What are Investment Loans for Property Portfolios?

An investment loan for a property portfolio is structured lending that allows you to acquire and hold multiple rental properties simultaneously.

Northcote investors building portfolios face specific challenges in this market. Properties in established inner-north suburbs typically trade at higher values, which affects how much equity you can access and how lenders assess your capacity to service multiple loans. Recent Federal Budget changes to negative gearing and capital gains tax from mid-2026 onwards have also shifted the timing and structure decisions investors need to make when expanding beyond a single property.

How Lenders Assess Portfolio Borrowing Capacity

Lenders calculate your borrowing capacity by assessing rental income at a discounted rate, typically applying a shading factor between 70% and 80% of the actual rent received. They also include a vacancy rate assumption, often around 4-5%, and assess your ability to service loans at an interest rate buffer above the actual rate.

Consider an investor who owns a two-bedroom unit in Northcote generating rental income. When applying for a second investment loan, the lender will not count the full rental amount as income. If the property rents for $2,600 per month, the lender might assess it at $2,080 after shading and further reduce it to account for potential vacancy periods. The investor must also demonstrate they can service both the existing and proposed loan at a higher assessment rate, typically 2-3% above the actual rate. This creates a gap between what you earn and what lenders recognise, which directly limits how many properties you can hold before hitting a servicing ceiling.

Loan to Value Ratios Across Multiple Properties

Your loan to value ratio determines how much you can borrow against each property and how much Lenders Mortgage Insurance you might pay.

Most lenders cap investment loans at 90% LVR, but staying at or below 80% LVR helps you avoid LMI and often unlocks better interest rate discounts. When you hold multiple properties, lenders assess the combined exposure. If your first Northcote property has increased in value since purchase, you can leverage that equity to fund the deposit for a second property without selling or drawing on cash savings. For example, if your property was purchased several years ago and has appreciated, a valuation might show enough usable equity to provide a 20% deposit on another property while keeping your overall portfolio LVR within acceptable limits. Lenders will reassess the entire portfolio each time you apply for additional lending, so managing LVR across all holdings becomes central to sustained growth.

Interest Only Versus Principal and Interest for Portfolio Investors

Interest-only repayments reduce monthly outgoings and improve cash flow, particularly when holding multiple properties with negative gearing.

Investors typically choose interest-only periods of up to five years to maximise tax-deductible interest and preserve capital for further acquisitions. Once the interest-only period ends, the loan reverts to principal and interest unless you refinance your investment loan or request an extension. Lenders assess extensions based on your current equity position and servicing capacity, and approval is not automatic. In practice, we regularly see portfolio investors refinancing at the end of each interest-only term to reset the period and maintain cash flow, especially when preparing to acquire the next property. The decision between interest-only and principal and interest also affects your borrowing capacity, as principal and interest repayments are higher and reduce how much lenders will approve for subsequent purchases.

Fixed Rate and Variable Rate Allocation in a Portfolio

Splitting your loans between fixed and variable rates can provide stability on some holdings while retaining flexibility to make extra payments or access offset accounts on others.

A common approach is to fix a portion of your portfolio to lock in repayments and protect against rate rises, while keeping a portion variable to allow for redraw, extra repayments, or offset functionality. If you hold three investment properties, you might fix two at a rate that provides certainty over a two or three-year period, and leave one variable to retain the option of paying down principal or accessing funds if needed. Fixed rates typically do not allow offset accounts, and breaking a fixed rate early can incur significant costs, so the allocation depends on whether you plan to sell, refinance, or significantly alter your portfolio structure during the fixed period. Variable rates fluctuate with market conditions, but they also allow you to take advantage of falling rates without penalty.

How Recent Tax Changes Affect Portfolio Timing and Structure

From 1 July 2027, the Federal Budget changes to negative gearing and capital gains tax apply to established residential properties acquired after 12 May 2026.

If you purchased an established property in Northcote or surrounding suburbs before Budget night in May 2026, the existing tax treatment continues. Properties acquired after that date will have negative gearing losses quarantined to offset only against residential property income or capital gains, not against wage income. Capital gains will also be subject to a minimum 30% tax and indexed to inflation rather than the current 50% discount. Investors purchasing new builds retain the choice between the old and new CGT arrangements, which maintains the incentive to consider new construction. For portfolio investors, this means the structure and timing of acquisitions now carries different tax outcomes depending on whether properties are established or new, and whether they were acquired before or after the Budget announcement. The carryforward of losses is still available, so deductions are deferred rather than lost, but the immediate tax benefit is reduced for established properties acquired recently.

Using Equity Release to Fund Further Acquisitions

Equity in your existing properties can be accessed without selling by increasing the loan amount or establishing a separate line of credit secured against the property.

Northcote properties have experienced growth over the past decade, and established investors often hold significant equity. Releasing equity involves a revaluation, and lenders will approve an increase based on the updated value and your current servicing capacity. For example, if your property is now valued higher than at purchase and your loan balance has reduced, you might access enough equity to cover a 20% deposit and associated costs for another property without needing to save additional cash. This approach allows you to scale your portfolio faster, but it also increases your total debt and raises the servicing requirement across all loans. Lenders assess the combined loan exposure, so the amount you can release is limited by both the LVR on each property and your ability to service the higher total loan amount. A borrowing capacity assessment before applying will clarify how much equity is practically available.

Maximising Tax Deductions Across a Portfolio

Investment property expenses are generally tax-deductible, including loan interest, property management fees, body corporate levies, insurance, repairs, and depreciation.

For investors holding multiple properties, the ability to claim these expenses against rental income reduces taxable income and improves after-tax cash flow. Loan interest remains the largest deductible expense, which is why interest-only loans are common in portfolio structures. Depreciation schedules prepared by a quantity surveyor can also unlock significant deductions on building and fixture wear over time, particularly for newer properties. Claimable expenses must relate directly to earning rental income, so costs incurred during periods when the property is not tenanted or is used for private purposes are not deductible. From July 2027, investors who purchased established properties after May 2026 will only be able to offset those losses against residential property income, so the value of these deductions shifts depending on your total portfolio income and when each property was acquired. Speaking with an accountant who understands investment property tax is recommended to ensure you are claiming correctly and planning for the changes ahead.

Choosing the Right Lender for Portfolio Growth

Not all lenders assess portfolio investors the same way, and some have policies that accommodate multiple properties while others cap exposure or apply stricter servicing buffers.

Major banks, regional lenders, and non-bank lenders each have different appetites for portfolio lending. Some lenders will allow you to hold five or more properties, while others may decline further lending after two or three. Policy differences also extend to how rental income is shaded, whether they allow interest-only extensions, and how they assess borrowing capacity when you are already holding significant debt. Working with a mortgage broker in Northcote who has access to a wide panel of lenders means you can compare investment loan options and match your portfolio strategy to a lender whose policies support your growth plans. We regularly see investors hit a servicing wall with one lender, only to find another lender will approve the next acquisition based on a different assessment method or rental income treatment.

Call one of our team or book an appointment at a time that works for you to discuss your portfolio structure, assess your current equity position, and identify which lenders and loan features align with your investment goals.

Frequently Asked Questions