Bridging Loan Calculator

What bridging loans actually are

A bridging loan is short-term financing — typically 6-24 months — designed to "bridge" the gap when buying a new property before selling your existing one. Without bridging, you'd have to either sell first and risk not finding a new home in time, or sell after buying and carry two mortgages simultaneously. Bridging solves this by lending you the gap amount until the existing property sells.

The structure: you take out a short-term loan secured against either the new property, the old one, or both. During the bridge period you pay interest only (no principal). When the existing property sells, you use the proceeds to repay the bridging loan in full. Total time exposure is usually 6-12 months for residential buyers, longer for commercial property and development scenarios.

Bridging loans are common in the UK, Australia, and New Zealand where property chains are normal. Less common in the US, where buyers more often use HELOCs or cash-out refinances on the existing property to fund the gap. Commercial bridging is universal across all markets for time-sensitive acquisitions and development financing.

Closed vs open bridging

Closed bridging (lower risk, lower rate)

You have a confirmed sale of the existing property — exchange of contracts or equivalent firm commitment with a known completion date. The lender knows when and approximately how much the exit funds will be. Rates are lower (8-10% typical in current markets), terms are usually shorter (3-6 months), and approval is straightforward.

Best for: homebuyers in a chain where the sale is already locked in but completion timing creates a brief gap. Maximum lender protection means cheapest rates.

Open bridging (higher risk, higher rate)

No confirmed buyer for the existing property yet. The lender is taking real risk that the property may take longer to sell or sell for less than expected. Rates are higher (10-15%+), terms can be longer (12+ months), and the lender will typically require a clear exit plan and possibly higher collateral.

Best for: buyers who need to move on a new property quickly but haven't found a buyer for their existing one yet. The "I need to act now" use case. Cost is higher, but it preserves the ability to capture a fast-moving deal.

When bridging makes sense

You found the perfect property and can't wait

The classic use case. Your dream home comes onto the market with multiple offers expected. Selling first and then searching would cost you weeks or months. Bridging lets you move now and resolve the existing property afterward. The bridging cost (often $20-50K total) is small relative to the value of capturing the right property at the right price.

You need to avoid a renting gap

Selling first means you typically need to rent for months while searching for the new home. Rental costs ($2-4K/month) plus moving twice can add up to similar amounts as bridging financing without the equity exposure. Bridging avoids the dislocation and double-move.

Auction purchase

Property auctions require completion typically within 28 days — far too short for a standard mortgage application. Bridging provides the speed (often approved and funded within 1-2 weeks) needed to complete the auction purchase, then refinances into a standard mortgage afterward.

Renovation before sale

Buying a property that needs work before it can be mortgaged conventionally. Bridging covers the purchase + initial renovation. Once the property is rentable or refinanceable, switch to a permanent mortgage.

Investment property speed

Capturing investment property deals when sellers want quick close. The 6-month delay of normal mortgage processing can lose deals to cash buyers. Bridging matches the speed of cash without requiring cash.

The risks of bridging loans

Property doesn't sell in time

The #1 bridging risk. If the existing property doesn't sell within the bridge period, you face options: extend the bridge (higher costs), refinance into a longer-term loan (may require lower LTV), reduce the property price to force a sale (you lose equity), or default and risk repossession. In falling markets, this risk concentrates badly — bridge financiers and homeowners both feel the pressure simultaneously.

Property sells for less than expected

If the existing property sells for $50K less than the lender expected, you may need to come up with that $50K from other sources to repay the full bridging loan. Plan for this scenario in advance: have a cash buffer or backup financing arranged.

Rate sensitivity

Bridging rates are higher than standard mortgages because of the risk and short duration. A 12% APR on a $400K bridge equals $48K/year — versus maybe $24K on a standard 6% mortgage. The premium adds up fast.

Setup and exit fees

Most bridging loans charge 1-3% setup fee at the start, sometimes a similar exit fee at repayment. On $400K, this is $8-24K of pure fees beyond the interest. Always factor in.

Compounded with chain failure

If your buyer pulls out late in the process, your bridge timeline extends and costs multiply. Property chains in the UK and AU are particularly vulnerable to this. Mitigation: only bridge when you have strong confidence in the existing property sale outcome.

Bridging Loan Calculator FAQ

How quickly can I get a bridging loan approved?

Bridging is faster than standard mortgages — typical timeline is 1-3 weeks for residential, sometimes as fast as 5-7 working days for time-sensitive cases. Some specialist bridging lenders advertise 48-hour decisions. Speed comes at higher cost; if you have a month, you may negotiate better rates.

What LTV can I get on a bridging loan?

Typically up to 70-75% of the new property value (sometimes higher with strong borrower credentials). On a $500K new home, you'd get approximately $350-375K bridge maximum. You bring the rest from existing equity or savings. Investment property bridges may go up to 80%; commercial sometimes higher with proper underwriting.

Is the bridging interest tax-deductible?

Generally not for owner-occupied home bridges (UK, AU, US, CA all treat owner-occupied mortgage interest similarly). For investment property bridging, interest is typically deductible against rental income — same as standard investment loan interest. Always confirm with a tax adviser for your specific situation.

Can I pay the interest monthly or have it roll up?

Most lenders offer both options. Monthly payment is cheaper overall (no compounding on accrued interest) but requires monthly cash flow. "Rolled up" (or "retained") interest accrues and is repaid at the end with the principal — convenient but more expensive. The calculator shows monthly-payment math; if you choose rolled-up, expect roughly 5-10% higher total cost.

What if my buyer pulls out?

Three options. Get a new buyer quickly (may require price reduction). Extend the bridge with your existing lender (typically requires repaying setup fees again). Refinance into a longer-term loan against the new property (must qualify on income). Worst case: forced sale of the new property at a loss. Having backup plans matters.

Can I bridge against a property I'm not selling?

Yes — these are "second charge" bridges where the existing property remains owned but is collateralized for the bridge. Useful for investors expanding portfolios. Higher rates typically (12-18%) because the exit isn't a property sale but a refinance against ongoing assets.