Bridging Loan Costs
By Mustafa Bilgic · Updated 24 August 2026
A bridging loan's headline interest rate tells you less than half the story. Arrangement fees, valuation charges, legal costs on both sides, and potential exit fees all add up, sometimes pushing the true cost well above what the monthly rate suggests. Plug your figures into our bridging loan calculator to see the full breakdown before you commit to a lender.
Bridging loans are short-term tools with real costs. Model every fee in the calculator before you compare lender quotes.
The Main Cost Components
Bridging loan costs fall into five categories: interest, arrangement fee, valuation, legal fees, and exit fee. Interest is quoted monthly rather than annually -- a rate that looks modest per month compounds into a significant annual equivalent. The arrangement fee, typically a percentage of the loan amount, is often added to the loan itself rather than paid upfront, which means you pay interest on it too.
Valuation fees depend on the property value and the surveyor the lender instructs. You will also pay for the lender's solicitor on top of your own, which doubles the legal bill compared with a standard mortgage. Exit fees apply with some lenders but not all -- always confirm before you sign. Use our bridging loan calculator to model how each component affects the total cost on your specific loan size and term.
How Interest Is Charged
Most bridging lenders quote a monthly rate. There are three common structures: monthly serviced (you pay interest each month), rolled up (interest accumulates and is paid when you repay the loan), and retained (interest for the full term is deducted from the advance on day one). Each structure suits different cash-flow situations.
Rolled-up interest is the most expensive in absolute terms because you pay interest on interest. Retained interest gives you certainty over your monthly outgoings -- zero -- but reduces the net funds you receive at drawdown. Serviced interest keeps the loan balance flat, so the total interest bill is lowest, but you need the monthly cash flow to cover it. Ask your broker to show you the total cost of all three on your loan amount and planned term.
Hidden Costs That Catch Borrowers Out
Overstaying the agreed term is where bridging loans become genuinely expensive. Most lenders charge a penalty rate or default interest once the term expires, and it is significantly higher than the initial rate. If your exit strategy -- selling a property, completing a remortgage, or receiving planning permission -- hits a delay, those extra months erode your profit fast.
Broker fees sit outside the lender's charges and are sometimes a flat fee, sometimes a percentage. Ask whether the broker is paid by the lender or by you. If they take commission from the lender, they may steer you toward products that pay them more rather than ones that cost you less. Getting a second opinion from another broker or running the numbers yourself through our calculator is a sensible safeguard.
When Bridging Makes Financial Sense
Bridging works best when speed matters more than cost, and when you have a clear, time-limited exit. Buying at auction (28-day completion deadline), breaking a property chain, or funding a refurbishment that unlocks a standard mortgage are the most common use cases. In each scenario, the cost of the bridge is offset by a benefit you could not access with slower, cheaper finance.
Where bridging rarely makes sense is when the exit strategy is vague or dependent on a property selling at an optimistic price. If the term overruns, costs spiral. Always stress-test your plan: what happens if the property takes three months longer to sell than expected? If the answer is that you cannot afford the extra interest, the bridge may not be the right tool. This guide is for information only -- speak to your financial adviser or accountant before committing.
Not tax advice -- speak to your accountant.
Frequently asked questions
What is the arrangement fee on a bridging loan?
It is a one-off charge set as a percentage of the total loan amount. It can be paid upfront or added to the loan, though adding it means you pay interest on the fee too, increasing the overall cost.
Can I repay a bridging loan early?
Most bridging lenders allow early repayment without penalty, and some only charge interest for the months you actually use the loan. Check the specific lender's terms, because a minority impose minimum interest periods.
Do I need two sets of solicitors?
Yes. You will need your own solicitor and the lender will instruct theirs. Some lenders allow a single solicitor to act for both parties, which can reduce legal costs, but dual representation is more common.
Is bridging loan interest tax-deductible?
If the bridging loan is used for a rental property or business purpose, the interest may be an allowable expense. For residential buy-to-let, tax relief on finance costs is restricted to the basic rate. Speak to your accountant about your specific situation.