This form constitutes a Gift Aid declaration. Gift Aid is reclaimed by the charity from the tax you pay for the current tax year. Your address is needed to identify you as a current UK taxpayer. Rethink Charity operates in the UK through Effective Altruism UK, registered in England and Wales under Registered Charity Number 1170614. Scottish and Northern Irish taxpayers can also claim Gift Aid.
If you pay Income Tax at the higher or additional rate and want to receive the additional tax relief due to you, you must include all your Gift Aid donations on your Self-Assessment tax return or ask HM Revenue and Customs to adjust your tax code.