AI Analysis: Central government debt

Executive Summary

Canada's central government debt has grown dramatically over the 16-year period from April 2009 to December 2025, with gross liabilities rising 169% from $837 billion to $2.25 trillion and the sharpest acceleration occurring during the COVID-19 pandemic around 2020. The dataset tracks 32 distinct federal debt metrics across 201 monthly periods, revealing a heavily right-skewed distribution where a small number of very large aggregate categories — such as gross liabilities, interest-bearing debt, and net debt — dominate the overall debt landscape. Outlier detection and correlation analysis further confirm that most major debt categories move in tandem over time, reflecting coordinated fiscal expansion rather than isolated shifts in individual debt instruments.

Key Findings

• Canada's gross liabilities (Category C) grew 169.3% from $836,957M in September 2009 to $2,253,863M by December 2025, representing the largest absolute increase of any tracked debt category.
• The federal accumulated deficit rose 162.8% over the same period — from $492,352M to $1,293,884M — while net debt climbed 158.5% from $553,446M to $1,430,903M.
• The dataset's mean value of $357,641M is nearly double its median of $193,272M, confirming a heavily right-skewed distribution driven by a few very large aggregate debt categories reaching up to $2.26 trillion.
• The top three debt categories by average value are 'C. Liabilities, gross debt' (~$1.3 trillion mean), 'Interest-bearing debt', and 'Unmatured debt' — both averaging over $860 billion across the study period.
• 21 outlier data points were detected across 32 debt categories using a strict 3x IQR threshold, with most anomalies concentrated around the pandemic-era fiscal expansion of 2020.
• The standard deviation of $422,012M exceeds the mean, and the IQR spans $593,579M, reflecting enormous variability in debt values across the 32 categories tracked monthly.
• Negative values as low as -$5,583M appear in the dataset, indicating that certain categories incorporate asset offsets or surpluses that partially reduce Canada's net debt position.