Bridge loan interest calculator
Estimate short-term bridge-loan interest carry and upfront fee drag.
What this calculator covers
Use this bridge loan interest calculator to estimate how much a short-term bridge balance may cost in monthly interest and upfront origination fees before the property sells or long-term financing replaces it.
The walkthrough keeps the monthly carry, total interest, and total hold-period cost visible together so the temporary-financing tradeoff is clearer before a lender conversation.
Frequently asked questions
- What is a bridge loan typically used for?
- A bridge loan provides short-term financing to cover the gap between buying a new property and selling an existing one, or between construction completion and permanent mortgage funding. The loan is intended to be paid off quickly — often within six to twelve months — rather than amortized over decades.
- Why are bridge loan rates higher than regular mortgage rates?
- Bridge loans carry higher rates because they are shorter-term, riskier for the lender (the repayment depends on a future sale or refinance event), and typically require less documentation than a conventional mortgage. The origination fee adds further upfront cost on top of the interest carry.
- Does the calculator include principal paydown?
- No. It models the loan as interest-only during the hold period, which is how most bridge loans are structured. The full balance is typically repaid in a lump sum when the property sells or permanent financing closes, not amortized month by month.
- How does holding the loan longer affect total cost?
- Total interest scales directly with the number of months held. Extending a bridge loan by even two or three months can add thousands of dollars in carry, which is why knowing the realistic hold period before you borrow is an important part of the cost estimate.
Tool
Run the calculation
Result
RESULT · BRIDGE COST
â„–056
Primary result
$15,187.50
A $180,000.00 bridge loan at 9.25% held for 9 months carries about $12,487.50 of interest plus $2,700.00 of upfront fees, for an estimated total carrying cost of $15,187.50.
- Monthly interest payment
- $1,387.50
- Total interest cost
- $12,487.50
- Origination fee amount
- $2,700.00
- Total carrying cost
- $15,187.50
Step-by-step solution
- 1.Estimate the monthly interest-only carry from the bridge-loan balance and rate to get $1,387.50 per month.
- 2.Multiply that monthly carry across 9 months to estimate $12,487.50 of total interest.
- 3.Add the origination fee estimate of $2,700.00 to reach $15,187.50 of total bridge-loan carrying cost.
Walkthrough
Visual walkthrough
Bridge loans are often evaluated as short holding-cost tools, so the core question is how much interest and fee carry accumulates before the property sells or permanent financing replaces the loan.
01
Estimate the monthly interest-only carry
$180,000.00 × 9.25% ÷ 12 = $1,387.50
This keeps the bridge loan in an interest-only frame rather than a long amortizing one.
$1,387.50 per month
02
Project the hold-period interest
The longer the bridge loan stays open, the more interest carry accumulates before payoff.
$12,487.50 total interest
03
Add the upfront fee drag
Origination points and similar upfront fees materially change the true short-term cost of bridge financing.
$15,187.50 carrying cost