HM Revenue And Customs Decision Makers Guide

The HM Customs and Revenue "Decision Makers Guide" is a website designed for their employees. It offers them guidance on applying tax rules and calculating notional earnings.

This Word document contains several short excerpts from the HMRC Decision Makers Guide which focus on volunteering and expenses :

HM Revenue & Customs Guidance MS Word

If you want to look through the entire guide, you can view it on the HMRC website