Two Mortgages for a Week: When Closing Dates Don't Line Up (2026)
When the purchase closes before the sale, you carry two homes at once. The true cost of a two-week gap, how bridge financing works, and ways to align the dates.
If the purchase closes before the sale, you own two homes for the gap and pay for both: two mortgage payments, two property tax accruals, two insurance policies, and interest on a bridge loan for the down payment you have not received yet. On a $380,000 old mortgage ($1,702 a month) and a $560,000 new one ($3,096), a two-week gap costs roughly $2,400 in payments plus about $450 of bridge interest on $150,000. If the sale closes first, you have cash but nowhere to live, which usually costs less. Either gap is manageable for a week or two and expensive for a season.
Figures come from the CostToClose bridge financing calculator and mortgage payment calculator.
Purchase first: what you pay during the gap
| Item | Daily | 14-day gap |
|---|---|---|
| Old mortgage ($380,000 at 2.5%) | ≈ $56 | ≈ $780 (or the one payment that falls due) |
| New mortgage ($560,000 at 4.49%) | ≈ $102 | ≈ $1,430 |
| Property tax, both homes | ≈ $25 | ≈ $350 |
| Insurance, both homes | ≈ $9 | ≈ $125 |
| Bridge interest on $150,000 at 7.45% | ≈ $31 | ≈ $430 |
| Bridge setup fee | — | $500 |
| Utilities, both | ≈ $10 | ≈ $140 |
| Total | ≈ $233/day | ≈ $3,750 |
Figures computed using the CostToClose calculator, 14 September 2026. Mortgage payments are monthly, so whether one or two full payments land in the gap depends on the dates; the daily accrual is the honest cost.
You must also qualify to carry both. The lender underwrites the new mortgage counting the old payment as a debt unless there is a firm sale, in which case most lenders exclude it. Without a firm sale, many buyers cannot qualify for the purchase at all.
Sale first: what you pay
Temporary housing (family, short-term rental: $100 to $250 a night), moving twice or storage ($300 to $800 a month), and the inconvenience. No bridge, no double payments, and the sale proceeds sit in your lawyer's trust account ready for the purchase. For a gap under a month this is almost always cheaper.
Same-day closing
The ideal on paper: the lawyer sequences the sale funds into the purchase. In practice lawyers prefer at least one day between, because a delay on the sale side (a late wire, a registration problem) pushes the purchase into default. Ask your lawyer before you agree to same-day dates.
Worked example from the calculator
Sale closes 16 September, purchase closes 4 September (purchase first), $150,000 of the down payment coming from the sale:
| Item | Amount |
|---|---|
| Bridge loan interest, 12 days | $367 |
| Bridge fee | $500 |
| Double carrying, 12 days at ≈ $202/day (excluding bridge) | ≈ $2,420 |
| Cost of the gap | ≈ $3,290 |
Reversing the order (sale first, 12 nights in a short-term rental at $180) costs about $2,160 plus one extra move. Reproduce the bridge figure.
Writing offers to limit the gap
- Make the purchase conditional on the sale of your home (a "SOP" clause), or at least on a firm sale by a date. Sellers dislike it, but in a balanced market it is accepted.
- Negotiate the purchase closing to fall after the sale closing, even by two days.
- If you must close the purchase first, arrange the bridge and the lender's consent before removing conditions.
- Port the mortgage to avoid the penalty and keep one lender in the loop on both dates. See Porting your mortgage.
Frequently asked questions
What happens if my new house closes before my old one sells?
You carry both properties for the gap and usually need a bridge loan for the down payment coming from the sale. Expect roughly $200 to $250 a day in combined costs on typical mortgages.
Can I qualify for two mortgages at once?
If the sale is firm, most lenders exclude the old payment. Without a firm sale, you must qualify carrying both, which is often impossible.
Is it better to buy first or sell first?
Sell first is cheaper and safer; buy first gives certainty on the new home. A gap of a few days with bridge financing is a reasonable compromise.
Can both closings be on the same day?
Yes, but lawyers prefer a day or two between so a delay on the sale does not put the purchase in default.
How much does a two-week overlap cost?
On a $380,000 and $560,000 mortgage pair with a $150,000 bridge, about $3,600 including the bridge fee.
Sources
- Financial Consumer Agency of Canada, buying and selling at the same time — checked 14 Sept 2026
- Bank of Canada, prime rate — checked 14 Sept 2026
- Law Society of Ontario, closing sequencing guidance — checked 14 Sept 2026
This guide gives general information for Canadian home buyers and sellers, checked against the sources listed above on the date shown. It is not legal, tax, or mortgage advice. Because rules and rates change, confirm current figures with your lawyer or notary, your lender, or the government office that administers the tax before relying on them.