The renovation and the lowest-payment trap
Ana, 58, is a registered nurse earning $96,000. Her home is worth about $880,000 and has a $395,000 mortgage fixed at 6.85% until March. She has $30,000 in savings and a credit card owing $7,000 at 22.95%. She wants $65,000: $45,000 for a kitchen renovation and $20,000 as a contingency. The lender’s floating rate is 7.40%, a personal loan is available at 13.50% over five years, and the card rate is 22.95%. Ana plans to retire at 67 and wants the lowest possible monthly repayment. A broker suggests a 30-year mortgage top-up because it produces the smallest payment. Ana is unsure whether to fix the whole amount or keep part flexible.
1. Compare the three funding options for Ana and recommend a structure, explaining why the lowest monthly repayment is not automatically the best answer.
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A 30-year mortgage top-up has the lowest monthly repayment because the principal is spread over the longest term, but it also maximises total interest and leaves renovation debt outstanding into retirement. A five-year personal loan costs more per month but clears the debt faster and avoids adding to the home loan. The credit card is unsuitable for a $65,000 renovation: the rate is highest, the repayment discipline is weakest and the balance can become revolving debt.
The better structure is likely a mortgage top-up split into two parts: $45,000 fixed for a defined period, and $20,000 on a flexible or offset facility so Ana can draw only what she needs and repay the contingency quickly. She should keep a separate cash buffer rather than treating the whole $20,000 as spending money. Before recommending this, the lender should check break costs on the existing fixed loan, confirm the home’s valuation and security position, and compare the total interest of the split against a shorter-term personal loan. If Ana lacks discipline with revolving credit, a fixed personal loan for part of the amount may be safer despite the higher rate. The recommendation must reflect her retirement horizon, not just the lowest monthly figure.
2. What lending, disclosure and suitability checks should be completed before the structure is approved, given Ana’s retirement timeline?
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The lender should verify Ana’s income, ongoing expenses, other debts and superannuation assumptions. It should test the new repayments at a higher interest rate and consider a reduction in income at retirement, not merely her current salary. If the home loan will still be outstanding at 67, the lender should assess whether her retirement income can service it or whether the term and structure should be shortened. The $7,000 card debt should be addressed separately, ideally repaid from savings or consolidated only if the card limit is reduced.
Disclosure must show the interest rate, fees, total cost, repayment schedule and the consequences of a variable or offset structure. If the existing fixed loan is broken, break fees must be disclosed and quantified. The lender should record why a mortgage top-up was preferred over a personal loan, the rationale for the split, and the risks of using the home as security. Ana should understand that failing to repay could put the home at risk. The lender must not let the broker’s “lowest payment” suggestion override affordability and the retirement timeline.