Capitalised Interest Explained: How It Works in Australian Private Lending

Capitalised interest is one of the most useful but least understood concepts in Australian private lending. For borrowers using a private second mortgage, bridging loan, caveat loan, or construction facility, capitalised interest is often the structure that makes the deal possible. It removes the requirement to make monthly repayments during the loan term, instead rolling all interest into the final balance to be paid off at exit. That trade matters when cash flow is tight, when rental income has not yet started, or when a project has no income at all until completion or sale.

This 2026 guide explains what capitalised interest is, how it works in Australian private lending, what it costs, and how it affects your net loan proceeds, borrowing capacity, and loan-to-value ratio (LVR). You will find worked examples, real deal structures from Innovate Funding, the terminology lenders use, and a side-by-side comparison with interest-only and pre-paid interest options.

What Is Capitalised Interest?

Capitalised interest is interest that is added to the outstanding loan balance rather than paid in cash to the lender each month. Instead of an interest invoice landing every 30 days, the interest accrues, compounds, and is settled in a lump sum at the end of the loan term, normally from the proceeds of a property sale, a refinance, or a project completion.

In Australia, capitalised interest is the standard repayment structure for most short-term private loans, including second mortgages, caveat loans, bridging loans, and construction facilities. It is also widely used in mezzanine debt, residual stock loans, and equity release loans. The mechanism is governed by the loan agreement and the security documents, with the credit licensee disclosing the structure clearly to consumer borrowers under National Consumer Credit Protection Act obligations.

The structure is allowed and supervised under ASIC credit licensing rules for consumer credit, and is unrestricted for business-purpose lending. The interest itself is the same dollar value the lender would have charged under a monthly servicing structure for the same period and rate. What changes is the timing of payment and, due to compounding, the gross balance the lender exposes itself to over the term.

How Capitalised Interest Works in Australia: Step by Step

The mechanics are simple but the cash flow implications are powerful. Here is how a typical capitalised-interest loan runs from settlement to exit:

1. Loan settlement and interest reserve setup. At settlement, the lender either advances the full facility net of fees, or, in some structures, deducts pre-paid interest for the full term. The interest reserve sits inside the gross facility limit and is recorded on day one.

2. Daily interest accrual. Interest accrues daily on the outstanding balance at the contracted rate. For a private second mortgage at 1.25% per month, the daily rate is approximately 0.041% applied to the principal each day.

3. Monthly capitalisation. On each monthly anniversary of the loan, the accrued interest is formally added to the loan balance, increasing the principal that future interest is calculated on. This is the compounding step that makes capitalised interest mathematically different from a simple interest-only loan.

4. Compound growth on new balance. Each subsequent month accrues interest on the new, slightly higher balance. Over a 6 to 12 month term, this compounding adds a small but real premium versus simple interest. The longer the term, the larger the compounding gap.

5. Final payout at exit. At loan exit, whether by sale, refinance, or completion, the borrower pays out the full gross balance including all capitalised interest in a single settlement. The settlement statement shows the original advance, capitalised interest, fees, and any discharge or break costs.

When Capitalised Interest Suits You

Capitalised interest is not the right structure for every borrower. It is most valuable when monthly servicing is impractical or impossible. Common scenarios include:

• Construction and development projects: Builders and developers funding a project with no rental income during the build phase. The land development loan or construction facility capitalises interest until practical completion.

• Bridging between sale and purchase: Homeowners and investors who have purchased a new property before settling the sale of their existing one and need to bridge the gap without a second monthly mortgage payment.

• Caveat loans on a settlement deadline: Short-term advances where the borrower has 30 to 90 days until the exit event and cannot accommodate monthly servicing.

• Self-employed borrowers preserving cash flow: Operators using a short-term business loan or no-doc loan who need to deploy every dollar of working capital into the business rather than into loan servicing.

• Investors waiting on a refinance approval: Borrowers who have a long-term lender approved in principle but need a 90 to 180 day private bridge while documents finalise.

• Equity release for a one-off purpose: Borrowers using an equity release loan for a tax bill, a medical event, or a once-off business outlay where the exit is a refinance or asset sale.

Cost and LVR Impact in 2026

Capitalised interest does not change the headline rate. It changes the gross balance, the LVR, and the net proceeds the borrower walks away with at settlement. The 2026 Australian market sits in these ranges:

• First mortgage rates: From 8.95% p.a. on a first mortgage private facility. On a $1 million loan over 12 months, total capitalised interest is approximately $93,200 versus simple interest of $89,500, a compounding premium of roughly $3,700.

• Second mortgage rates: From 1.25% per month. On a $500,000 loan over 6 months, total capitalised interest is approximately $38,400 versus simple interest of $37,500, a compounding premium of roughly $900.

• Caveat loan rates: From 1.50%–1.75% per month for terms of 1 to 6 months. The compounding premium is small in dollar terms because of the short tenor.

• LVR calculation: Lenders calculate LVR on the gross facility limit including the interest reserve. A borrower seeking $400,000 net at 70% LVR may need a $440,000 gross facility to cover capitalised interest, which lifts the headline LVR to 77% on the same security value.

• Net proceeds at settlement: Some lenders deduct the full term of pre-paid interest at settlement, reducing the cash advanced. Others accrue and capitalise monthly. Always confirm the method in writing before signing the letter of offer.

A useful rule of thumb for second mortgage borrowers: the gross balance at exit on a 12-month capitalised facility at 1.25% per month is approximately the original principal multiplied by 1.16. On a $200,000 advance, the payout at month 12 is approximately $232,000, comprising $200,000 principal and $32,000 capitalised interest.

Real-World Capitalised Interest Examples

Sydney bridging loan: $400K facility, 4 months

A Sydney homeowner had purchased a new home with a 30 day settlement and was waiting on the sale of their existing property. Innovate Funding wrote a $400,000 bridging facility at 1.35% per month over 4 months. Interest was fully capitalised, requiring no monthly payments while the borrower juggled the move and the sale campaign. At month 4, the existing home settled for $1.45 million, the bridging payout of approximately $422,200 was settled from sale proceeds, and the borrower closed out without ever making a monthly repayment.

Melbourne construction facility: $3M, 14 months

A Melbourne developer funding a 6-unit townhouse project on a $3 million construction facility at 9.75% p.a. capitalised interest across the 14-month build. Total capitalised interest at completion was approximately $358,000 against simple-interest equivalent of $341,250, a compounding premium of $16,750. With no rental income during the build and limited working capital, capitalisation was the only structurally viable option. The project sold all six units within 60 days of completion and refinanced none.

Brisbane caveat loan: $250K, 60 days

A Queensland small business owner needed $250,000 for 60 days to settle a property purchase ahead of a confirmed bank refinance. Innovate Funding wrote a caveat loan at 1.65% per month, fully capitalised. At day 60 the bank refinance settled, paying out the caveat at approximately $258,500. The borrower never made a monthly payment, preserved working capital through the bridging period, and the bank refinance funded the full payout in one transaction.

Capitalised vs Interest-Only vs Pre-Paid Interest

Lenders typically offer up to three interest structures. Each has different cash flow, LVR, and net-proceeds implications:

• Capitalised interest: No monthly payments. Interest compounds into the loan balance. Higher gross balance and gross LVR. Best for no-income-during-term borrowers.

• Interest-only servicing: Monthly interest payments at the contracted rate. Loan balance stays at the original principal. Lower gross balance and lower LVR. Suits borrowers with reliable monthly cash flow.

• Pre-paid interest: Full term of interest is deducted from the advance at settlement. Net proceeds are reduced upfront, but no further payments are required during the term. Suits borrowers who can absorb the upfront reduction and want certainty over the total cost.

• Hybrid structures: Some lenders permit a 3 to 6 month capitalised period followed by interest-only servicing, particularly on construction and development loans. This gives the borrower cash flow protection during the riskiest phase and lower compounding cost over the back half of the term.

How to Apply for a Capitalised Interest Loan

The application process is identical to any other private mortgage application. The difference is in the structuring conversation with the broker or lender. Submission expectations align with the Australian Taxation Office guidance on business activity statements for self-employed and business borrowers, plus standard mortgage paperwork:

• Loan purpose statement: Confirms the loan is for a business, investment, or consumer purpose, which determines licensing and disclosure obligations.

• Property valuation or rate book figure: Forms the basis for LVR calculation, including the interest reserve.

• Exit strategy evidence: Refinance pre-approval letter, sales contract, project completion timeline, or asset sale strategy. The exit is more important than the borrower's income on capitalised facilities.

• Financials: Bank statements, ATO portal printout, and 12 months of business activity statements for self-employed borrowers.

• Stress test on the gross balance: Many lenders run a sensitivity check on the security value at the gross loan balance plus a 10% stress buffer to confirm the exit remains viable.

Frequently Asked Questions

Does capitalised interest cost more than interest-only?

The headline rate is identical. The total dollar interest paid is slightly higher under capitalisation due to compounding on the rising balance. Over a 12 month term at 1.25% per month, the compounding premium is roughly 0.5%–1% of the original principal compared to a simple interest-only equivalent.

Does capitalised interest reduce the cash I receive at settlement?

It depends on the lender. Some deduct the full term of pre-paid interest from the advance, reducing net proceeds upfront. Others accrue and capitalise monthly, advancing the full facility net of establishment fees only. Always confirm the method in writing in the letter of offer before signing.

How does capitalised interest affect my LVR?

Lenders calculate LVR on the gross loan amount including the interest reserve. Longer terms mean more capitalised interest, higher gross exposure, and a higher gross LVR. A borrower wanting $400,000 net at 70% LVR may need a $440,000 gross facility, which prices LVR at 77% on the same security.

Can I switch from capitalised interest to interest-only during the loan?

Some lenders permit a switch mid-term, particularly on construction and bridging facilities once an interim income source begins. Others lock the structure for the full term. Discuss switching flexibility with your broker before settlement and ensure any flexibility is documented in the letter of offer.

Is capitalised interest common in private lending?

Yes. It is the standard structure for most short-term private loans in Australia, particularly second mortgages, bridging loans, caveat loans, construction facilities, and mezzanine debt. Bank loans, by contrast, typically default to interest-only or principal-and-interest servicing.

Is capitalised interest tax-deductible?

For business and investment borrowers, interest is generally deductible in the financial year it is incurred, regardless of whether it is paid in cash or capitalised. The deduction recognises the accrual, not the cash payment. Always confirm the treatment with a registered tax agent and retain the lender's interest schedule for substantiation.

What happens at loan exit if the security sale is delayed?

Most facilities include an extension clause at the lender's discretion, typically with a small extension fee and continuation of the same rate. If the exit is materially delayed, the lender may reprice or require an interest reserve top-up. Always communicate delays early to negotiate favourable terms before default applies.

The Bottom Line on Capitalised Interest

Capitalised interest is a cash-flow tool, not a discount tool. It does not reduce the cost of borrowing in dollar terms, and the compounding effect adds a small premium over the equivalent interest-only structure. What it does is preserve cash flow during the term of the loan, which is often the difference between a deal that completes and a deal that defaults.

The right structure depends on whether you have reliable monthly income to service the debt during the term, whether you want certainty over the upfront cost, and whether the gross LVR remains within the lender's policy. Most private lending borrowers in Australia choose capitalised interest because their loan exists precisely because they have no servicing capacity in the short term.

If you are weighing capitalised against interest-only or pre-paid for an upcoming private loan, talk to Innovate Funding for a structuring conversation tailored to your project and exit. Visit our knowledge hub for more guides on Australian private lending, or contact us to discuss your scenario.