Positive Cash Flow Property: A Verifiable Assessment Worksheet

A property is cash-flow positive for a stated period only when cash received from it exceeds every cash payment counted in the analysis. That result depends on the actual rent, vacancy, ownership costs, loan and time period. It is not a permanent feature of a suburb, property type or advertised gross yield.

Define the result you are measuring

Use labelled calculations so different assumptions are not mixed:

• Gross rent: rent for the period before vacancy and expenses.
• Gross yield: annualised gross rent divided by the chosen price or value. State which denominator and date you used.
• Operating cash flow before finance: cash rent received less cash operating expenses.
• Cash flow after finance: operating cash flow less interest, principal and loan charges paid during the period.
• Taxable rental result: assessable rental income less deductions allowed under the tax rules for that income year.
• Total investment return: income and realised change in value after acquisition, holding, finance, sale and tax effects. A current cash surplus does not establish this result.

Verify rental income

Do not use the selling agent's “potential rent” as the only income case. Obtain the current lease and ledger for a tenanted property, and an independent written appraisal supported by comparable rentals. Confirm whether quoted rent includes furniture, utilities, parking or other items.

For an annual cash model, state each input:

Expected cash rent = contracted or supportable weekly rent × occupied weeks + other rental receipts

Use an explicit vacancy period, letting transition and arrears assumption. ASIC Moneysmart's investment-property guidance warns that rent may not cover the mortgage and that owners may have to meet costs while the property is vacant.

Build the expense schedule

Replace percentages and national averages with documents for the property:

• council rates and water charges, including who pays usage;
• land tax based on the owner, jurisdiction and total taxable holdings;
• building, landlord and contents insurance quotes and excesses;
• property-management, letting, inspection and tribunal fees in the proposed agreement;
• strata or body corporate levies, special levies and proposed works;
• known repairs, compliance work and a separately stated contingency;
• utilities or services paid by the owner;
• accounting, legal and other administration costs.

Do not count the same cost twice—for example, separately adding building insurance already funded through a scheme levy. Do not omit a cost merely because its tax treatment is uncertain.

Model finance separately

Use the lender's proposed amount, rate, fees, repayment type and term. Separate interest from principal in the cash model. If the loan has an interest-only period, show both that period and the scheduled repayment after it ends. Moneysmart's interest-only loan guide explains that the balance does not reduce during the interest-only period and repayments rise when principal repayments begin.

A larger cash contribution can improve property-level cash flow because less is borrowed, but that does not prove a better investment return. It changes leverage, liquidity and how much personal capital is at risk. ASIC Moneysmart describes borrowing to invest as a high-risk strategy and recommends assessing whether all costs can still be met if investment income stops.

Stress-test the cash flow

Create separate scenarios rather than quietly changing the base case:

• a longer vacancy and a lower achieved rent;
• a higher interest rate and the end of any fixed or interest-only period;
• an insurance increase or large excess;
• an urgent repair or approved special levy;
• a period in which the property cannot lawfully be rented;
• selling costs and a sale price below the outstanding loan and transaction costs.

Record the source and date of every base-case input. The break-even rent is arithmetic, not a forecast:

Break-even weekly rent = total annual cash outgoings ÷ expected occupied weeks

If the resulting rent is not supported by current comparable leases, labelling the property “positive cash flow” is not defensible.

Reconcile with the tax result

The ATO's residential rental property hub explains that rental income must be declared and that deductions generally require the property to be rented or genuinely available for rent. Its rental-expense guidance separates expenses that may be immediately deductible from borrowing expenses, depreciating assets and capital works claimed over time. Private and capital costs are not simply immediate rental deductions.

Interest deductibility depends on how borrowed money is used, not the label on the loan or the property securing it. Depreciation and capital-works rules also depend on the asset and history. Have a registered tax agent prepare the tax reconciliation; do not estimate a tax refund as certain cash flow.

Evidence to keep

• lease, rental ledger and independent appraisal;
• loan proposal and repayment schedule;
• rates, water, insurance and management documents;
• scheme financial records and special-levy information;
• inspection reports and repair quotations;
• planning and tenancy compliance evidence;
• the dated worksheet showing the base and stress cases.

First-time investors can use the investment due-diligence sequence before applying this cash-flow worksheet to a candidate property.

General information and arithmetic only, not personal financial, credit, tax, legal or investment advice. Reviewed 24 August 2026. Inputs and tax rules depend on the investor, property, loan and income year.