By Elliot Gulliver-Needham The inheritance tax break for AIM has been partially abolished in the Budget, as only a 50 per cent relief from inheritance tax will be applied to its shares, setting the effective tax rate at 20 per cent. The move came from Chancellor Rachel Reeves today as part of a host of inheritance tax measures meant to raise as much as £2bn. Rumours had swept the City that AIM’s business rate, which allows stocks to be inherited without being taxed if held for more than two years, would be scrapped to raise around £1.4bn. Investment bank Peel Hunt calculated that if full scrap…