No. ISAs must be linked under the ISA Family Account, while GIAs remain under the standard Family Account. Separate logins are required for each structure.
Can I link my family’s ISAs and GIAs under one Family Account?
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How do I create an ISA Family Account?
Why can I not link an ISA to my existing Family Account?
Can I invite my family member to open an ISA account directly from the Family Account portal?
Why do two separate structures exist (ISA vs GIA)?