Bridge Financing Calculator

What the Bridge Financing Calculator does

This calculator answers the question everyone with mismatched closing dates actually has: how much does bridge financing cost. It sizes the loan against your net sale proceeds, applies simple daily interest — the way bridge loans are actually charged, not an amortized mortgage payment — and adds the flat fees a lender charges to set one up.

It also puts the single biggest disqualifier front and centre. Bridge financing requires a firm, unconditional sale agreement on your current home. A conditional offer does not qualify at most lenders, and this calculator flags that clearly rather than letting you plan around a number you cannot actually get.

• The bridge amount needed, capped by your actual net sale proceeds
• Total interest cost using simple daily interest, not an amortized payment
• Admin and legal fees on top of interest
• Cost per day — useful the moment a closing date shifts
• A clear flag on the firm-sale requirement, and what to do if you don't have one yet

The key variables that move the answer — and how lenders treat them

Bridge loans are short and simple by design, and two variables do almost all the work in what one actually costs.

• Number of days — this is the dominant variable, not the rate. A bridge loan is typically outstanding for a matter of weeks, so even a rate a couple of points higher than a mortgage translates into a modest dollar cost when it only applies for 30 or 45 days.
• Net sale proceeds — a lender will only bridge against equity that is firmly under contract to be realised. Your sale price minus your existing mortgage balance minus selling costs sets a hard ceiling on the bridge amount, regardless of how much you need for your purchase.
• Whether the sale is firm — this is not a pricing variable, it is a qualification gate. A conditional sale — subject to financing, inspection, or anything else — generally cannot be bridged against, because the lender has no certainty the funds will actually arrive.

How bridge financing is actually calculated in Canada

Bridge loans use simple daily interest, not an amortized mortgage formula. There is no periodic compounding and no payment schedule to build — the loan is drawn once, sits for a fixed number of days, and is repaid in full the moment your sale closes.

The calculation is a single formula: interest = bridge amount × annual rate × (number of days ÷ 365). Nothing here compounds, because the loan's life is measured in weeks, not years — applying a mortgage-style compounding formula to a bridge loan would materially overstate the real cost.

• Bridge amount: min(down payment needed, sale price − mortgage balance − selling costs)
• Interest: bridge amount × rate × (days ÷ 365)
• Total cost: interest + admin fee + legal fee
• Cost per day: bridge amount × rate ÷ 365

What you get from this calculator, and how lenders use these numbers

Every figure here maps directly to what a lender checks before approving a bridge loan on your file.

• Bridge amount — the lender will not advance more than your net sale proceeds support, since that is the collateral the loan is secured against.
• Total interest cost — almost always far smaller in dollar terms than people fear going in, because the loan is short-lived even at a higher rate.
• Firm sale requirement — the number one reason a bridge application gets declined. Confirming this before you apply saves time and avoids a scramble close to your closing date.
• Cost per day — the number that lets you instantly cost out a date change when a buyer or seller asks to move a closing by a week.

Using your results well

If your sale is firm and your net proceeds cover your down payment need, bridge financing is usually the most straightforward, lowest-cost way to handle mismatched closing dates — most people are relieved by how small the actual dollar cost turns out to be once they see it laid out.

If you do not yet have a firm sale, or your net proceeds fall short of what you need, this calculator flags it rather than showing you a number you cannot rely on. A private or second mortgage is the usual fallback in that situation, at a materially higher cost, and is worth checking against the private mortgage calculator before you commit to a closing date that assumes bridge financing will be available.

• Confirm your sale is firm before assuming a bridge is available
• Use the cost-per-day figure whenever a closing date is being negotiated
• Check your net sale proceeds cover what you actually need to close
• If you cannot get a firm sale in time, look at the private mortgage alternative before your purchase closing arrives

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