Cgt Cost Base · Koste Knowledge Base

What is a CGT cost base report?

Published 26 June 2026 · Last updated 26 June 2026

Quick Answer

A CGT cost base report organises property costs that may be relevant when calculating capital gains tax. It can include purchase costs, renovation costs, capital works, depreciation history and sale-related information for accountant review.

A CGT cost base report helps investors prepare for sale.

It may include:

Purchase price
Stamp duty
Legal fees
Settlement costs
Buyer's agent fees
Capital improvements
Renovations
Extensions
Construction cost estimates
Depreciation schedules
Capital works deductions
Sale costs
Agent fees
Advertising costs
Ownership details

It is especially useful when:

The property has been held for years
Records are missing
Renovations were completed
Depreciation was claimed
The property changed use
The property was inherited
The property is held in a trust or SMSF

Frequently Asked Questions

Is this the same as a depreciation schedule?

No. It supports CGT calculation, while a depreciation schedule supports annual deductions.

Who uses the report?

Your accountant or tax adviser.

When should I order it?

Before selling or before your accountant starts the CGT calculation.

Can it estimate missing construction costs?

A QS may estimate construction-related costs where appropriate.

Can Koste.ai help?

Yes. Koste.ai can support CGT cost base report workflows.

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Written by Koste Team · Koste Chartered Quantity Surveyors · AIQS Member · RICS Member · TPB Registered · 1300 669 400 · info@koste.ai