Nearly half of asset managers have said they will not offer discount share classes to platforms as they do not class them as distributors, preferring instead to deal directly with larger advisers.
Comparatively, 75% of platforms still expect to qualify for preferential share classes, according to a report from International Financial Data Services (IFDS) in association with CWC Research.
Asset managers have stipulated that guaranteed volumes of funds are needed in exchange for discount share classes, leading to 40% of the 20 assets managers surveyed ruling out offering them to platforms.
"We will only offer better terms to distributors who can influence the delivery of funds," said one asset manager. "Most platforms cannot influence funds flows, so will not be offered discounts."
CWC Research managing director Clive Waller (pictured) said: "Most asset managers when they talk about advisers they will give discounts to talk about Barclays Wealth, UBS, that level of distributor. What started with platforms has moved to asset managers and we have a total disconnect as they are looking at totally different communities."
What volume will be required to secure a discount remains an unpredictable estimate, with answers from asset managers varying from £25m to in excess of £500m.
Asset managers are also divided on what would constitute appropriate action if the agreed volumes are not then met.
Waller said: "Supposing you agree £100m and you only get £10m? Do you continue the discount or do you take it away? Do you take it away from existing customers or just newcomers?"
One asset manager has already indicated a failure to meet the required fund flows would result in the offer being withdrawn in full, according to the report.
While most advisers expect costs to fall as a consequence of pricing changes, 40% still expect to end up with an increase in costs.
The survey found that just over 30% of advisers would review their selection if offered a 10bps discount.
Standard Life recently claimed it had secured 'super clean' discounts broadly equivalent to existing rebate terms, translating to an average advantage of 9bps.
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