Building a property portfolio means holding more than one investment property at the same time, with each asset contributing to your overall wealth position.
The decision most Hobart investors face is whether to refinance and draw equity from an existing property to fund the next purchase, or to keep each loan separate and start fresh. Your answer depends on how much equity you have, what your lender will count as rental income, and whether you want the option to sell one property without disrupting the others.
How Lenders Assess Rental Income Across Multiple Properties
Lenders typically assess 80 per cent of rental income when calculating your borrowing capacity for a second or third investment property. That means if your existing rental property generates $500 per week, the lender will only count $400 of that income when assessing whether you can service a new loan. Some lenders apply a lower shading rate, such as 75 per cent, depending on the property type and location. Rental income assessment can vary between lenders, and choosing the wrong one can cost you tens of thousands in borrowing capacity.
Consider a Hobart investor who owns a two-bedroom unit in Glenorchy, currently rented at $450 per week. The lender assesses 80 per cent of that income, or $360 per week, while still counting the full loan repayment as a liability. If the investor wants to purchase a second property, their borrowing capacity depends on the gap between what the lender recognises as income and what they count as an expense. In this scenario, the investor's capacity might be reduced by $15,000 to $20,000 compared to someone without an existing property, purely because of the income shading.
Using Equity to Fund Your Next Deposit
You can borrow against the equity in your current property to fund the deposit and costs for your next purchase, rather than waiting to save cash. Lenders will typically allow you to borrow up to 80 per cent of the property's current value without requiring Lenders Mortgage Insurance, though some will go higher with LMI applied. If your Glenorchy unit was purchased for $380,000 and is now valued at $450,000, you have $70,000 in equity. At 80 per cent LVR, the lender allows a total loan of $360,000 against that property. If your current loan balance is $340,000, you could access up to $20,000 in usable equity.
Equity release gives you access to capital without selling, but it also increases your debt on the original property. That higher loan balance affects your borrowing capacity for the next property and increases the total interest you pay over time. Some investors prefer to use equity as a deposit top-up rather than funding the entire deposit, keeping the new property loan as small as possible to preserve serviceability.
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Interest-Only Loans and Portfolio Cashflow
Most portfolio investors choose interest-only repayments on their investment loans to reduce the monthly outgoings and preserve cashflow. Interest-only investment loans are available for an initial period of one to five years, after which the loan reverts to principal and interest unless you renegotiate. The monthly repayment on a $400,000 loan at current variable rates is roughly $600 to $700 lower on an interest-only basis compared to principal and interest, depending on the rate and term.
That cashflow difference matters when you're servicing two or three properties at the same time. If your portfolio generates $1,200 per week in rent but costs $1,500 per week in loan repayments, body corporate fees, insurance and rates, you're covering a $300 per week shortfall from your salary. Moving one or more loans to interest-only can reduce that shortfall, though you're not paying down the loan balance during the interest-only period.
Loan Structuring and Cross-Collateralisation
When you use equity from Property A to buy Property B, the lender may ask you to cross-collateralise the loans, meaning both properties are used as security for both loans. Cross-collateralisation can reduce establishment costs and sometimes avoid LMI, but it also means you cannot sell or refinance one property without the lender's consent on both. If you want to sell your Glenorchy unit in three years, but the lender has both that property and your second property as security, you'll need to refinance or pay down enough debt to release the unit from the security pool.
The alternative is to keep each property on a separate loan with separate security. You'll pay higher upfront costs, and you may need LMI if your deposit on the second property is below 20 per cent, but you maintain full control over each asset. For investors planning to grow a portfolio beyond two or three properties, standalone security is usually the better long-term structure.
Managing Multiple Variable and Fixed Rates
Once you hold more than one investment loan, you need to decide whether to fix, split, or leave each loan on a variable rate. A split loan structure allows you to fix part of each loan and leave the rest variable, giving you some rate certainty without locking in the entire balance. Some investors fix the loan on their most recently purchased property and leave older loans on variable rates, particularly if those older loans have offset accounts attached.
Hobart's rental market has tightened over the past few years, with vacancy rates below 1 per cent in some suburbs, which means rental income is relatively stable. That stability gives you more confidence to hold variable rate debt, knowing your income is unlikely to drop suddenly. However, if your portfolio is negatively geared and you're covering a shortfall each month, fixing part of your debt protects you from rate increases that could push that shortfall beyond what you can comfortably fund from your salary.
Tax Treatment and Claimable Expenses Across a Portfolio
All interest on all investment loans is deductible against your rental income, along with property management fees, council rates, insurance, body corporate fees, repairs, and depreciation. If your total claimable expenses exceed your total rental income, the loss can be offset against your salary under the current negative gearing rules for properties held before 12 May 2026. For properties acquired after that date, losses are quarantined and can only be offset against other residential property income from the 2027-28 income year onward, unless the property is an eligible new build.
Depreciation becomes more valuable as your portfolio grows. A newer property in Bridgewater might generate $8,000 to $10,000 per year in depreciation deductions in the early years, while an older property in South Hobart might generate $2,000 to $3,000. When combined, those deductions reduce your taxable income without requiring any actual cash outlay. A depreciation schedule is a one-off cost per property, usually between $500 and $800, and it's also tax deductible.
Lenders Mortgage Insurance on a Second or Third Property
If you're borrowing above 80 per cent LVR on your next purchase, you'll pay LMI again, even if you've already paid it on your first property. LMI is calculated per loan, not per borrower, and the premium increases with both the loan amount and the LVR. On a $450,000 loan at 90 per cent LVR, the LMI premium might be $12,000 to $15,000, depending on the lender and insurer. Some lenders allow you to capitalise the LMI premium into the loan, which means you don't pay it upfront, but you do pay interest on it for the life of the loan.
If you're using equity from your first property and topping up with a small amount of cash, you may still be able to keep the new loan at or below 80 per cent LVR and avoid LMI altogether. Running the numbers before you commit to a purchase shows you whether paying LMI to buy sooner is worthwhile, or whether waiting a few more months to increase your deposit saves you more in the long run.
When to Refinance Your Existing Investment Loans
Once you've held a loan for two or three years, it's worth reviewing whether your current rate and loan features still suit your position. Investment loan refinancing can reduce your interest rate, release additional equity, or consolidate multiple loans under one lender if that improves your serviceability for the next purchase. Some lenders offer better rates to new customers than they do to existing customers, and refinancing is often the only way to access those lower rates.
If you refinanced your Glenorchy unit from 6.2 per cent to 5.8 per cent, the saving on a $340,000 loan is roughly $110 per month. Across a portfolio of three properties, that type of saving can cover your body corporate fees or insurance premiums. Refinancing does come with discharge fees from your old lender, application fees with the new lender, and valuation costs, so the rate difference needs to be large enough to justify the upfront cost.
Portfolio Loan Restructuring for Long-Term Growth
As your portfolio grows, the way your loans are structured becomes more important than the rate you're paying. Portfolio loan restructuring involves splitting loan accounts, changing security arrangements, or moving debt between properties to improve your borrowing capacity or create flexibility for future sales. If you plan to sell one property to fund the deposit on two others, you need each loan to be portable or separable without triggering a full refinance.
Some investors restructure their portfolio every few years to consolidate older debt, release equity, or move from interest-only to principal and interest on properties they plan to hold long-term. The structure you set up for your first property rarely suits a portfolio of four or five properties, and adjusting it proactively is less costly than waiting until a lender declines your next application because your existing loans are poorly arranged.
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Frequently Asked Questions
How much equity do I need to buy a second investment property in Hobart?
You need enough equity to cover at least the deposit and purchase costs on the next property, typically 10 to 20 per cent of the purchase price plus stamp duty and legal fees. Lenders will usually let you borrow up to 80 per cent of your existing property's value without LMI, so the usable equity is the difference between that 80 per cent figure and your current loan balance.
Can I use rental income from my first property to help qualify for a second loan?
Lenders will assess 75 to 80 per cent of the rental income from your existing property when calculating your borrowing capacity for the next loan. The remainder is discounted to account for vacancy, maintenance, and rental income volatility, which reduces your capacity compared to someone with the same salary but no existing investment property.
Should I fix or keep my investment loans on a variable rate?
It depends on your cashflow position and your view on rate movements. A variable rate gives you flexibility to make extra repayments and access offset accounts, while a fixed rate locks in your repayment amount for a set period. Many portfolio investors split their loans, fixing part and leaving part variable to balance certainty with flexibility.
What happens if I cross-collateralise my investment properties?
Cross-collateralisation means the lender holds both properties as security for both loans, which can reduce costs upfront but restricts your ability to sell or refinance one property without affecting the other. If you want to sell one property later, you may need to refinance or pay down enough debt to release it from the security pool.
Do I pay Lenders Mortgage Insurance again on my second property?
If you borrow above 80 per cent LVR on the second property, you will pay LMI again. LMI is charged per loan, not per borrower, and the premium depends on the loan amount and LVR. Using equity from your first property to keep the second loan at or below 80 per cent LVR avoids the need for LMI on that purchase.
