Because the difference is the portion of the annual management charge that can be used to purchase further units. If, for example, the AMCs on the capital and accumulation units were 5% and 1% respectively, and we assume that 1% is enough to cover fund management and renewal expenses on the policy, then we have an extra 4% each year which we do not need.
So we take advance credit for that 4% to reduce our unit reserves. When the charges actually accrue, we use them to buy unit instead. So every year, we can buy an extra 4% units using this charge. So it is like an interest rate, except that we are thinking in terms of number of units rather than in terms of the pound (or dollar or rand) value of the units.
Last edited by a moderator: Apr 16, 2009