- GDP per capita growth — living-standard growth and the denominator problem.
- Currency strength — the Canadian dollar against its G7 peers.
- Energy capital investment — capital spending across the energy and resource sector.
Unlike most metrics in this tool, there is no clean G7 comparison here: Canada is one country running thirteen internal trade regimes, so the benchmark is Canada against its own potential. The data shows a market left to stagnate. Internal trade has grown enormously since 1981, up more than 440%, but international trade grew more than twice as fast after the Canada–US Free Trade Agreement (1989) and NAFTA (1994), so the internal market quietly shrank as a share of the economy. The frictions that hold it back are mismatched regulations, licensing rules, procurement preferences, and professional-mobility restrictions. Every one is a governance choice the federation has promised to dismantle for thirty years and has not.
The decline is steady and old. Internal trade was worth 26.7% of GDP in 1981. By the early 1990s, as the Canada–US Free Trade Agreement and then NAFTA pulled the economy outward, it had fallen below 19%, and it has hovered there ever since, easing to roughly 17% in 2024. The internal market did not contract in dollar terms. It was allowed to stagnate while the country reorganised itself around exports to a single, now-unreliable partner. Measured against total trade, the internal share fell even harder, from just over half in the early 1980s to under a third by 1999, before clawing back slightly.
Picture an interprovincial barrier and you probably picture a truck stopped at a provincial line over different container rules. The expensive frictions are in services, where licensing, accreditation, and professional-mobility rules differ province to province. The IMF estimates that about four-fifths of the potential GDP gain comes from liberalising services, and the implied tariff is highest in the most heavily regulated of them.
Because there is no international league table for internal barriers, the natural benchmark is the size of the gain from removing them. Successive studies, most authored or co-authored by economists working with the IMF and the University of Calgary's Trevor Tombe, put the long-run real GDP gain in a wide band, from roughly $50 billion at the low end to about $210 billion. The estimates are contested: critics, including the Canadian Centre for Policy Alternatives, argue the modelling overstates the realistic gain. They do not dispute the direction. With the external engine faltering, this is the rare growth Canada controls entirely.
The IMF puts the average internal barrier at a 9% tariff equivalent. The Bank of Canada estimated the average US tariff on Canada at roughly 6% for late 2025. Canada taxes its own internal trade more heavily than its largest trading partner taxes it.
Goods barriers are real but modest (~10% tariff equivalent). Services run about 29% on average, and over 40% in health care and education, because professional licensing and accreditation rarely transfer across provinces.
Large, diversified provinces face relatively low internal trade costs; small and remote ones face multiples more. The IMF estimates Prince Edward Island could raise real GDP per worker by nearly 40 percentage points, with Atlantic Canada and the territories gaining most.
Internal trade grew more than 440% since 1981, but international trade grew more than twice as fast, so the internal share of GDP fell from 26.7% to ~17%. The market was left to stagnate, which makes the upside recoverable. Even sceptics who dispute the headline GDP gains concede the low end ($50B) exceeds most single federal programs.
Internal trade has fallen from 26.7% of GDP in 1981 to about 17% in 2024, and the barriers behind it are estimated to cost up to about $210 billion in long-run GDP.
- Compared with
- Canada's own record, with internal trade as a share of GDP measured against its 1981 level of 26.7%, and against its estimated potential gain from removing barriers.
- Where Canada sits
- Interprovincial trade was worth $527B in 2024, about 17% of GDP. The IMF puts the average internal barrier at a 9% tariff equivalent, and over 40% in health care and education.
- Which way it is moving
- Down. That is deteriorating. The share fell below 19% by the early 1990s and eased to roughly 17% in 2024, even as internal trade grew more than 440% in dollar terms.
- What the verdict follows
- Level against Canada's own 1981 baseline. The share is well below that level and has not recovered, so the verdict reflects both the level and the direction.
- Data basis
- Statistics Canada, Table 36-10-0222-01 (released 2025-03-19), annual 1981–2023, and the December 2025 interprovincial-trade release for 2024. IMF (2026) and IMF Working Paper 19/158 (2019), Macdonald-Laurier Institute (2022), and CCPA (2025). Page last reviewed June 2026 · Data current to 2024, the latest internal-trade year published by Statistics Canada.
Primary sources
- IMF (2026), Canada Can Grow Faster by Unlocking Its Own Market — ~7% / ~$210B long-run GDP gain; 9% national tariff equivalent; >40% in health care & education; ~80% of gains from services; provincial gains (PEI ~40 ppts).
- IMF Working Paper 19/158 (2019), Internal Trade in Canada: Case for Liberalization — $50–130B (≈3–7% of GDP) gain range.
- Statistics Canada, "Internal trade flows and frictions," Table 36-10-0222-01 (2025-03-19) — annual internal-trade-to-GDP and internal-trade-to-total-trade series, 1981–2023 (26.7% → 18.1% of GDP); internal trade +440.8% vs international +900%+.
- Statistics Canada, Interprovincial Trade (Dec 2025 release) — $527.2B internal trade in 2024; ~17% of GDP; $92–200B elimination-gain range.
- Macdonald-Laurier Institute (2022) — non-distance internal trade costs as tariff equivalents: goods ≈10%, services ≈29%.
- Canadian Centre for Policy Alternatives (2025) — methodological critique arguing the large GDP-gain estimates are overstated.
Methodology notes
- Definitions. "Internal" or "interprovincial" trade barriers are non-geographic frictions (regulatory differences, licensing, procurement preferences, professional-mobility rules) that raise the cost of trade across provincial/territorial lines. They are summarised as a tariff equivalent: the implied tax that would produce the same trade-dampening effect.
- No G7 comparison. Unlike other metrics here, there is no clean peer series: comparable countries are not internally fragmented in the same way, and cross-country "internal barrier" estimates are not produced on a consistent basis. The page therefore benchmarks Canada against its own estimated potential and notes the EU single market as the standing contrast for a deep internal market.
- Comparability. The GDP-gain estimates come from different models and vintages (IMF 2019 vs 2026; StatCan summary) and are shown as ranges, not a single number. The sector chart combines Macdonald-Laurier (goods/services) and IMF (health/education) figures; methods differ, so the bars indicate a gradient rather than one consistent series. The 9% national average and the goods/services figures are not strictly additive. The 1981–2023 trend is one continuous StatCan series (Table 36-10-0222-01); the 2024 ~17% point comes from a later StatCan release and is shown as a final marker, not spliced into the historical series.
- Contested magnitudes. The headline gains rest on general-equilibrium modelling that infers barriers from trade patterns rather than measuring each rule directly. Critics argue this overstates achievable gains. The page presents the full range and the critique rather than a single point estimate.
- Companion workbook. The editable series live in Governing_Interprovincial-Trade-Barriers_Data.xlsx. Only series the workbook contains are charted.
