Tracking Capital Improvements for Tax Purposes
Capital improvements aren't immediately deductible, but they reduce your capital gains tax when you sell. Learn how to track them correctly.
What are Capital Improvements?
Capital improvements are renovations or upgrades that:
- Increase the property's market value
- Extend the property's useful life
- Change the property's character or use
- Upgrade or modernize beyond the original condition
Unlike repairs (which are immediately deductible), capital improvements must be tracked and added to your property's cost base for capital gains tax (CGT) purposes.
Common Capital Improvements
What IS a Capital Improvement
- Kitchen or bathroom renovations
- Adding new rooms or extensions
- Installing a swimming pool or spa
- Building a deck, patio, or pergola
- Replacing old carpet with hardwood or tile flooring
- Installing ducted air conditioning or central heating
- Completely replacing a roof (not just damaged tiles)
- Major landscaping or retaining walls
- Installing solar panels
- Converting a garage into a livable room
What is not a Capital Improvement
- Painting or redecorating (cosmetic only)
- Replacing broken roof tiles or windows
- Fixing leaks or cracks (repairs)
- Routine maintenance and lawn care
- Replacing damaged flooring with same material
- Cleaning gutters and downpipes
- Pest control and general upkeep
- Replacing a broken hot water system with equivalent
- Patching walls or repairing plumbing
- Minor repairs to gates, fences, or structures
Tax Treatment of Capital Improvements
Immediate Tax Treatment
Capital improvements are not immediately tax deductible in the year you incur them.
Depreciation Pathway
Some capital improvements can be depreciated over time:
- Building structure improvements: Depreciated at 2.5% per year under Division 43 (capital works deduction)
- Plant and equipment: Appliances, fixtures, and removable items depreciated under Division 40 at various rates
What capital improvements cannot be depreciated:
- Land improvements (landscaping, driveways, fencing) – land itself doesn't depreciate
- Structural works on buildings constructed before 16 September 1987 (no Division 43 eligibility)
- Improvements made before the property was first used to produce income
- Non-structural cosmetic works that don't fit Division 40 or 43 categories
- Structural work (cabinets built-in, tiling): $30,000 → Depreciate at 2.5% per year = $750/year
- Appliances (oven, dishwasher): $20,000 → Depreciate over effective life (typically 8-10 years)
CGT Cost Base Addition
Capital improvements are added to your property's cost base, which reduces your capital gains tax when you sell. However, any depreciation you claim reduces the cost base addition:
Original improvement cost: $50,000
Depreciation claimed over 10 years: $15,000
Net cost base addition: $50,000 - $15,000 = $35,000
You benefit from both: annual tax deductions from depreciation AND a reduced capital gain at sale (but the cost base is reduced by the depreciation you've already claimed).
Purchase price: $600,000
Capital improvements over ownership: $100,000
Depreciation claimed on those improvements: $20,000
Sale price: $900,000
Cost base calculation:
Purchase price: $600,000
+ Capital improvements: $100,000
- Depreciation claimed: $20,000
= Cost base: $680,000
Capital gain = $900,000 - $680,000 = $220,000
Tax saved by tracking: $80,000 reduction in capital gain × 50% discount × 45% tax rate = $18,000 saved
How to Track Capital Improvements
1. Keep All Invoices and Receipts
Retain invoices, receipts, and quotes for:
- Materials purchased
- Labor costs (tradespeople, contractors)
- Design and architect fees
- Council permits and approval fees
2. Document with Photos
Take before and after photos to demonstrate:
- The original condition
- The extent of work completed
- The improvement's impact on the property
3. Maintain a Capital Improvements Register
Create a spreadsheet or use property management software to track:
- Date of improvement
- Description of work completed
- Total cost (including materials, labor, permits)
- Receipts and invoice references
- Depreciation schedule updates (if applicable)
Mint Tip
Mint automatically tracks capital improvements separately from repairs, stores digital receipts, and compiles them into a CGT-ready report when you sell.
4. Update Your Depreciation Schedule
After major renovations, update your depreciation schedule to include:
- New building structure costs (for capital works deduction)
- New plant and equipment (appliances, fixtures)
Record Keeping Requirements
The ATO requires you to keep records for:
- 5 years after you dispose of the asset (i.e., sell the property)
- Longer if you claimed capital works deductions (up to 40 years in rare cases)
Acceptable records include:
- Digital or physical copies of invoices
- Bank statements showing payment
- Contracts with builders or tradespeople
- Photos and project documentation
- Updated depreciation schedules
Mint Property Mate's digital record-keeping ensures all your capital improvement expenses are organized, easily accessible, and ready for tax time – no more lost receipts or guesswork when it comes to CGT.
Common Mistakes to Avoid
- Losing receipts: Without documentation, you can't add improvements to your cost base – resulting in higher CGT.
- Mixing repairs and improvements: Repairs are immediately deductible; improvements are capitalized. Keep them separate.
- Not updating depreciation schedules: Missing out on annual depreciation deductions after renovations.
- Forgetting small improvements: Even minor upgrades (new appliances, landscaping) add to your cost base.
- Not tracking depreciation claimed: Depreciation reduces your cost base and increases your capital gain.
Mint's Takeaway
- Capital improvements are not immediately deductible but reduce your capital gains tax when you sell.
- Track all improvement costs, including materials, labor, permits, and professional fees.
- Keep invoices, receipts, photos, and documentation for at least 5 years after selling.
- Some improvements can be depreciated over time (capital works at 2.5%, plant/equipment at various rates).
- Update your depreciation schedule after major renovations to claim new deductions.
- Depreciation claimed reduces your cost base – track it carefully to avoid CGT surprises.
- Maintaining a capital improvements register saves thousands in CGT when you sell.
Mint automatically separates capital improvements from repairs, tracks depreciation, and compiles a CGT-ready cost base report.