Uploaded April 2025 | Updated September 2026, 2 weeks ago

---

Read the equation details for yourself: ustr.gov/issue-areas/reciprocal-tariff-calculations

Full list of countries and their 2024 import/export values: ustr.gov/countries-regions

Footage of the Trump announcement from Liberation Day is from the PBS live broadcast. youtube.com/watch?v=oIDN0Yf8Z28&ab_channel=PBSNewsHour

Presidential debate footage from ABC news. youtube.com/watch?v=4dOgWZsDB6Q&ab_channel=ABCNews

NZ-USA import and export data from here:
tradingeconomics.com/united-states/imports/new-zealand
tradingeconomics.com/united-states/exports/new-zealand

The Impact of the 2018 Tariffs on Prices and Welfare by Mary Amiti, Stephen J. Redding, and David E. Weinstein jstor.org/stable/26796842?seq=1

"Mathiness" en.wikipedia.org/wiki/Mathiness

Yes, that is Sam Neill's wine. twopaddocks.com/products/two-paddocks-pinot-noir-2023

Huge thanks to my Patreon supporters. They pay the Stand-up Maths Tariff so you can watch these videos. patreon.com/standupmaths

CORRECTIONS
- None yet, let me know if you spot anything!

Filming by Matt Parker
Editing by Editing Matt
Written and performed by Matt Parker
Music by Howard Carter
Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician
Website: standupmaths.com