Brexit: Everything You Need To Know, Part II: The FX Effect

 | Jun 16, 2016 12:27AM ET

by Clement Thibault

In just a few days, it’s conceivable that the European Union’s political and economic future could be reshaped by the UK’s June 23-scheduled referendum vote regarding whether Britain should retain membership in, or exit, the EU. Popularly known as ‘Brexit’—shorthand for Britain Exit—the vote outcome could have far-reaching consequences for not just the British and Eurozone economies, but also for global currency and equity markets in particular.

Over the course of three articles, the first of which was published earlier this week, we’re taking a deep look at what the vote means for all involved. Today’s article considers the consequences either a remain or leave outcome might have on major currencies. Part I, Brexit: Everything You Need To Know (But Were Afraid To Ask) , which was published on Tuesday, examined the reasons for the referendum; Part III, which we’ll publish early next week, details the affect the vote will likely have on global and UK stocks.

Prevailing opinion strongly holds that a Brexit from the European Union (EU) would hurt the pound sterling versus foreign currencies, especially vs the US dollar. The reason is simple—the UK's current account deficit.

Current account, which Q1 2016 , is -32.7B pounds sterling ($43.6B). According to the BBC that’s a record high for the UK.

If that number were shrinking, it would signal that the UK economy was on the right track. Unfortunately it’s been heading in the opposite direction. To make matters worse, it’s the UK’s largest current account deficit of the modern era, as illustrated in the graph below.