This OECD policy brief is the third in a series examining the impact of illustrative policy scenarios on global economic outcomes. This brief shows what can
be expected if trading economies were to reduce unnecessary trade costs associated with NTMs, drawing upon analysis using the OECD METRO
Model. Results are presented for G20 economies in terms of estimated changes in economic output, trade (including at the sector level), and incomes. Finally, overall policy considerations are summarised.