Mortgage Options for HST/GST Debt

Owing the CRA for HST/GST is a different kind of tax debt from personal income tax, and it’s worth understanding why before you finance it. HST/GST is money you collected on the government’s behalf from your customers — so CRA treats unremitted amounts especially seriously, with a deemed-trust priority that can rank ahead of your mortgage. That makes an HST/GST balance more time-sensitive than a typical income-tax arrears.

The good news is that the financing solution is the same one that works for any CRA debt: an equity-based refinance that pays the balance out and clears your title. This guide covers what makes HST/GST debt distinct and how a mortgage clears it. For the service, see our CRA debt mortgage page. General information, not legal or tax advice — confirm with a tax lawyer or CPA.

When you charge a customer HST/GST, you’re collecting a tax that belongs to the Crown — you’re effectively holding it in trust until you remit it. If you don’t remit, CRA can assert a deemed trust over your assets for the unremitted amount, and that claim can take priority ahead of a secured lender. Payroll source deductions work the same way and are treated as the most serious of all.

The practical consequence: CRA tends to move faster and harder on unremitted HST/GST and payroll than on personal income tax, and lenders are especially wary of these claims. So if your CRA balance is HST/GST (or payroll), treat the timeline as shorter than you might for income tax, and prioritize clearing it. The exact legal scope of the deemed trust is a matter for your tax lawyer — but the direction is clear: don’t let it sit.

HST/GST arrears almost always belong to the self-employed and small-business owners — sole proprietors, incorporated contractors, consultants, trades, and owner-operators. The pattern is familiar: a strong revenue year, HST collected on invoices, and then the remittance gets deferred to cover cash-flow gaps until it compounds into a balance that’s hard to clear from operating income.

Because these are the same borrowers whose income doesn’t show cleanly on a T4, they face a double challenge — the HST/GST debt and business-for-self income — that a bank branch isn’t built for. The lenders who solve HST/GST debt are the same ones who understand self-employed income, which is exactly why a broker who works both is valuable here. See our self-employed mortgage and self-employed CRA debt pages.

The mechanism is the same equity-based refinance used for any CRA balance. New financing is sized to cover your existing mortgage, the HST/GST payout, and costs. At closing the funds flow through your lawyer’s trust directly to CRA, which issues a clearance certificate, and the balance is settled — converting a fast-compounding, high-priority tax liability into ordinary amortized mortgage debt.

Which lender depends on your title and file: before a lien, an A- or B-lender refinance where you qualify; after a lien, a B-lender or private lender that clears it at closing. Because HST/GST carries deemed-trust risk, coordinating the payout correctly with your lawyer matters — the goal is a clean clearance certificate confirming CRA is fully paid.

Pricing follows the usual ladder: cheapest at an A-lender before a lien, a modest premium at a B-lender, and higher (but fastest) on a private file — illustratively, CMHC put the private single-family average at about 9.6% in Q3 2025, plus fees. Against CRA’s daily-compounding interest and the deemed-trust enforcement risk, clearing the balance is usually the cheaper path by a wide margin.

Often you can consolidate at the same time. If you also carry personal income-tax arrears, corporate tax, credit cards, or a line of credit, these can frequently be folded into the same refinance, replacing several obligations with one mortgage payment. We model the blended cost so you see the real number before committing, and disclose every fee in writing.

Pull your CRA HST/GST program-account statement so you know the exact balance and periods, confirm whether anything is registered against your title, and gather your business income documents. Then map the cheapest pathway that fits your timeline — and because HST/GST is time-sensitive, sooner is better.

Mortgage Squad Advisors (FSRA #13737) arranges refinances to clear HST/GST and other CRA debt, works with self-employed income, and coordinates the payout with your lawyer and CPA. Start on our CRA debt mortgage page, or get a confidential assessment — no credit pull to begin. General information only; confirm tax and legal specifics with a licensed professional.