Model Your Investment Loan With Precision

Compute monthly repayments, total interest paid, loan-to-value ratio, and monthly cashflow after debt service — for any property loan scenario.

Monthly Repayment
Total Interest Paid
Total Repayment
Loan-to-Value (LVR)
Monthly Cashflow
Annual Cashflow
Cashflow Status

How Each Metric Is Computed

Monthly Repayment

Calculated using the standard amortisation formula. Assumes principal-and-interest repayments at a fixed rate for the full term.

  • Fixed rate assumed
  • Full P&I amortisation
  • No offset or redraw modelled

Loan-to-Value Ratio

LVR is the loan amount divided by property value. Lenders typically require LVR below 80% to avoid mortgage insurance.

  • Below 80% — standard lending
  • 80%–90% — LMI likely applies
  • Above 90% — specialist lending

Monthly Cashflow

Net cashflow is rental income minus operating expenses minus the monthly mortgage repayment. Positive cashflow indicates a self-funding property.

  • Positive = income exceeds costs
  • Negative = top-up required
  • Excludes tax treatment

Mortgage Tool Questions

Does this account for interest-only periods?

No. The calculator assumes full principal-and-interest repayments from the start. Interest-only modelling requires a separate calculation.

Is LMI (Lenders Mortgage Insurance) included?

LMI is not factored into repayments. The LVR result will indicate whether LMI likely applies, but the premium varies by lender and loan size.

What does negative cashflow mean for tax?

Negative cashflow on an investment property may be tax-deductible in some jurisdictions (negative gearing). Consult a tax professional for your specific situation.

Can I use this for commercial property?

Yes. The arithmetic is identical for commercial loans. Note that commercial lending typically has different LVR thresholds and rate structures.

We use cookies to improve your experience. Privacy Policy