Investment Deposit: The Pros and Cons of 20% vs 10%

Most lenders require a 20% deposit to avoid Lenders Mortgage Insurance on an investment property loan.

That figure matters because it determines not only your upfront cash requirement but also your loan to value ratio, your access to investor interest rates, and whether you'll pay LMI. For someone buying in Albert Park, where properties in the suburb command premium prices, the difference between a 10% and 20% deposit can mean $80,000 to $100,000 in additional capital tied up in a single asset. That capital could instead fund a second deposit, support renovations, or remain liquid for opportunity.

Why 20% Deposit Remains the Standard for Investment Property Finance

A 20% deposit keeps your LVR at 80%, which is the threshold most lenders use to waive Lenders Mortgage Insurance.

LMI protects the lender if you default, not you. It's a one-off cost that can range from a few thousand dollars to over $30,000 depending on your investment loan amount and deposit size. Avoiding it means more of your capital goes into the property itself rather than into insurance that delivers no ongoing benefit. An 80% LVR also opens access to better investor interest rates and a wider range of investment loan products, particularly if you're planning to use an interest only structure to maximise cash flow.

Consider a buyer purchasing an apartment near the Albert Park precinct with the intention of holding long term for capital growth. A 20% deposit positions them to negotiate rate discounts, claim negative gating benefits without immediate cash flow pressure, and retain borrowing capacity for future acquisitions. The upfront cost is higher, but the loan structure works harder.

The 10% Deposit Strategy and When It Makes Sense

You can secure an investment property loan with a 10% deposit, but you'll pay LMI and face a smaller pool of lenders willing to offer that LVR.

A 90% LVR isn't inherently reckless. It's a leverage decision. If you're an Albert Park resident with equity in your home and strong income, accessing that equity to fund a 10% deposit on a second property lets you enter the market sooner and spread your capital across multiple assets rather than locking it into one. The LMI cost becomes a calculated trade-off for earlier portfolio growth and the compounding effect of holding two properties instead of one.

In a scenario where someone uses equity release from their Albert Park home to fund a 10% deposit on a rental property in a growth corridor, they're paying LMI but they're also leveraging existing wealth to build passive income and capture capital growth in a second location. The LMI might cost $15,000, but if that property appreciates by 6% annually, the decision pays for itself within two years. The structure only works if rental income covers most of the interest only repayments and if they've preserved enough borrowing capacity to service both loans comfortably.

How Lenders Assess Investor Deposit and Borrowing Capacity

Lenders calculate your borrowing capacity using rental income at 80% of its actual value to account for vacancy rate and holding costs.

That discount matters more at higher LVRs. If you're borrowing at 90%, the lender applies stricter serviceability tests because the loan amount is higher and the buffer is smaller. They'll also factor in body corporate fees, which are common in Albert Park's apartment blocks, along with other claimable expenses like property management and interest. A higher deposit improves your serviceability position by reducing the loan size, which in turn increases the likelihood of approval and access to investment loan features like offset accounts or redraw facilities.

Property investor loan assessments also consider your existing debts, living expenses, and whether you're planning to hold the loan on interest only or principal and interest. Interest only repayments are lower, which helps with cash flow in the early years, but they don't reduce the principal balance. Lenders typically offer interest only periods of five years, after which the loan reverts to principal and interest unless you refinance.

Equity Release vs Cash Deposit for Property Investment Strategy

Using equity from your existing home lets you access investment loan options without drawing down your savings.

Equity release works by refinancing your owner-occupied home loan and borrowing against the increased value of that property. If your Albert Park home has appreciated and you've paid down the loan, you might have $200,000 or more in usable equity. Lenders will typically allow you to borrow up to 80% of your home's value minus what you owe, and that released equity can form your deposit and cover stamp duty on the investment property. The advantage is that your savings remain intact for other opportunities or as a buffer. The risk is that you're now servicing two loans, and if the investment property remains vacant or the market softens, you're exposed on both assets.

Cash deposits offer more control and lower total debt. If you've saved a 20% deposit and have additional funds for stamp duty and buying costs, you're entering the investment with a lower loan to value ratio and less reliance on rental income to cover repayments. For someone in Albert Park with a high income and disciplined savings, this approach reduces risk and maximises tax deductions through negative gearing without overextending serviceability.

The Role of Lenders Mortgage Insurance in Investment Loan Application

LMI is calculated as a percentage of the loan amount and increases sharply above 80% LVR.

At 85% LVR, LMI might cost $8,000 to $12,000. At 90%, it can exceed $20,000. At 95%, which some lenders offer to owner-occupiers but rarely to investors, the cost becomes prohibitive. LMI can be capitalised into the loan, meaning you don't pay it upfront, but that increases your loan amount and the interest you'll pay over the life of the loan. For investors, the decision to pay LMI should be weighed against the opportunity cost of waiting another year or two to save a larger deposit. If property values are rising and you're confident in the location, paying LMI to enter sooner can deliver better long term results than sitting on the sideline.

LMI also doesn't transfer if you refinance your investment loan. If you pay $15,000 in LMI and later switch lenders, you don't get that premium back. That's worth considering if you're planning to refinance in the short term to access better investor interest rates or additional investment loan features.

Fixed Rate vs Variable Interest Rate and Deposit Size

Your deposit size doesn't directly affect whether you choose a fixed or variable interest rate, but it influences the range of investment loan products available to you.

Lenders offer their most aggressive rate discounts to borrowers with lower LVRs and larger deposits. At 80% LVR, you'll access a wider range of fixed rate options, including split rate structures where part of your loan is fixed and part remains variable. This gives you certainty over a portion of your repayments while retaining flexibility to make extra payments or access redraw on the variable portion. At 90% LVR, your fixed rate options narrow, and the rates themselves are typically higher.

Variable interest rate loans offer more flexibility, which matters if you're planning to pay down the loan faster or if you anticipate needing to access funds for renovations or portfolio growth. Fixed rates lock in your repayments for a set period, which suits investors who want predictable cash flow and are comfortable with the rate they're securing. The decision between fixed and variable rate should align with your broader property investment strategy, not just your deposit size.

Maximise Tax Deductions and Negative Gearing Benefits

Negative gearing works when your rental income is less than your loan repayments and holding costs, allowing you to offset that loss against your taxable income.

The higher your loan amount, the higher your interest repayments, and the larger your potential tax benefit. A smaller deposit means a larger loan, which increases your claimable expenses and maximises tax deductions in the early years. For a high-income Albert Park professional, that tax offset can reduce the after-tax cost of holding the investment property significantly. But negative gearing only makes sense if the property is likely to appreciate in value over time. If capital growth stalls, you're funding a loss without the corresponding gain.

Interest only repayments amplify this effect because your loan balance stays high, keeping your interest charges and tax deductions at their maximum. Once the interest only period ends, the loan reverts to principal and interest, your repayments increase, and your tax benefit shrinks. Planning for that transition is part of structuring the loan correctly from the start.

Call one of our team or book an appointment at a time that works for you to discuss how your deposit size, borrowing capacity, and loan structure can align with your property investment goals.

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