It's now 2 years since the Brexit vote, and we can tell what the Treasury's much-maligned short-term forecast got right. 1/
It was too negative on output. According to our estimate, the economy is 2.5% smaller than it would have been if Britain had voted to Remain. The Treasury's 'shock' scenario had it at 3.5%. cer.eu/insights/cost-…
It was a bit too negative about inflation. CPI peaked at 3.1% in 2017, which is about 1.5% higher than other advanced economies. It was far too negative about unemployment, underestimating the flexibility of the UK labour market.
Real wages have flatlined since the Brexit vote. In Germany, real wages have grown by around 3% over that period. The Treasury got that about right.
Sterling is down 9% from June 2016. Treasury said 10%.
Our estimate of the hit to GDP translates into extra borrowing of £26bn. (That's according to the government's own estimates of the fiscal hit from weaker GDP growth.) The same as the Treasury forecast.
Here's a podcast on our cost of Brexit estimate for those who don't want to move their eyeballs.
Here's a podcast on our cost of Brexit research cer.eu/media/cer-podc… 7/7
In short, The Treasury's 'shock' scenario got the path of GDP wrong - but not the cost. We have seen stagnation, not recession and bounceback. 8/7

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More from @JohnSpringford

May 12, 2021
My latest estimate is out, using the March data published this morning. It's worse than in February (trade was 5% lower than our old friend doppelganger UK then). 1/
That's because trade in the countries that make up the doppelganger grew more quickly than the UK's, and because the ONS revised February's trade data downwards. 2/
As a reminder, my estimate compares UK trade and other economic indicators to 22 advanced economies, and an algorithm selects a subset of those whose performance best matches the UK. 3/
Read 9 tweets
Mar 12, 2021
My estimates for the impact of Brexit on trade are out. Thread.

Leaving the single market and customs union in January reduced Britain’s total goods trade by £16 bn, or 22%.

cer.eu/insights/cost-…
That is on top of a 10% reduction in total trade between the referendum and the end of the transition period, compared to a doppelganger UK that remained in the EU.
My 2014 gravity model forecast that the loss of total goods trade would be 18%. @thom_sampson and co forecast a hit to total trade (including services) of 13%. The Treasury forecast 10%. It's worse than that so far.
cer.eu/publications/a…
Read 9 tweets
Dec 13, 2019
Some initial thoughts on the election result. In sum: Brexit will happen, but the economic risks will make it difficult for Johnson to bounce the country into an FTA. 1/n
This was no endorsement of Johnson’s FTA. He and Corbyn ensured there was no debate in the campaign about what it entailed. The EU will drive a hard bargain, with level playing field provisions and fishing rights being the demand for a quick and narrow agreement. 2/
There is little hope that customs in Northern Ireland or Dover will be ready by end 2020. In all likelihood, neither will the new immigration system. A quick FTA would also mean a hit to the economy. 3/
Read 6 tweets
Nov 4, 2019
My latest on the EU budget and climate change. TLDR: The Common Agricultural Policy is terrible for the climate. (Thread.)

cer.eu/insights/eu-bu…
The CAP consumes 37% of the EU budget. But emissions from farming have been flat since 2005, despite the EU spending 20% of the farm budget on climate action.
To which you might reply, well, maybe farm emissions have been flat but output has gone up, so the sector is improving?

Nope. Emissions 'intensity' - ie, as a ratio of output - has been flat in agriculture since 2008.
Read 7 tweets
Oct 21, 2019
People I respect often say that economic and political gravity will force the UK into a close relationship with the EU in time. I've made that point myself in the past. But I'm worried that this may not be true. 1/
This is the share of UK and German exports going to the EU since 1948.
The UK's decision to stay out of European integration was very costly, defying trade gravity - the rule that nearby, rich countries will be biggest trade partners. 2/
The UK made a political choice to prioritise trade with empire and commonwealth over Europe in the post-war period - with a high price for living standards. 3/
Read 5 tweets
Oct 17, 2019
1. NI in single market for industrial goods and agri-food
2. NI de facto in EU customs union, with rebates for imported goods from UK that are bought by *consumers* in NI (with supply chain checks to be settled later)
(Thread)
3. Consent by majority of MLAs in 2024 = 4 more years of protocol. Consent by dual majority = 8 more years.
4. No alternative arrangements references
What does this mean? Time limit by consent is a win for the UK, I thought that wouldn't happen. But consent is structured so that it is likely to be granted, because it is by simple majority.
Read 7 tweets

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