Closing Costs When Selling a House in Ontario
HOMEH Publishing Department
Author Jul 03, 2023 5 min read

Buyers worry about land transfer tax. Sellers have a different set of closing costs — and they can be far larger, because the biggest one is real estate commission. Between commission, legal fees, and a possible mortgage penalty, an Ontario seller can hand over tens of thousands of dollars before they ever see their net proceeds. Here's the full list, what's negotiable, and how to keep more of your equity.
- Commission is the largest selling cost — traditionally around 5% of the sale price, plus HST.
- Legal fees for a sale run roughly $1,100–$2,500, similar to a purchase.
- Breaking your mortgage early can trigger a penalty — sometimes thousands of dollars.
- HOMEH lists for a 1% listing fee instead of the traditional ~2.5% listing side.
- Your net proceeds = sale price minus mortgage balance, commission, legal fees and any penalty.
Selling costs vs buying costs
When you buy, the dominant cost is land transfer tax. When you sell, you don't pay land transfer tax at all — but you do pay commission, and that's usually the single biggest line item of the entire transaction. The cost structure flips completely. (For the buyer's side, see our closing-costs breakdown.)
Real estate commission: the big one
Traditional total commission in Ontario is around 5% of the sale price, plus HST. It's usually split between the listing side (about 2.5%) and the co-operating buyer's agent (about 2.5%). On a $1,000,000 sale, that's roughly $50,000 before tax — more than enough to make commission the cost worth scrutinizing.
Commission is the one selling cost you have real control over. Compare scenarios with the commission calculator before you sign a listing agreement.
The other selling costs
Beyond commission, budget for these:
| Cost | Typical amount | Notes |
|---|---|---|
| Real estate commission | ~5% + HST (traditional) | Largest cost; negotiable |
| Legal fees | $1,100 – $2,500 | Discharge of mortgage, closing paperwork |
| Mortgage discharge / penalty | Varies | If you break the mortgage early |
| Staging & prep | Varies | Optional, but can boost the sale price |
| Moving costs | Varies | Don't forget to budget for the move |
You'll still need a real estate lawyer to close the sale and discharge your existing mortgage.
Watch out for the mortgage penalty
If you sell before your mortgage term ends and don't port it to a new home, your lender may charge a prepayment penalty. On a fixed-rate mortgage this is often the greater of three months' interest or an 'interest rate differential' (IRD) — which can run into the thousands. Always ask your lender for the exact figure before you list.
What you actually walk away with
Your net proceeds are what's left after the costs come out: sale price, minus your remaining mortgage balance, minus commission, legal fees and any penalty. Estimate yours with the selling cost calculator so there are no surprises on closing day.
Frequently asked questions
Do sellers pay land transfer tax in Ontario?
How much is commission when selling a house in Ontario?
What is a mortgage prepayment penalty?
How do I calculate my net proceeds from selling?
Can I reduce my selling costs?
Ready to put this into action?
Get pre-qualified in five minutes, or talk to a HOMEH advisor — no credit pull, no commitment.
Keep reading.

Closing Costs
7 Closing Cost Mistakes to Avoid

Closing Costs
Closing Costs for Condos vs Houses

Closing Costs
