Self-assessment
Commons · Question 75521 · Tabled 5 Sep 2025 · Treasury · Official record
Answered 15 Sep 2025
Question
Asked by Helen Morgan
To ask the Chancellor of the Exchequer, how many and what proportion of tax calculations made through HMRC's Simple Assessment procedure were subsequently found to be incorrect in each of the last five years.
Answer
Answered by Dan Tomlinson, 15 Sep 2025
Simple Assessments are based on data from customers and third parties, such as employers, pension providers, Department for Work and Pensions and financial institutions. If any of this data is incorrect, customers can raise a query by identifying the erro...