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Big Mac Index Shows Argentine Peso Overvalued on Income‑Adjusted Measure

The July 2026 update from The Economist highlights that adjusting prices for GDP per capita reverses the raw dollar reading and signals a 19% overvaluation of the peso.

Overview

  • The Economist's July 2026 Big Mac Index places Argentina 14th on its GDP‑per‑capita–adjusted ranking and calculates the peso to be about 19% overvalued versus the dollar.
  • By contrast, the index's traditional, unadjusted comparison finds an Argentine Big Mac priced at US$5.91, roughly 5% cheaper than the US price of US$6.22, which implies a small undervaluation of the peso on that metric.
  • The two readings diverge because the adjusted variant corrects for lower average incomes and labour costs in lower‑productivity economies by scaling prices with GDP per capita, which can flip a currency's apparent misalignment.
  • Regional results underline the method's impact: the adjusted index shows much stronger overvaluation for Uruguay (77.4%) and Colombia (63.6%), while the unadjusted table flags different leaders and several Latin American currencies as undervalued.
  • For consumers and policy makers the update matters because it separates affordability from nominal price, so watch for debate over exchange‑rate policy and cost pressures as analysts and officials use different measures to argue about the peso's true value.