HMRC research has shown that the wealthy do not pay more as a result of the relief – I have not got time to find it again, but could.
Charitable giving and Gift Aid behaviour amongst better-off individuals
Qualitative research into why people donate, and the use of tax reliefs amongst individuals earning over £100,000 pa
Tax relief in itself did not motivate the decision to give, but did seem to incentivise participants to give more generously as they knew that they would be receiving relief at the end of the year. However, participants were not always clear exactly how much they would get back and some were unclear on the details of Gift Aid. Participants found the current system for claiming relief easy to navigate and thought it fair for both the charity and the donor to receive tax relief. Participants felt that without the incentive of tax relief, they might reduce their charitable donations disproportionately to the amount that they would have received in tax relief.
Oh, right. HMRC found exactly the opposite of what Snippa claims they found.
Thanks to spotter Mr. Murphy (S).