Investment Property Tax Calculator

Enter the Rental Workpaper

This investment property tax calculator compares your client’s income tax with and without the property’s annual rental result. Enter whole-property rent and cost pools, then the client’s ownership share. Enter other taxable income for that client alone.

Use actual rent received, including short-stay receipts. Other cash costs exclude interest, depreciation and loan principal. Include only costs eligible for an immediate deduction before applying the entered rental-use percentage.

Reconcile receipts, invoices and loan statements first. Establish legal ownership, genuine availability for rent and any private use. The ATO rental properties guide explains deduction eligibility and record keeping.

Rental Profit or Loss

The taxable rental result is rent less eligible costs, interest and the supplied depreciation deduction, multiplied by ownership share. The rental-use percentage reduces those deductions before ownership is applied.

The calculator adds that result to other taxable income and compares the two income-tax estimates. Both use full-year Australian resident rates and the low income tax offset. The supported income years are 2024-25 and 2025-26.

The resident income-tax schedules set the marginal rates. A rental deduction saves tax at the rates it removes from the calculation. The tax saving can change when income crosses a bracket or offset threshold.

A negative result is a rental loss. When deductible expenses exceed rent, the loss can reduce other taxable income. Income tax stops at zero. The separate excess-loss figure needs a tax-loss assessment before any later-year claim.

Incorrect: a $4,300 rental deduction guarantees a $4,300 refund. Correct: in the default example, the $4,300 loss reduces income tax by $1,290. An eventual refund also depends on withholding, other liabilities and offsets.

The comparison excludes Medicare levy and surcharge, study repayments and offsets other than the low income tax offset. It covers resident individuals with the full tax-free threshold. It does not calculate a lodged return’s refund.

Cash Costs and Tax Deductions

Depreciation reduces taxable rental income without a cash payment in this annual comparison. Enter a supported deduction from the asset records or depreciation schedule. The calculator does not prepare that schedule or establish entitlement.

Loan principal reduces cash without reducing taxable rent. Interest belongs in its separate pool. Remove any interest on private borrowings before entering the pool, even when the rental property secures the loan.

After-tax annual cash equals rent less cash costs, interest and principal, multiplied by ownership share, then reduced by the income-tax change. Cash costs include the full entered pools, including their private portion. Depreciation stays out of cash.

A Rental Scenario Compared

In the fictional 2025-26 default, a client owns 50% of a conventional rental and has $100,000 of other taxable income. Whole-property rent is $31,200. Other cash costs are $6,800, interest is $29,000, depreciation is $4,000 and principal is $3,600. Eligible rental use is 100%.

The client’s rental loss is $4,300. Income tax falls from $20,788 to $19,498, a $1,290 saving. Their cash position before the tax change is -$4,100. After the saving, the annual cash position is -$2,810.

Change rent alone to $46,800 for a fictional profit scenario. The client’s taxable rental profit becomes $3,500 and income tax rises by $1,050. Cash before the tax change is $3,700, leaving $2,650 after tax. Keep each scenario’s inputs with its result in the workpaper.

Rental Income and Private Use

For a mixed-use rental, enter a supported eligible rental-use percentage. Actual rent remains fully included before ownership. The percentage applies equally to other costs, interest and depreciation, so first separate pools with different eligibility.

Where each cost needs a different percentage, apportion each pool in the workpaper and enter 100% rental use. Cash then includes only those entered pools. Add excluded private cash costs separately when assessing the client’s total cash commitment.

For a fictional Airbnb example, use $24,000 rent, $6,000 other costs, $18,000 eligible interest and $2,000 depreciation before apportionment. Enter 60% eligible rental use, 50% ownership, zero principal and $100,000 other taxable income for 2025-26.

The client’s taxable rental profit is $4,200 and income tax increases by $1,260. Their share of rent equals their share of entered cash costs, so after-tax cash is -$1,260. Apply the ATO’s private-use and genuine-availability rules before choosing 60% for an actual client.

Use the property cash-flow calculator for holding-cash forecasts and repayment timing, or assess disposal with the capital gains tax calculator. Entries stay on your device and are not saved by this calculator.