LONDON, Aug 1 Reuters Sterling39;s drop at the time of former Prime Minister Liz Truss39;s failed budget plans meant the British taxpayer stumped up tens of millions of pounds extra to fund Brexit divorce bill payments to the European Union, paid in euros, new figures show.

In its annual report published last month, Britain39;s finance ministry booked a 91 millionpound 118 million loss on currency movements related to payments to the EU under the terms of the Brexit settlement during the 202223 financial year.

In previous years, the Treasury39;s reportable losses have ranged between zero and a few million pounds.

About half of the 91 millionpound loss stemmed from a payment to the EU on Sept. 30, 2022, a week after the announcement of Truss39;s taxcutting Growth Plan according to a Reuters analysis.

This 855 millioneuro payment cost Britain 764 million pounds on a day when 1 pound would buy only 1.12 euros.

Back in April 2022, when the EU updated Britain39;s payment schedule for June through September, it assumed an exchange rate of around 1.18 euros per pound equating to monthly payments of 719 million pounds rather than 764 million pounds.

Truss39;s Growth Plan published on Sept. 23, widely known as the minibudget, formed the biggest package of tax cuts in decades and triggered a meltdown in British financial markets, exacerbated by the structure of pension funds.

In the immediate aftermath, sterling sank to 1.08 per euro on Sept. 26, its lowest level since…