What is rental property cash flow?
Rental property cash flow is the cash left from rental income after the costs included in the scenario. This calculator starts with scheduled rent, allows for vacancy, adds other rental income and subtracts owner-paid property and management costs.
The main result is operating cash flow before finance. If the optional finance section is enabled, a second result subtracts mortgage interest, principal repayments and other finance costs without changing the operating result.
How the calculator works
Every input is converted to an annual amount. Scheduled rent is reduced by the vacancy percentage, other recurring rental income is added, and disclosed annual operating costs are subtracted. Monthly figures are annual results divided by 12, so they are averages rather than a bill-by-bill forecast.
| Result | Calculation |
|---|---|
| Gross rental income | Rent amount × selected annual frequency |
| Effective rental income | Gross rental income + other rental income − vacancy loss |
| Operating cash flow | Effective rental income − operating property and management costs |
| Cash flow after finance | Operating cash flow − entered interest, principal and other finance costs |
What rental income to include
Use the rent in the agreement or a scenario you are evaluating. Other rental income should be recurring income connected with the property that you reasonably expect to receive. Do not treat refundable bonds, borrowed money or one-off sale proceeds as rental income.
What property expenses to include
Australian Government guidance identifies ongoing investment-property costs such as council and water rates, insurance, body-corporate charges, land tax, property-management fees, repairs and maintenance. The ATO also lists categories such as advertising, cleaning, gardening, utilities, lease expenses and pest control. That does not mean every category applies to every property or has a particular tax treatment.
For insurance, use owner-paid building or landlord cover rather than renter contents insurance. If a strata or body-corporate levy includes building insurance or utilities, do not enter the included amount again. Owner-paid utilities should contain only costs the owner is responsible for under the actual arrangement.
Vacancy costs
Vacancy represents scheduled rent that is not received. Five per cent is about 2.6 weeks in a 52-week year. A percentage is only a scenario: consider the property, lease dates, likely turnover and current local evidence, then test more than one assumption rather than relying on a universal rate.
Property management and leasing costs
Choose self-managed, a traditional property manager or another arrangement, then enter the fees that actually apply. Separate recurring management charges from advertising, letting or lease fees and renewal or administration fees so the breakdown remains useful.
RentSeekr supports self-management workflows; it is not a traditional property manager. The cash-flow tool does not insert RentSeekr pricing or compare RentSeekr with an agent. Use the separate Savings Calculator for that question.
Finance costs
Finance is optional because a property can be assessed on its operating performance separately from its owner’s loan structure. Interest and other finance costs are cash outflows. Principal repayments also reduce available cash, but they are not labelled as an operating expense or rental profit measure here. This calculator does not determine deductibility, loan affordability or financing suitability.
Cash flow vs rental profit
Cash flow describes money moving in and out during the scenario. Rental profit for accounting or tax purposes can use different classifications and timing. Capital work, depreciation, tax, property-value changes and buying or selling costs are deliberately outside this tool, so do not use the result as a tax return figure or investment-return measure.
Example calculation
At $600 weekly rent, 3% vacancy and $10,000 of annual operating expenses, scheduled rent is $31,200, vacancy-adjusted income is $30,264 and estimated annual operating cash flow is $20,264. This is an illustration, not a forecast.
Limitations
- The result is only as complete as the figures and assumptions entered.
- Vacancy, maintenance and major repairs are uncertain and may not occur evenly.
- A monthly average does not show when rent or large bills are received or paid.
- The tool does not calculate tax, negative gearing, depreciation, yield or investment return.
- Property type and jurisdiction tailor explanatory guidance only; they do not invent costs or legal rules.
- Legal repair, safety and tenancy obligations apply regardless of the estimate.
Frequently asked questions
How do I calculate rental property cash flow?
Annualise scheduled rent, add relevant recurring rental income, subtract an allowance for vacancy, then subtract owner-paid operating costs. If you choose to add finance, subtract those cash movements separately from operating cash flow.
Does this calculator include mortgage repayments?
Mortgage interest, principal repayments and other finance costs can be entered in the optional finance section. They are shown in cash flow after finance and do not alter the operating cash-flow result. The tool does not assess tax treatment.
What rental property expenses should I include?
Enter costs you expect to pay as owner, which may include insurance, council and owner rates, owner-paid utilities, strata or body-corporate levies, land tax, maintenance, gardening, pool care, pest control, cleaning, management and leasing costs. Use zero when a cost does not apply and avoid double-counting.
Should landlord insurance include tenant contents insurance?
No. Enter owner-paid building or landlord cover relevant to the property, not a renter’s contents insurance. Check whether building cover is already included in strata or body-corporate levies before adding both.
Should I include body corporate costs and owner-paid utilities?
Include strata or body-corporate levies when they apply, and include only utility costs the owner expects to pay. Review the levy budget and utility responsibilities so the same amount is not counted twice.
Is positive rental cash flow the same as rental profit?
No. This is a cash-flow scenario based on entered values. Timing, tax, depreciation, capital expenditure, acquisition and sale costs, and changes in property value are outside the calculation.
What vacancy rate should I use?
Use a scenario you can support from the property and market context, then test a higher-vacancy case. RentSeekr does not provide a universal vacancy forecast.
Does RentSeekr save my calculator inputs?
No. This public calculator runs in your browser without an account and does not save the values you enter.
Sources and further information
Official guidance changes. Check the source for the current rule in your jurisdiction.