UK millionaires should face opt-out tax surcharge, letter argues

A recent report found that three-quarters of UK millionaires say they would pay more tax, a politically significant finding as Labour faces pressure to fund public services and defend progressive policies amid rising anti-tax populism, according to a letter in The Guardian. However, the key question is how to convert stated willingness into actual revenue.

The Treasury notes that wealthy individuals can already make voluntary payments to HMRC, but the sums raised are negligible. Behavioral research shows opt-in systems produce far lower participation than opt-out systems, a principle used in pension auto-enrolment and organ donation.

James Kyle of Ealing, London, said he suggested to the Treasury via his MP an “opt-out solidarity tax surcharge” for those above the highest income or wealth thresholds. The Treasury replied with the same response about existing voluntary payments, missing the key behavioral point that participation rises sharply when contribution is the default.

Critics may note participation would remain technically voluntary, but existing taxes would stay compulsory and progressive. The surcharge would apply automatically unless individuals confidentially opted out in their tax returns. The comparison is between securing additional contributions from many wealthy individuals or securing nothing while increasing incentives for avoidance, relocation and political backlash.

Kyle believes that in politically challenging times, ideas combining behavioral realism with fiscal pragmatism deserve closer consideration.

Readers are invited to email letters for publication in the Guardian’s letters section.