The Parliamentary Budget Officer published its Economic and Fiscal Outlook – October 2026 on 20 October 2026. It is a baseline under current policy. It does not include anything the government will announce in the budget. Hours later, the Department of Finance issued a media advisory: Finance and National Revenue Minister François-Philippe Champagne will table Budget 2026 on 5 November 2026.

The deficit path

  • 2026-27: deficit of $63.3 billion (1.8% of GDP).
  • 2027-28: peak of $70.2 billion (2.0% of GDP).
  • 2030-31: $67.8 billion (1.7% of GDP), which is $9.5 billion worse than the PBO projected in June.

Across 2026-27 to 2030-31, the PBO says deficits are $3.0 billion a year higher on average than in its June outlook. Higher prices for oil and other exports lift nominal GDP and tax revenue, adding fiscal room of $37.4 billion over five years. Most of that room comes early: $15.5 billion this year, shrinking to about $3 billion a year by the end. Measures announced since the Spring Economic Update cost $52.6 billion over the same five years, and that cost does not shrink. The PBO names the Productivity Mega Deduction ($36 billion) as the largest single driver, followed by $7.5 billion in tariff support and up to $5.4 billion for child-care agreements.

“On balance, the two fiscal anchors have imposed limited fiscal discipline on government spending and borrowing.” — PBO, Economic and Fiscal Outlook, October 2026

The two fiscal anchors

Anchor 1, balance the day-to-day operating budget by 2028-29: the PBO projects it is met, with a $6.2 billion operating surplus in 2028-29 after a $0.3 billion operating deficit in 2027-28. That near-balance in 2027-28 depends on an assumed $5.3 billion from tariff countermeasures. Without it, the operating deficit would be $5.6 billion. Of the $52.6 billion in new measures, $43.8 billion (more than 80%) is classed as capital and so sits outside this anchor. Without the new operating measures, the PBO says the operating budget would have reached a $3.6 billion surplus in 2027-28, a year early.

Anchor 2, a declining deficit-to-GDP ratio: the PBO projects it is missed. The ratio rises in 2027-28 and, slightly, in 2029-30. Without the measures added since June, it says the ratio would have fallen every year.

Borrowing, debt and interest

  • Cumulative deficits over five years: $333.3 billion. Federal borrowing over the same period: $732.9 billion. The gap is loans to Crown corporations, capital and defence purchases, and other financial assets that are financed with debt but are not booked as expenses up front.
  • Public debt charges are the fastest-growing expense: $24.5 billion in 2021-22, $59.3 billion in 2026-27, $83.0 billion by 2030-31. Per person: $640, then $1,419, then $1,952.
  • The debt-service ratio (interest as a share of revenue) rises from 10.5% in 2025-26 to 13.6% in 2030-31.
  • Federal debt-to-GDP rises every year, from 40.8% in 2026-27 to 42.6% in 2030-31. Federal debt per person goes from $33,436 to $39,191.
  • A permanent 1-point rise in interest rates would add $5.1 billion to debt charges in year one and $15.8 billion by year four. Net of offsets, the PBO says the deficit would be $3.2 billion worse in year one and $5.9 billion worse by year four.

The economy behind it

The PBO cut real GDP growth to 0.9% in 2026 and 1.5% in 2027 (June: 1.1% and 1.6%). It includes all U.S. tariffs and Canadian countermeasures in force on 1 October and assumes they stay. It estimates the trade measures, if permanent, lower the level of real GDP by about 1.4% over the medium term. It expects unemployment to rise to 6.7% by the end of 2026 and CPI inflation to average 2.8% this year. Revenue is up because prices are up, not because the economy is producing more. The PBO warns that the boost from oil prices fades after 2027-28.

Not in these numbers

The baseline does not include the cost of Canada’s NATO pledge to reach 5% of GDP on defence by 2035. The PBO says that could mean core defence spending of $163.6 billion by 2035-36 (see our report on its defence primer). It also excludes extending the 5% Canada Health Transfer escalator after 2027-28 (about $1.7 billion a year) and any extension of the temporary child-care money. It also excludes anything in Budget 2026.

Also on 20 October, the House of Commons rejected the Conservative opposition motion on the “affordability crisis”, 153 to 165 (Division No. 179).

Citizen impact: Every Canadian’s share of federal interest costs goes from about $640 a year in 2021-22 to $1,419 this year and nearly $2,000 by 2030-31, according to the PBO. That is money that cannot go to tax relief, health transfers or debt reduction. Who gains: businesses claiming the Productivity Mega Deduction, workers and firms receiving tariff support, and families in subsidized child care. Who pays: future taxpayers carrying a larger debt, and everyone if interest rates rise. The 5 November budget will show whether Ottawa adopts a deficit path the PBO can verify.

What this piece refuses

Do not say Ottawa “broke” its operating-balance promise. The PBO projects that anchor is met in 2028-29. Do not say the deficit “doubled”. The PBO’s 2030-31 figure is $67.8 billion against $58.3 billion in June. We did not use a figure circulating in coverage that Ottawa projected a $53 billion deficit at the end of the decade, because we did not check it against the Spring Economic Update tables. Do not say the budget will raise or cut any tax. Finance’s advisory sets the date, not the contents.

Bottom line

Verified from the PBO’s 20 October outlook: deficits of $63.3 billion this year, peaking at $70.2 billion and still $67.8 billion in 2030-31. The operating anchor is met in 2028-29, the deficit-to-GDP anchor is missed, and debt charges reach $83.0 billion. Budget 2026 comes on 5 November (Finance Canada advisory, 20 October).