Commercial Loan Repayment Structures: Principal & Interest vs Interest Only vs Interest Capitalisation

Choosing the right repayment structure affects your monthly costs, total interest paid, and cash flow management. Commercial lenders offer three main repayment types: Principal & Interest, Interest Only, and Interest Capitalisation. Each serves different business needs and financial strategies.

Your repayment structure affects monthly costs, total interest paid, and cash flow management. Understanding these differences helps you discuss options with your mortgage broker and find structures that suit your business model.

How Commercial Loan Terms Work

Commercial loan terms vary significantly by asset type and lender policy. Banks balance longer investment periods against risk management and repayment certainty.

Loan terms depend on the underlying asset and its income-generating capacity:

• Residential Investment Property: Up to 30 years
• Commercial Property: Up to 30 years
• Business Cash Flow (GSA backing): Up to 10 years
• Business Equipment: Up to 5 years
• Unsecured Business Loans: Up to 5 years

These timeframes represent maximum terms available across the market. Individual lender policies, your financial position, and asset quality influence the actual terms offered.

Commercial Property and WALE (Weighted Average Lease Expiry)

WALE measures the average time until all leases in a commercial property expire. This metric directly impacts lender confidence and loan terms.

A longer WALE indicates stable rental income for an extended period. Properties with WALE above 5 years typically access better rates and terms than those with shorter lease profiles.

Commercial property lenders use WALE to assess income stability and determine maximum loan amounts. Properties with strong WALE figures may qualify for higher borrowing limits, subject to other assessment criteria. LVR limits vary by lender and are subject to individual assessment.

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Principal & Interest (P&I) Repayments

Principal and interest commercial loans reduce your loan balance over time through scheduled payments covering both interest charges and principal reduction.

P&I structures typically use 25-year amortisation periods for commercial property loans. Your monthly payment stays relatively stable, though it adjusts with interest rate changes on variable loans.

Repayment amounts are calculated using the approved loan limit, current interest rate, and remaining loan term. This differs from residential mortgages where repayments often adjust based on the outstanding balance.

P&I repayments build equity in the underlying asset while maintaining predictable payment schedules. This structure suits businesses with steady cash flow seeking gradual debt reduction.

Interest Only (IO) Repayments

Interest only commercial loans cover interest charges without reducing the principal balance during the IO period, typically lasting 1-5 years.

IO periods preserve cash flow by reducing monthly payment obligations. A $1 million loan at 6.5% requires approximately $5,417 monthly on interest only, compared to $6,752 on P&I over 25 years.

After the IO period expires, the loan typically converts to P&I repayments over the remaining term. This creates higher future payment obligations as the principal must be repaid over fewer years.

IO structures often carry higher interest rates than P&I equivalents, reflecting increased lender risk. Rate premiums typically range from 0.15% to 0.50% above standard P&I rates. Fees and rates vary by lender and are subject to change.

Interest Capitalisation (ICAP)

Interest Capitalisation adds interest charges to the loan balance rather than requiring monthly payments. This structure is less common and typically reserved for specific development or business scenarios.

ICAP arrangements suit projects with delayed income streams, such as property developments or seasonal businesses. The accumulated interest compounds over time, significantly increasing the total amount owed.

Most lenders limit ICAP periods to 12-24 months and require detailed exit strategies showing how the accumulated debt will be repaid. These facilities often carry higher rates reflecting the deferred payment risk.

Businesses considering ICAP must model the compound interest effect carefully. A $500,000 loan capitalising interest at 7.5% annually adds $37,500 in year one, $40,312 in year two, creating a total debt of $577,812 after 24 months.

Choosing Your Repayment Structure

Your optimal repayment structure depends on cash flow patterns, business growth plans, and risk tolerance. Each structure serves different strategic purposes.

P&I repayments suit established businesses with predictable income seeking gradual debt reduction. The forced principal repayment builds equity while maintaining reasonable payment obligations.

IO repayments benefit businesses prioritising cash flow preservation for growth investment or seasonal operations. The cash flow benefit must outweigh the higher interest costs and future payment increases.

ICAP arrangements serve specialised scenarios where immediate repayments would harm business viability. The compound interest effect requires careful consideration and strong exit planning.

Assessment and Approval Considerations

Tax implications vary by structure and individual circumstances. P&I repayments may offer different deductibility profiles compared to IO arrangements, depending on the asset's use and your entity structure. Tax treatment varies - speak with your accountant.

Commercial lenders assess your repayment capacity differently across structures. IO applications may require stronger cash flow coverage ratios to account for future P&I conversion, typically requiring 1.25-1.35 times net rental income coverage compared to 1.15-1.25 times for P&I loans.

LVR limits may vary by repayment type, with some lenders offering higher borrowing limits for P&I structures compared to IO equivalents. LVR limits vary by lender and are subject to individual assessment.

Lenders conduct detailed serviceability testing for each structure type. This includes stress testing at higher interest rates and assessing your capacity to service future P&I payments if currently on interest only terms.

Commercial lending negotiations involve multiple variables beyond repayment structure. Experienced mortgage brokers can present your application across different lenders and structure combinations to identify optimal terms subject to individual lender assessment.

Your chosen structure should align with business cash flow cycles, growth plans, and debt management strategy. Regular review with your mortgage broker can help determine if your loan structure continues serving your evolving business needs effectively.

Key Choice Lending has access to 72+ lenders and has supported Australian borrowers through more than $1 billion in transactions. Founder Matthew Clark is a two-time Amazon bestselling author and Better Business Award winner.

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