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myHSA advises against setting up an HSA for sole proprietors. The rules for a sole proprietor work differently than for those owning an incorporated and having T4 income. Because myHSA does not know all different rules surrounding sole proprietors the onus falls on the advisor to ensure any sole proprietors brought onto the system are following the rules set forth by the CRA.
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Here is a release from the CRA that you can reference when making the decision about setting up an HSA for a Sole Proprietor:
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