[tremon]

The UK is a net contributor to the EU so the UK government could choose to fund all current commitments and still be better off.

As another commenter has posted [1], this had already been debunked in December last year [2]:

This claim is based on the UK being a “net contributor” to the EU budget as a whole. The size of that net contribution varies, but according to analysis [..] about 0.6% of nominal GDP. Models of impact to the UK economy on Brexit vary. [..] even the more optimistic assessments of the UK’s economic performance following a Brexit [..] model an immediate loss in GDP for the transition years following a Brexit. The size of that loss is substantially larger than the current net contribution of the UK to the EU budget.

[Brexit] is a sure-fire short term loss, wiping any free money for R&I investment until at least a decade down the line – according to the most optimistic scenarios.

[1] https://news.ycombinator.com/item?id=12081215

[2] http://blogs.lse.ac.uk/brexitvote/2015/12/05/debunking-the-m...