The structural difference
A refinance replaces your existing mortgage with a bigger one and hands you the difference in cash. A HELOC sits beside your mortgage as a revolving line you can draw from and repay as you like. One is a lump sum on a fixed schedule, the other is a standing credit facility against your home.
When a HELOC fits
A HELOC suits costs that arrive in stages or might not arrive at all: a renovation billed in phases, an investment down payment you want ready but not deployed, or an emergency reserve. You pay interest only on what you draw. The risk is behavioural: a large available balance quietly becomes spending money for a lot of households.
- Staged or uncertain costs, like phased renovations
- Interest only on the drawn balance
- Requires discipline, the limit does not shrink on its own
When a refinance fits
A refinance suits a defined one-time need: consolidating credit card debt, funding a buyout, paying for a specific project. You get a fixed amount at a fixed or variable mortgage rate, usually well below HELOC pricing, and the forced repayment schedule means the balance actually disappears on a timeline.
The qualification difference
Refinancing is capped at eighty percent of your home's value, minus what you owe. A HELOC is capped at sixty-five percent on its own, or eighty percent combined with the mortgage. Lenders also stress-test the full HELOC limit even if you never draw it, which can reduce what you qualify for on your next purchase.
The hybrid answer
Readvanceable mortgages combine both: a mortgage portion that shrinks as you pay it down, and a credit line that grows by the same amount. For investors using the Smith Manoeuvre or homeowners who want both structure and flexibility, the hybrid is often the cleanest setup, and it costs nothing extra to arrange at the start.
Frequently asked questions
- Is HELOC interest tax deductible?
- Only when the borrowed funds are used to earn income, such as investments or a rental property. Interest on funds used for personal spending is not deductible.
- Can I have both a HELOC and a refinanced mortgage?
- Yes, that is exactly what a readvanceable mortgage is. Many lenders also allow a standalone HELOC behind a first mortgage.
- Which is faster to set up?
- Similar timelines, typically two to four weeks with an appraisal and legal work. An existing HELOC can often be increased faster than arranging a new one.