HMRC does not estimate the total costs incurred by individuals in administering tax.18 We therefore asked HMRC why it gave less attention to individuals’ costs than businesses. It said it focused on individuals’ wider customer experience, including the time they take to administer tax and the ease of dealing with tax issues, using metrics such as customer satisfaction.19 We also asked HMRC why the rate it uses to estimate the cost of customer time is three years out of date. HMRC said that following a recommendation in the C&AG’s report, it is “committed to looking at the feasibility of coming up with a measure” for the costs incurred by individuals in administering their tax.20