Photo by Brett Wharton on UnsplashThe moment a term sheet arrives with "interest retention" in the facility summary, the question is usually the same: why does the net advance not match the loan amount agreed? The mechanic is straightforward once explained, but it catches a meaningful number of borrowers off guard, particularly those arranging a short-term bridging facility for the first time.
Interest retention is a structure where the lender calculates the interest due for a fixed number of months and deducts that amount from the gross loan proceeds at drawdown. You receive the net figure on day one. The gross loan amount registers as the legal charge against the property and determines your loan-to-value ratio.
This is distinct from a rolled-up structure, where interest accrues throughout the term and is settled alongside the principal on exit. Neither method requires monthly servicing; with retention the lender takes its interest exposure off the table on day one, whereas with roll-up the lender carries that exposure for the duration.
The mechanics of interest retention
The facility letter specifies the gross loan amount, the monthly rate, and the retention period. At drawdown, the lender multiplies the rate and the retention period, then withholds the result from the funds released.
A concrete example: a six-month bridge at 0.9% per month on a gross loan of £1,500,000. Retained interest: £81,000 (six months × 0.9% × £1,500,000). Net advance: £1,419,000. The £1,500,000 gross loan is registered as the legal charge against the property.
The early redemption question
Most lenders include a rebate clause: if the loan exits before the retention period expires, the unused months are refunded. On a six-month retention redeeming at month four, two months of interest are refunded. This is not universal; the facility letter will state exactly whether a rebate applies and how it is calculated. Confirm this in writing before drawdown.
How this compares with roll-up
With roll-up, the borrower receives the full gross loan at drawdown and the lender accrues interest against the balance throughout the term. Neither structure requires monthly payments, but the timing of the cash deduction differs: retention pre-deducts it at drawdown, while roll-up collects it on exit. Our guide to rolled-up vs serviced interest covers that trade-off in full. The short version: retention suits a borrower who wants a fixed, upfront deduction and a predictable total cost; roll-up suits a borrower who needs the full gross advance available from day one.
Net proceeds, LTV, and sizing the gross loan
LTV across Singapore and the UK is always calculated on the gross loan, not the net advance. This is the detail that most often surprises borrowers who plan cash flows around the full gross amount without accounting for what retention will deduct.
A worked example across both markets
In Singapore, a borrower needs S$3,000,000 net to complete a Good Class Bungalow acquisition. The lender offers a GCB bridging loan at up to 70% LTV against a valuation of S$5,000,000, giving a maximum gross loan of S$3,500,000. At 1.5% per month for three months, retention is S$157,500, leaving a net advance of S$3,342,500. That covers the requirement, but a borrower who planned on receiving S$3,500,000 net would face a shortfall at completion.
In the UK Midlands, where short-term bridging finance enquiries, including those from Stafford and the surrounding area, typically involve residential or semi-commercial security, the same maths applies. A £1,200,000 gross loan at 0.95% per month for six months retains £68,400. Net advance: £1,131,600. If purchase price plus SDLT and legal costs total £1,160,000, there is a gap that must be funded before completion.
Sizing the gross loan to meet a net requirement
The formula is: gross loan = target net advance ÷ (1 - [monthly rate × retention months]).
For a six-month retention at 1% per month, divide the target net by 0.94. On a £2,000,000 net requirement, the gross loan must be approximately £2,127,660: nearly £128,000 more than the target. That additional quantum raises the gross loan figure and feeds directly into the LTV calculation, so the property valuation must support it. If the numbers are not resolving cleanly, speak with our team before committing to a gross figure in heads of terms.
Understanding what drives bridging loan cost before reaching term sheet stage is the most reliable way to avoid resizing the deal at the last moment.

When retention suits the deal, and when it does not
Retention works well for short, high-conviction transactions with a confirmed exit. It suits a borrower completing a purchase ahead of a contracted property sale, refinancing into a mortgage already agreed in principle, or breaking a chain with a committed buyer in place. In each case, it offers a predictable total cost and no monthly servicing obligation.
It is a poor fit when the exit timeline is genuinely uncertain. A borrower bridging to a sale that may resolve in three months or take nine has already paid for the full retention period upfront. Extensions attract additional arrangement fees and further retention charges, compounding the cost significantly. The Mayfair deal in our UK portfolio illustrates why lender flexibility on structure matters when a high-value asset takes longer to move than planned.
Rikvin Capital is a direct private lender operating in Singapore and the UK, lending to accredited investors and corporates. We lend against the asset and the exit, not against income or regulatory stress tests. Structure (retention, roll-up, or serviced interest) is part of the conversation from day one.
The honest position: retention is as much a lender-risk tool as a borrower convenience. The lender removes its interest-collection exposure at drawdown. Borrowers get execution certainty and a clean, one-cost structure. That is a fair exchange for the right deal, and not the right fit for one where timing is the primary uncertainty.
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Frequently asked questions
What is the difference between interest retention and rolled-up interest on a bridging loan?
Does early repayment trigger a refund of retained interest?
How do I calculate the gross loan needed to receive a specific net advance?
Is interest retention common for short-term bridging finance in Singapore?
Can I negotiate between a retention structure and roll-up?
Article sources1
Rikvin Capital cites primary, authoritative sources to support the information in our articles. The references below link directly to the original material.
- GOV.UK. SDLT