Sesame is to raise its standard fixed fee for the second time in a year following a "multi-million pound" technology investment.
The news follows a 51% price hike in August due to increased regulatory costs, from £29.20 per week per adviser to £44.20.
Speaking at the firm's annual conference, CEO George Higginson (pictured) said IRESS's XPLAN practice management system, currently on trial with about 250 members, would be an essential part of advisers' post-Retail Distribution Review (RDR) proposition.
It will allow paperless processing to members of the UK's largest network for about £80 per month, though the precise cost to individual firms is currently unknown.
"We are being upfront to say there will be an increase in the standard fixed fee," Higginson said.
"We are giving lots of advanced notice: we won't be making any changes to our prices until August.
"I fundamentally hate the fact that half the people in my position say it doesn't cost anything to run a company. You will not be able to run a business without [these] systems, because you won't be able to prove adviser charging.
"I can assure you because of our buying power the net cost will be cheaper than if you had to buy the system itself. It will make it easier for you to do adviser charging, and document [properly].
"This is an area the regulator will increasingly focus on. You need to offer a quality service that justifies adviser charging."
Earlier, Sesame chairman Ivan Martin dismissed industry claims that the network model was doomed to failure as "a load of rubbish".
The term had been reinvented by the firm, he said, by moving from a traditional model to a vertically integrated structure, that includes the Optimum asset management business and the Sesame One platform.
All but 17 of Sesame's advisers had passed the QCF 4 qualification, he added.
‘Important to have an anchor’
Lack of innovation for solutions
Some 2,000 consumers affected
Achievements, charity work and other happy snippets