If you pay your ASCL membership yourself, 100% of your subscription is allowable against income tax. This applies from the 2020/21 tax year. You can claim this back on your tax return or, if you don't submit a return, by contacting HM Revenue and Customs. You can find out more by visiting
www.hmrc.gov.uk/incometax/relief-subs. You will find ASCL listed under the approved organisations as
'School and College Leaders, Association of'.
You may be able to claim for subscriptions going back a number of years. The HMRC website above tells you how. Please note that until the 2020/21 tax year, only 85% was allowable.