Bridging Loan Interest: Rolled Up, Retained or Serviced
Bridging lenders let borrowers choose how interest is paid: rolled up and added to the balance, retained upfront from the loan, or serviced monthly like a normal repayment. The choice affects cash flow, the amount released at completion, and the total cost. This guide explains each option for UK limited companies, LLPs and partnerships of 4+.
What does the interest payment method actually control
The interest payment method controls when and how monthly interest is settled during a bridging loan term, not the interest rate itself. Most UK bridging lenders quote a monthly rate, typically between 0.55% and 1.25%, and then offer a choice of three ways to handle that cost over the term.
The method chosen changes how much cash is available at completion and how much monthly outgoings the borrowing company carries during the loan. It has no effect on the underlying property or asset security requirements, which stay the same regardless of which option is picked.
Rolled-up interest: how it works
Rolled-up interest means monthly interest is added to the loan balance each month rather than paid out, so nothing is due until the loan redeems and the whole amount, capital plus compounded interest, is settled in one sum. This is the most common choice for refurbishment or development bridges where the company has no spare monthly income during the works.
Because interest compounds on interest, the total cost over a long term is higher than retained or serviced interest at the same rate. Lenders still check the exit route carefully, since the debt grows every month until redemption, usually via sale or refinance onto a term facility.
Retained interest: how it works
Retained interest means the lender deducts the full term's interest from the gross loan amount at completion and holds it in a reserve, so the borrower receives a net advance and makes no monthly payments at all. This suits companies that want certainty over the total cost and no monthly servicing obligation whatsoever.
The trade-off is a smaller day-one release of funds, since the retained amount is subtracted before drawdown. If the loan redeems early, most lenders rebate unused retained interest, though some apply a minimum term charge, so the exact rebate policy is worth checking on the facility letter before signing.
Serviced interest: how it works
Serviced interest means the borrowing company pays the monthly interest amount directly from its own income each month, similar to a standard commercial loan, leaving the full gross amount available at completion. This is typically the cheapest option overall because there is no compounding and no upfront deduction.
Lenders offering serviced interest require proof the company can afford the monthly payment from trading income or rental receipts, so this route is generally reserved for borrowers with demonstrable cash flow rather than companies bridging into a development with no interim income.
Which option suits which borrower
The right option depends on whether the company has spare monthly income and how much day-one cash it needs released. A refurbishment project with no rental income during the works usually needs rolled-up or retained interest, since there is nothing to service the debt from until the property lets or sells.
A company bridging a cash flow gap while an existing asset sells, with ongoing trading income in the meantime, can often service interest monthly and keep the total cost down. Partnerships and LLPs with multiple income streams sometimes split the difference, servicing part and rolling up the rest by agreement with the lender.
How lenders assess affordability differently for each option
Lenders assess serviced interest against monthly income and existing debt commitments, much like an ongoing loan, while rolled-up and retained interest are assessed mainly against the exit strategy and the loan-to-value at redemption. This means a company with weak monthly cash flow but a strong, evidenced exit can often still qualify for rolled-up terms.
Rate itself can also differ slightly between methods; some lenders price serviced facilities marginally lower because monthly payments reduce their risk exposure, while rolled-up facilities sometimes carry a small premium to reflect the compounding balance and reduced monthly contact with the borrower's finances.
Eligibility for bridging through FundBiz
FundBiz introduces bridging finance only for limited companies, LLPs and partnerships of four or more, which keeps applications outside FCA regulated mortgage contract rules that apply to individual and small partnership borrowers. Sole traders and partnerships of fewer than four are outside scope and are not matched to the panel.
Within that scope, the panel covers regulated and unregulated bridging depending on the security property's use, and lenders on the panel offer all three interest payment methods, so the right structure is matched to the individual company's cash position rather than a single default approach.
| Interest method | £250,000 loan, 9 months at 0.85%/month | Cash released at completion | Monthly payment |
|---|---|---|---|
| Rolled up | Approx. £19,470 (compounded) | £250,000 | None, added to balance |
| Retained | £19,125 (9 x £2,125, simple) | £230,875 | None, pre-deducted |
| Serviced | £19,125 (9 x £2,125, simple) | £250,000 | £2,125 |
Step-by-step
- Confirm the exit route and whether monthly income exists during the loan term
- Ask the lender to quote all three interest methods against the same rate and term
- Compare total cost, cash released at completion, and monthly obligation side by side
- Check the rebate policy for early redemption before choosing a retained structure
Example
A trading LLP needed £180,000 for six months to buy stock ahead of a supplier deadline, with an asset sale expected to repay the loan. With steady monthly income from existing contracts, the LLP chose serviced interest at 0.75% a month, paying £1,350 monthly and keeping the full £180,000 available on day one, rather than losing part of it to a retained deduction.
Frequently asked questions
Can a company switch interest payment method during the loan term?
Most lenders fix the method at completion and do not allow mid-term switching without a full facility amendment. Some will agree a change if requested early enough and the borrower's circumstances have shifted, but this is decided case by case and may involve a fee, so it should not be assumed as a fallback option.
Does rolled-up interest always cost more than serviced interest?
Over a typical 6 to 12 month bridging term, rolled-up interest usually costs slightly more than serviced interest at the same headline rate because interest compounds monthly rather than being settled as it accrues. The difference is generally a few hundred to a few thousand pounds depending on loan size and term, not a dramatic gap.
What happens to retained interest if the loan redeems early?
Most bridging lenders rebate the unused portion of retained interest when a loan redeems before the end of the agreed term, calculated on a daily basis from the redemption date. Some facilities include a minimum interest period, commonly one to three months, so check the specific terms before assuming a full rebate applies.
Is serviced interest always the cheapest option?
Serviced interest is usually the lowest total cost because there is no compounding and no upfront deduction, but it is only available to borrowers who can evidence sufficient monthly income to cover the payment. If affordability cannot be demonstrated, the lender will offer rolled-up or retained terms instead regardless of preference.
Do all bridging lenders on the FundBiz panel offer all three methods?
Not every lender offers every method on every deal; availability depends on the security type, loan-to-value, and the borrower's income profile. FundBiz matches the enquiry to panel lenders that offer terms suited to the specific case rather than assuming all three options are open on every application.
Does the interest payment method affect eligibility for FundBiz's panel?
No, the eligibility rule is separate from the interest method: FundBiz only introduces limited companies, LLPs and partnerships of four or more to its panel regardless of whether rolled-up, retained or serviced interest is ultimately chosen. The interest structure is agreed with the lender after eligibility is confirmed.
By Adam Parker, Director, Best Business Loans Ltd. Last reviewed 2026-08-07.