The True Cost of a Bridging Loan: Every Fee Explained

Bridging loans are one of the fastest ways to access property finance. But the headline interest rate you see advertised rarely tells the full story. By the time you factor in arrangement fees, legal costs, valuation bills, and broker charges, the true cost of borrowing can be significantly higher than you expected going in.

This guide breaks down every fee you are likely to encounter, in plain English, so you know exactly what you are paying for before you sign anything.

TL;DR:

• Bridging loans carry multiple cost layers beyond the headline interest rate, including arrangement fees, dual legal costs, valuation fees, and broker charges that can add tens of thousands to the total bill.
• Interest can be structured as rolled-up, retained, or serviced, and the option you choose significantly affects your cash flow during the loan term.
• On a £500,000 loan at 1% per month over 12 months, total costs can reach approximately £84,000, bringing the full repayment figure to around £584,000.
• Always compare the total cost of borrowing across lenders, not just the monthly rate, and keep your exit strategy watertight from day one, as explored in full at KIS Bridging Loans.

What Is a Bridging Loan?

A bridging loan is a short-term, secured loan used to “bridge” a temporary gap between an immediate financial need and a longer-term funding solution. Loans typically run from 1 to 36 months and are secured against property or land. They are commonly used to buy a property at auction, fund a renovation, break a chain, or purchase a home before an existing one has sold. 

Because speed and flexibility are the main draw, there are several important things to consider about bridging loans before committing, and the team at KIS Finance consistently highlights that the total cost of borrowing is considerably more complex than the monthly interest rate alone suggests.

Why the Interest Rate Is Only Part of the Picture

Most lenders quote bridging loan rates as a monthly figure rather than an annual one. That is deliberate: these are short-term loans, typically running between 1 and 24 months, and a monthly rate reflects that reality more cleanly.

Standard rates sit somewhere between 0.39% and 2.0% per month depending on the lender, the property type, and how much you are borrowing relative to what the property is worth. At the lower end of that range the cost feels manageable. But once you layer in all the associated fees, even a competitive rate can produce a surprisingly large total bill.

The golden rule is this: always calculate the total cost of borrowing, not just the monthly interest.

Fee 1: The Lender Arrangement Fee

This is the fee the lender charges for setting up and underwriting your loan. Think of it as their administration and risk assessment charge.

It typically runs between 1% and 3% of the loan amount, with 2% being the most common figure in the market. On a £300,000 loan that means £6,000 before you have paid a penny of interest.

The good news is that most lenders allow you to add this fee to the loan balance rather than pay it upfront in cash. That makes it easier on your day-one finances, though it does mean you are paying interest on the fee amount for the duration of the loan.

Fee 2: Interest Itself, and How It Is Structured

You have three main options for how interest is handled during the loan term, and the one you choose affects your cash flow significantly.

Rolled-up interest means you make no monthly payments at all. Interest accrues throughout the term and is settled in one lump sum when you repay. This suits borrowers who will not have income coming in during the loan period, such as those completing a renovation. The downside is that interest compounds monthly, so the longer the loan runs, the faster the debt grows.

Retained interest works differently. The lender calculates the full interest cost for the expected term upfront and deducts it from what they release to you on day one. You still make no monthly payments, but if you repay early, any unused months of interest get refunded to you. This offers more predictability.

Serviced interest means you pay interest each month, just like a standard interest-only mortgage. This keeps the loan balance from growing but requires you to prove you can afford the monthly payments, so the lender will carry out full affordability checks.

Fee 3: Valuation Fees

Before a lender will approve your loan, they need an independent professional to value the property you are using as security. You pay for this.

Costs vary based on the property’s value and complexity but typically budget around 0.1% of the property value. For most residential properties that lands somewhere between £250 and £1,500. Commercial or unusual properties can cost more.

Some lenders offer a desktop or automated valuation for lower-risk scenarios, which is faster and cheaper. But for most transactions, a physical inspection by a qualified surveyor is required, and there is no way around the cost.

Fee 4: Legal Fees (Yours and the Lender’s)

This is the one that catches first-time borrowers off guard most often. You do not just pay your own solicitor. You also pay the lender’s solicitor.

Your own legal fees will vary depending on the complexity of the transaction and who you instruct. But the lender’s legal costs are usually non-negotiable and tend to start at around £2,500 plus VAT as a baseline for standard commercial or investment transactions. On a simple residential case it may be lower, but you should factor it in regardless.

The lender will typically require you to pay a legal undertaking before their solicitors begin any work. So this cost tends to land early in the process rather than at completion.

Fee 5: Broker Fees

Most borrowers access bridging finance through a specialist broker rather than going directly to a lender. Brokers know the market, have relationships with dozens of lenders, and can often secure better terms than you would find on your own. But their service comes at a cost.

Fee structures vary. Some brokers charge a flat upfront fee of around £1,500 to begin working on your case. Others charge a percentage of the loan, often split across two stages: something like 0.5% when you receive a formal offer and another 0.5% at completion. On a £300,000 loan that works out at £3,000 in broker fees on top of everything else.

Brokers also often receive a portion of the lender’s arrangement fee as a commission, so ask upfront how your broker is being paid so you have a complete picture.

Fee 6: Exit and Redemption Fees

When you repay the loan, some lenders charge an exit fee. This is typically expressed as a percentage of the outstanding balance, usually between 1% and 2%, though it is less common in today’s competitive market than it once was.

More frequently you will encounter a minimum interest period instead. This means that even if you repay early, the lender charges you for a minimum number of months of interest, often between one and six months. It is worth checking this before you commit, especially if your exit could come sooner than expected.

There is also a small redemption administration fee when the lender removes their legal charge from the property title. This is a minor cost, typically around £120, but worth knowing about.

What the Total Can Look Like

To make this concrete, consider a £500,000 bridging loan at 1% per month over 12 months:

Interest at 1% per month for 12 months comes to £60,000. Add a 2% arrangement fee of £10,000. A broker charging a flat £1,500 plus 0.5% at offer and 0.5% at completion adds £6,500. Valuation and legal costs (both sides) add roughly £2,640. A 1% exit fee on the loan adds £5,000.

The total cost of borrowing comes to around £84,140, meaning you would repay approximately £584,140 in total on a £500,000 loan. That is nearly 17% of the original loan amount in costs over 12 months.

That is not a reason to avoid bridging finance. For the right situation it remains an extremely powerful tool. But it is a clear illustration of why understanding every single fee before you proceed is not optional. It is essential.

How to Keep Costs Under Control

A few practical points worth keeping in mind:

Compare the total cost of borrowing across multiple lenders, not just the headline monthly rate. A slightly higher rate with lower fees can sometimes be cheaper overall.

Ask whether the arrangement fee can be added to the loan rather than paid upfront, to protect your working capital.

Clarify the minimum interest period before you sign. If your exit strategy could complete quickly, a lender with no minimum term may serve you better even at a marginally higher rate.

Use a specialist broker. The fee is real, but a good broker can access rates and lenders you cannot reach directly, and the saving often outweighs their cost.

Finally, always confirm your exit strategy is watertight before drawing down. The most expensive bridging loan scenario of all is one that runs over term because the exit was not as straightforward as planned.

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