Sequencing & Opportunity Cost Strategy
Optimizing the sequence of your purchases to prevent borrowing blocks.
Core Assessment Analysis
The sequence in which borrowing decisions are made has cumulative effects on borrowing capacity that are not always obvious when each decision is made in isolation. **Why sequencing matters:** Each loan adds to the committed liabilities that lenders assess in the serviceability calculation. A large principal-and-interest home loan on a primary residence creates a substantial repayment commitment that reduces capacity for subsequent loans. A high-yield investment property, by contrast, generates rental income that partially offsets the debt in the serviceability calculation, meaning the net capacity drag is lower per dollar of debt. **The capacity lock-out problem:** A borrower who purchases an expensive primary residence early — using maximum debt capacity to do so — may find that subsequent investment purchases are declined or severely limited, not because their income has changed, but because the earlier loan has consumed the available serviceability headroom. Lenders cannot differentiate between a borrower who intends to keep borrowing and one who does not — every application is assessed on current total commitments. **Refinancing and changing loan structure:** Switching from principal-and-interest to interest-only repayments on existing loans reduces the assessed committed expenditure (because the monthly repayment is lower), which can restore some borrowing capacity. However, interest-only periods have maximum terms at most lenders, and the reversion to P&I creates a higher future repayment — which is factored in under some lenders' policy. **Opportunity cost:** The opportunity cost of borrowing decisions is not just financial — it is about which future lending decisions remain possible. A high-LVR purchase in a low-growth location may satisfy an immediate housing need but constrain future equity release and refinancing options. **Interaction between existing loans and new lending:** When a borrower already has one or more loans, new lenders assess the full picture: all existing loan repayments (P&I or IO as applicable), credit card limits, personal liabilities, and the proposed new loan. The order in which properties were purchased, and the loan structures attached to them, materially affects this calculation. This page explains the lending mechanics. Investment strategy and sequencing decisions require professional financial advice appropriate to individual circumstances.
Why Underwriters Focus Here
Each loan application is assessed on the borrower's total committed debt position at that point in time. Earlier borrowing decisions that consumed serviceability headroom directly limit what can be approved later. Lenders apply the same serviceability rules regardless of whether the borrower has one loan or six — the cumulative effect of prior decisions is always present in the assessment.
Key Outcome Assessment Factors
The loan type (P&I vs IO) on existing loans, the income-producing capacity of existing investment properties, the LVR positions across existing properties (which affects equity release options), credit card limits, and the lender's specific rental income shading policy all interact to determine how much additional capacity remains. The sequence of purchase decisions is the underlying driver of this cumulative position.
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