Wealthy investors with pension pots at or near the new £1.5m lifetime limit may wish to cease making further contributions to their own pensions after A-Day in an attempt to avoid the punitive 55 per cent tax charge that kicks in when funds exceed the limit. But there is nothing to stop them tapping into their partner's allowance.

Pensions experts say that the idea of using your own hard-earned cash to top up your spouse's pension has so far been met with some reticence from investors who do not want to relinquish control of their money. But, under the new regime, this could be an efficient way to curb your tax liability and bolster you and your partner's overall retirement savings.