outcome would combine easing energy inflation with investment that removes supply constraints. That could give the Bank more room to hold or eventually ease, while confidence in federal finances supports demand for Canadian bonds. A less favourable outcome would see spending accelerate ahead of capacity, with persistent inflation keeping policy restrictive and investors demanding more compensation for longer-term lending. These are different paths through the budget, not mechanical forecasts based on the deficit.

The next evidence to watch is whether investment commitments become operating capacity, whether tax revenues meet the forecast, and whether Canadian funding yields sustain Thursday’s improvement. December’s policy decision will matter most directly to variable-rate financing. Five-year fixed offers can move well before then. The budget’s effect on mortgage rates will emerge through inflation, investment and the demand for financing.