Beginner's guide to investment property deposits

How Much Deposit Do You Need for an Investment Property?

Most lenders want at least 20 per cent of the purchase price plus enough to cover costs like stamp duty and legal fees. Borrowing with less than 20 per cent down is possible, but it triggers Lenders Mortgage Insurance, which can add thousands to your upfront costs and affects how lenders assess your application.

The difference between 20 per cent and 25 per cent might sound small, but it changes the conversation with lenders. A higher deposit gives you access to sharper pricing, more product choice, and a wider lending panel. For someone looking at property around Swansea, where the location appeals to retirees downsizing from Sydney and families seeking proximity to the lake, a modest price point still requires careful planning around deposit size and how much buffer you hold after settlement.

Why Lenders Treat Investment Deposits Differently to Owner-Occupier Deposits

Lenders classify residential mortgages based on occupancy and risk weighting. An investment loan attracts a higher capital requirement for the bank under APRA's prudential standards, which means you face tighter serviceability rules and often a higher interest rate than someone buying to live in the property.

Since February, each lender has been limited to funding no more than 20 per cent of new investor loans at a debt-to-income ratio of six times or more. If your income is $120,000 and you want to borrow $750,000, you sit just over that line, and some lenders will decline the application outright rather than use one of their limited high-DTI slots on your file. A larger deposit reduces the loan amount and often brings you back under the threshold.

In our experience, borrowers who assume investor lending works the same as their first home purchase find out late in the process that the deposit they set aside is not enough once you account for the tighter assessment and the need to show genuine savings or equity rather than a short-term cash injection.

Genuine Savings and Where Your Deposit Needs to Come From

Lenders want to see that your deposit has been in your account for at least three months before application. Money that appears suddenly, whether from a personal loan, a gift that was not disclosed, or a recent transfer from an offset account that was not previously there, raises questions about your ability to save and manage repayments.

Consider someone in Swansea who has been renting near Marks Point and saving steadily through a combination of salary and rental income from a property they already own interstate. That borrower can show a clear trail of funds and a history of meeting financial commitments. A lender will accept that deposit without question. On the other hand, someone who borrows from family or consolidates credit cards into a lump sum two months before applying will be asked to prove the source and may be declined if the explanation does not satisfy the credit policy.

Equity from an existing property is treated differently. If you own your home outright or have paid down a significant portion of the loan, you can often use that equity as your deposit without needing to show cash savings. The lender values your current property, calculates how much you can access while staying within their lending limits, and structures the new loan accordingly. This is common for buyers adding a second or third property to their portfolio.

What Happens When You Borrow With Less Than 20 Per Cent Down

Lenders Mortgage Insurance becomes payable when your deposit is below 20 per cent. The premium is calculated on a sliding scale based on loan size and loan-to-value ratio, and it is added to your loan amount or paid upfront. For an investor loan, the premium is higher than for an owner-occupier loan at the same LVR because the lender views the risk as greater.

LMI does not protect you. It protects the lender if you default and the property sells for less than the outstanding loan balance. You remain liable for any shortfall, and you have paid a premium for cover that offers you no direct benefit. The decision to proceed with a smaller deposit needs to weigh the cost of LMI against the opportunity cost of waiting another year or two to save the full 20 per cent.

If you borrow at 90 per cent LVR and the property is in an area where lenders apply postcode-based restrictions, such as locations with high vacancy rates or oversupply of units, you may find that only a handful of lenders will consider the application at all. Swansea itself is not typically on lender restriction lists, but postcodes further north around the Central Coast can be, and brokers often see borrowers surprised that their deposit size and location together create a lending problem that neither factor would cause on its own.

How Deposit Size Affects Your Borrowing Power

A larger deposit reduces the loan amount, which improves your serviceability position. Lenders assess your ability to repay using a buffer rate at least three percentage points above the actual loan rate, and they apply strict limits on how much of your income can go toward debt repayments each month.

If you are self-employed, run a business with fluctuating income, or earn part of your income through commissions or bonuses, lenders take a more conservative view of what you can afford. A deposit of 30 per cent instead of 20 per cent can be the difference between an approval and a decline, not because the lender doubts your commitment but because the lower loan amount brings your monthly repayment comfortably within their serviceability cap.

We regularly see this with buyers who want to hold the loan on an interest-only basis for the first few years to manage cash flow while they renovate or wait for capital growth. Interest-only loans attract even tighter assessment than principal-and-interest loans, and under the prudential standards, a long-term interest-only loan at an LVR above 80 per cent is classified as non-standard. That classification limits your options and often rules out the lender you were hoping to use.

Using Equity to Fund Your Investment Deposit

If you own property already, you can access equity without selling or disrupting your current loan structure. The lender orders a valuation, calculates 80 per cent of the property value (or sometimes less depending on postcode and property type), subtracts what you owe, and tells you how much you can borrow.

For example, if your home in Swansea is worth $750,000 and you owe $300,000, a lender will typically let you borrow up to $600,000 in total across both loans, leaving you with $300,000 in accessible equity before accounting for costs. That equity can cover the deposit and purchase costs for your investment property, leaving your cash savings untouched for other purposes like renovations or holding costs during a vacancy period.

The catch is that your total borrowing must still meet the lender's borrowing capacity assessment. Accessing equity increases your overall debt, which increases your monthly repayment obligation and reduces how much further credit you can take on. If you are close to your serviceability limit already, the amount of equity you can actually use might be lower than the amount technically available.

Investment Property Deposits and the Negative Gearing Changes

From July next year, rental losses on residential properties purchased after May this year can no longer be offset against salary or wage income. Losses are quarantined and can only be used against future rental income or capital gains on residential property. Properties bought before that date, or eligible new builds, are exempt.

This does not change the deposit you need, but it changes the cash flow equation after settlement. If you were planning to rely on negative gearing to reduce your taxable income and improve your after-tax position, that strategy no longer works for new purchases unless you buy a qualifying new build. Your deposit size should account for the fact that you will be carrying the full rental loss each year without a tax offset, which means you need a bigger buffer to cover vacancies, maintenance, and periods where rental income falls short of the loan repayment.

We have had conversations with buyers in Swansea who planned to purchase an older unit near the lake foreshore and negatively gear the holding costs while they waited for capital growth. Under the new rules, that plan leaves them financially exposed unless they adjust their deposit upward or reconsider the property type.

Deposit Requirements for New Builds and Off-the-Plan Investment Property

Lenders treat new builds and off-the-plan purchases differently to established property. You typically pay the deposit in stages as construction progresses, and the lender does not provide final approval or release funds until the property reaches practical completion and is valued.

The risk with off-the-plan is that the market value at completion can fall short of the contract price, especially if the development takes longer than expected or if the local market softens. If the lender's valuation comes in below the purchase price, you will need to make up the shortfall with additional cash or accept a smaller loan and higher LVR. Some lenders will not finance off-the-plan purchases at all, and others apply a maximum LVR of 80 per cent regardless of deposit size.

New builds do offer some advantages under the current tax rules. They remain eligible for negative gearing even after July next year, and depreciation schedules are higher for new property than for older stock. If you are buying in Swansea and considering a new townhouse development rather than an established home, the deposit requirement might be similar, but the lending appetite and long-term tax treatment differ significantly.

What to Have Ready Before You Apply

Your deposit needs to be verified and sitting in an account under your name for at least 90 days before the lender will accept it. You will also need to show three months of transaction statements for every account you hold, payslips covering the most recent two or three months, tax returns if you are self-employed, and rental income evidence if you already own investment property.

Lenders calculate rental income at 80 per cent of the lease amount to account for vacancies and management costs, so if your investment property generates $500 per week in rent, the lender will only credit you with $400 per week when they assess your serviceability for the next purchase. If you have just bought your first investment property and the lease has not started yet, some lenders will accept a signed lease agreement, while others will not include the rental income at all until you can provide evidence of three months of payments received.

You also need to budget for costs beyond the deposit itself. Stamp duty in New South Wales is calculated on the purchase price and is payable by investors at the standard rate without access to first home buyer concessions. Legal fees, building and pest inspections, and lender application fees add another few thousand. A building insurance policy is required from settlement, and if you are buying a unit, you will need to pay the first quarter of strata levies upfront. Refinancing an existing loan to release equity might also involve discharge fees and break costs if you are exiting a fixed rate early.

Call one of our team or book an appointment at a time that works for you. We will run the numbers on your deposit, walk you through what each lender requires, and help you structure the loan so it fits your broader property and tax strategy without leaving you stretched after settlement.

Frequently Asked Questions