If you have a Joint Investment account the rules are slightly different when determining whether you qualify for the reduced platform charge.
If the Joint Investment account is valued at more than £200,000 then that joint account and any individual accounts held by the joint holders will be moved onto the reduced platform charge.
If the Joint Investment account is valued at less than £200,000 then that account will not qualify for the reduced platform charge. However the value of the Joint Investment account can be added to the value of your individual accounts (i.e. ISA, sole Investment account, Pension) and if the combined value is over £200,000 then your individual accounts will be moved onto the reduced platform charge, but the joint account will remain on the standard charge.
Please don’t hesitate to contact is if you require any clarification of these rules.