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Should you use your TFSA to buy a home, or leave it invested and use a different strategy?

In this episode of the Plain English Finance Podcast, Tré and Sierra work through a real planning puzzle: someone wants to buy a home, has money in both a non-registered investment account and a TFSA, and needs to decide whether using the TFSA creates a better long-term outcome. The answer depends on tax deductibility, investment returns, taxable income, how quickly the TFSA can be replenished, and whether the borrowed money is actually used to invest.

The key issue is that mortgage interest on a personal home is normally paid with after-tax dollars, whereas interest on money borrowed for investment may be deductible if certain conditions are met. In this case, using the TFSA helped pay off the home purchase fully, then allowed a larger investment loan to be created in a non-registered account. That created a larger potential interest deduction, but it also meant temporarily giving up tax-free TFSA growth.

In this episode, we discuss:

• Whether it makes sense to use a TFSA for a home purchase
• Why mortgage interest for a personal home is different from investment-loan interest
• Why the paper trail matters when borrowing to invest
• Why borrowed money cannot be used inside a TFSA or RRSP for this strategy
• The trade-off between tax-free TFSA growth and deductible investment-loan interest
• Why taxable income and tax bracket matter
• Why investment allocation and risk tolerance matter
• Why tax drag matters in non-registered accounts
• Why active management can change the tax result
• How quickly replenishing the TFSA can change the answer
• Why the result may flip depending on market returns
• Why this kind of decision needs actual planning, not rules of thumb

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