Tax‑Deductible Rental
Turn rent income and deductible expenses into a simple tax base estimate.
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Rental inputs Global Maths
Enter rental income and deductible expenses in time frame frequency of your choice.
Rent income amount
$
Deductible expenses amount
$
  • For example: interest on home loan repayments (rental property), council rates, insurance, etc.

  • Enter only what your local rules treat as deductible for this property.
Estimated tax rate (optional)
%
Input your tax rate to show a rough tax ammount payable or tax saving for this property.
How to use this:
  • Step 1: Work out your yearly rent from this property.
  • Step 2: Add up expenses you believe are deductible under your local rules.
  • Step 3: Enter both and check the tax base before local tax calculations.
Tax base summary
  • Your tax base is your yearly rent minus your deductible expenses, showing whether this property is a taxable profit or a deductible loss before local rules.
Yearly amounts
Rent (per year) —
Deductible expenses (per year) —
Estimated tax base —
Rough tax view (optional)
Tax rate applied —
Tax on positive base —
Saving from negative base —
Quick read —
Explanation & disclaimer
This tool does maths only and does not decide what is deductible.
Show calculation details & disclaimer
How the calculation works
  • Convert rent to a yearly amount based on the weekly/monthly/yearly toggle you chose.
  • Convert deductible expenses to a yearly amount using the same idea.
  • Estimated tax base = Yearly rent − Yearly deductible expenses.
  • If the base is positive, it represents net taxable rent before your local tax rules.
  • If the base is negative, it represents a net loss that may or may not be deductible depending on your system.
  • If you enter a tax rate, the tool multiplies the base by that rate to show a rough tax payable (positive base) or a rough tax saving (negative base).
Important disclaimer
  • This tool never decides what is deductible; it only does the arithmetic you tell it to do.
  • Deductibility rules vary widely between countries and property types.
  • Always check official guidance in your country or speak to a qualified tax professional before relying on these numbers.