evidence: In 2017, Guyana’s government added sanitary napkins and panty liners to the category of ‘household necessities’, conferring a zero-rated tax.9 In Puerto Rico, the project Menstruación sin IVU was proposed to exempt menstrual products from the payment of Impuesto de Ventas y Uso (sales and use tax—IVU, similar to a Value Added Tax [VAT]) in 2018.10 [...] Mexico, Ecuador and Barbados were the most recent countries to see widespread advocacy against menstrual taxes. Up until 2021, people who menstruate in Mexico and Ecuador paid 16.0% and 12.0% taxes, respectively on menstrual products.12 The national feminist collective #MenstruaciónDignaMéxico (Menstruation with dignity) advocated in Mexico for the elimination of menstrual product taxes, and promoted initiatives related to menstrual dignity. In 2021, the House of Representatives and the Senate of Mexico revised the level of taxation for menstrual products to 0% at national level.12 In the same year, Ecuador included menstrual products in the zero-tax rate as part a COVID-19 policy.13 Finally, in Barbados, VAT on sanitary towels and tampons was 17.5% until these goods were included on the list of ‘essential care and critical items’ in 2022, when the tax rate fell to 0%.14 [...] Nicaragua is an important outlier, as the only country in the region that has changed from having no-taxation to implementing taxes on menstrual products during the study period. Menstrual products manufactured in the Nicaragua were not taxed starting in 2012, however in 2019 the Legislative Power in Nicaragua decided to extend the list of taxed goods to increase tax revenue, and imposed a 15.0% tax on menstrual products.15,18