Britain is facing a divorce bill from the EU for as much as 20 billion euros ($22 billion), according to a Financial Times analysis that shows the bloc’s shared budget is emerging as one of the biggest political obstacles to a Brexit deal.

More than 300 billion euros of shared payment liabilities will need to be settled in the divorce reckoning, according to EU accounts. It is a legacy of joint financial obligations stretching back decades — from pension pledges and multi-annual contracts to commitments to fund infrastructure projects — that Brussels will insist the UK must honour.

The sheer size of the upper estimate, which some EU-27 officials reckon is too low, threatens to poison the politics of the break-up and derail a Brexit transition and trade deal, according to several senior European figures involved in the process.

CNBC

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Great Britain and EU Brexit referendum concept