VCAS9150 | Cash accounting scheme: Previous changes to the scheme: Changes introduced on 1 October 1990
From HM Revenue & Customs · VAT Cash Accounting Scheme Manual
Amendment 3 to the 1987 version of Notice 731 was issued on 1 October 1990 and it increased
the £250,000 turnover threshold to £300,000 and
the £312,500 tolerance for leaving the scheme to £375,000.