Generally speaking, glasses cannot be claimed as an allowable business expense. HM Revenue & Customs rules state that they will only allow expenses that are deemed to be wholly and exclusively for the business and necessarily incurred in the performance of your duties.owever, if a prescription is required for glasses that are solely to be used for business purposes and evidence can be provided that they are not used elsewhere, then the purchase of glasses can be justified as an allowable business expense. The Expert was Mark Denton, an accountant at inniAccounts.
That could make defending the nation and paying the government's bills even tougher to do in the future. [PHOTOS: The 10th Anniversary of the Iraq War] The Iraq and Afghanistan wars will together cost $4 to $6 trillion, according a new study from Harvard University's Kennedy School.
Cost To: 1  Every hour, taxpayers in the United States are paying. $615,482 for Cost of Military Action Against ISIS. 2  Every hour, taxpayers in the United States are paying. $3.42 million for Cost of Pentagon Slush Fund. 3  Every hour, taxpayers in the United States are paying. $4 million for Cost of War in Afghanistan.