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Property Tax Assessment Calculator

Work out property tax assessment instantly with clear inputs, formula shown and shareable results.

About Property Tax Assessment Calculator

Under the annual rateable value system, tax is a percentage of a notional annual letting value, itself derived from built-up area times a notified rate for the locality and building type. Rebates for self-occupancy, early payment, building age or senior citizenship are applied to the gross demand.

Formulas

Rateable value

ARV = built-up area x notified annual rate per ft²

Tax

Tax = ARV x tax rate x (1 - rebates)

Worked example

With the default values below, Property Tax Assessment Calculator returns Annual property tax of $3,240.00. Change any input above and every figure here is recalculated in your browser.

Inputs used

Built-up areaminimum 0.1 ft²
1,200 ft²
Annual rateable rateminimum 0 per ft² per year
12 per ft² per year
Property tax rateaccepts 0.1–100 %
25 %
Rebate for early payment or self occupancyaccepts 0–60 %
10 %

Results

Annual property tax
$3,240.00
Annual rateable value
$14,400.00
Rebate applied
$360.00
Half yearly instalment
$1,620.00

Step by step

  1. 1Values used
  2. 2Rateable value
  3. 3Tax
  4. 4Annual property tax= 3,240.00
  5. 5Annual rateable value= 14,400.00
  6. 6Rebate applied= 360.00
  7. 7Half yearly instalment= 1,620.00

Assumptions and limits

  • The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation or fees or charges into account.
  • Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
  • Preliminary estimate only. Property tax bases, rates and rebates vary by municipality and must be confirmed with the local authority.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Preliminary estimate only. Property tax bases, rates and rebates vary by municipality and must be confirmed with the local authority.

Frequently Asked Questions

How is the Property Tax Assessment figure worked out?

ARV = built-up area x notified annual rate per ft². Under the annual rateable value system, tax is a percentage of a notional annual letting value, itself derived from built-up area times a notified rate for the locality and building type.

What is the alternative to the rateable value system?

Capital value based assessment, where tax is a percentage of market or guidance value. It tracks property prices more closely but produces sharper increases on revaluation.

What values do I need to enter?

This calculator takes 4 inputs: Built-up area, Annual rateable rate, Property tax rate, Rebate for early payment or self occupancy. The pre-filled defaults are a realistic worked example — replace them with your own site or project figures.

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