Tax Deductions & Negative Gearing Calculator

Maximise your rental property tax deductions and understand the impact of negative gearing over time. This free Tax Deductions & Negative Gearing Calculator by Propmax.com.au helps Australian investors project after-tax cashflow, loan costs, depreciation, and equity over 30 years. No spreadsheets needed — just clear, accurate financial forecasting tailored to your rental strategy.

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30-Year Investment Property Cashflow Forecasting

Plan with precision. Use our free cashflow calculator to forecast rental income, expenses, equity, and loan impact over 30 years. Built for Australian investors.

  • Interactive 30-year investment property cashflow calculator
  • Visual breakdown of income, outgoings, and capital growth over time
  • Includes equity tracking and principal vs interest repayment flows
  • See cashflow at weekly, monthly, or annual levels
Feature 1

Loan & Repayment Scenario Modelling

Compare interest-only vs principal-and-interest loan types and explore extra repayments or equity release strategies.

  • Loan calculators for IO, P&I, offset and redraw scenarios
  • Visualise interest savings with extra repayments
  • Equity growth forecasting and cash-out potential
  • Built-in repayment timeline and cost breakdowns
Feature 2

Property Depreciation & Tax Benefit Estimator

Estimate depreciation deductions and negative gearing benefits with ATO-compliant calculations.

  • ATO-aligned building and fixture depreciation calculator
  • Immediate vs long-term deduction forecasting
  • See impact on taxable income and net cashflow
  • Factor in property age, build cost and low-value pools
Feature 3

Export Reports as Spreadsheets or PDFs

Export your full property cashflow analysis as Excel (CSV/XLSX) or PDF reports for brokers, partners or tax agents.

  • Download full investment property cashflow spreadsheet
  • Bank-ready PDF reports with income, equity and ROI breakdowns
  • Summarise cashflow and capital growth year-by-year
  • Perfect for loan applications, planners and client handouts
Feature 4

Frequently Asked Questions