What Is Rental Yield and How Do Lenders Use It?

Rental yield is one of the key numbers for judging how much of a property's cost the rent can cover. Upper Swan investors who understand it before applying for an investment loan buy with clarity and build momentum faster.

Rent pays a loan, and yield measures how hard that rent is working.

What Is Rental Yield and How Is It Calculated?

Rental yield is the yearly rent from a property shown as a percentage of its value. Gross yield divides annual rent by the purchase price. Net yield first subtracts costs such as council rates, insurance, property management fees, repairs and any body corporate levies.

Gross yield is useful for comparing properties quickly. Net yield shows the return after property operating costs but before loan repayments and tax. For cash flow, also account for loan repayments and the tax position. A vacancy rate matters here too, because weeks without a tenant reduce the rent you actually collect across the year.

How Do Lenders Count Rental Income on an Investment Loan?

Banks and other authorised deposit-taking institutions generally count no more than 80 per cent of expected rent when assessing an investment loan application. APRA regards a minimum 20 per cent haircut on expected rent as prudent, to allow for periods when the property is empty.

Those same lenders must also test your ability to repay at a rate at least 3.0 percentage points above the loan's actual rate. Non-bank lenders are not bound by that buffer, but each lender still sets its own credit policy. How a lender treats a rental appraisal for a property you have not yet bought is a matter for that lender, so ask before you commit to a purchase.

Your borrowing capacity therefore depends on more than the rent. Your income, existing debts and living expenses all feed into the result.

Rental Yield Against Loan Interest: A Worked Example

When the rent per $100,000 of value is less than the interest on the amount borrowed against it, the rent alone will not cover the interest. At 80 per cent LVR and 6.75 per cent, that break-even gross yield is 5.4 per cent. The gap is easy to see if you work with every $100,000 of property value.

Consider a buyer weighing up an investment property with a gross yield of 5 per cent. This figure is illustrative. Per $100,000 of value, the rent is $5,000 a year. The buyer borrows 80 per cent, which is $80,000. At an illustrative rate of 6.75 per cent, the yearly interest is $5,400. That leaves a shortfall of $400 per $100,000 of value, before rates, insurance, management fees and repairs.

The lender's view is tougher. As a simplified interest-only illustration, it counts 80 per cent of the rent, which is $4,000. At an assessment rate 3 percentage points higher, 9.75 per cent, the interest on $80,000 is $7,800. That is a $3,800 gap. Lenders actually assess principal and interest repayments, so the real assessed shortfall is larger, and rent is only one input into overall serviceability alongside your total income, commitments and living expenses.

The buyer's solution is to run the numbers across the full purchase price using the mortgage repayment calculator, then compare it with a higher-yielding option. The outcome is a clear choice. Either the buyer is comfortable funding the shortfall from salary, or they shift towards a property where the rent covers more of the cost. Both are informed decisions rather than hopeful ones.

Interest Only Lowers Repayments but Not Your Borrowing Power

An interest-only period lowers your repayments for a set time, but it does not increase how much you can borrow. APRA expects lenders to assess interest-only loans on principal and interest repayments over the remaining term after the interest-only period ends.

For example, a 30-year loan with a 5-year interest-only period is assessed over the remaining 25 years. That usually means a lower maximum loan than an equivalent principal and interest loan. The trade-off is that your balance does not fall during the interest-only period, so you owe the same amount when repayments change. You can read more about interest only loans and whether the structure suits your property investment strategy.

Negative Gearing Changes for Properties Bought After 12 May 2026

Rental losses on an established property bought after 7:30pm AEST on 12 May 2026 can only be deducted against residential property income from the 2027-28 income year. Properties held at that time, and eligible new builds, keep the current treatment, where losses can be deducted against other income.

Interest on money borrowed to buy a rental property is deductible, but only the interest portion of a principal and interest repayment is. The principal portion is not. A low-yield purchase that relies on a salary offset now needs closer scrutiny. From 1 July 2027, the 50 per cent CGT discount is also replaced by cost base indexation and a 30 per cent minimum tax on real gains accruing from that date. Please speak with your accountant about how these rules apply to your situation, because tax outcomes depend on your circumstances.

Rental Yield and Your Loan Structure

Yield also influences which loan structure makes sense. A property with a stronger yield may leave more room in your budget. A low-yield established property bought after 12 May 2026 may not be able to use its losses against salary from 2027-28, and it carries more holding risk if rates rise or the property sits vacant. Seek tax and licensed advice before you decide.

If you already own an investment property, a review of your existing loan can show whether your structure still fits. Our investment loan refinance service looks at your current loan against your yield and goals. If you are buying for the first time, buying your first investment property outlines how the process works.

Ready to put a number on your next move? Our Upper Swan team can compare investment loan options from lenders across Australia and match a structure to your yield and goals. Call one of our team or book an appointment at a time that works for you.

Frequently Asked Questions