CGT Guide - Capital Gains Tax NZ
🏠 Understanding Capital Gains Tax in NZ
New Zealand doesn't have a general capital gains tax (CGT), but capital gains ARE taxed in specific situations under income tax rules. The tax applies when you buy assets with the intention of resale, or when you sell property within the bright-line period.
When Capital Gains Are Taxed
1. Bright-Line Property Rule
Sell residential property within specific timeframes and profit is taxable:
| Purchase Date | Bright-Line Period | Tax on Sale |
|---|---|---|
| Before 27 March 2021 | 5 years | Taxable if sold within 5 years |
| 27 March 2021 onwards | 10 years | Taxable if sold within 10 years |
| New build purchased after 27 March 2021 | 5 years | Exemption for new builds |
Main Home Exemption:
Your main residence is exempt from bright-line if you lived in it continuously for more than 50% of ownership period.
2. Intention Test
Profit taxable if purchased with intention to resell, regardless of timeframe.
Indicators of intention:
- Multiple property purchases/sales
- Short ownership period
- Property improvements before sale
- Financing structure (short-term bridging)
- Pattern of trading behaviour
3. Business or Trading
Regularly buying/selling assets (shares, property, crypto) = business income. All gains taxable.
4. Land Dealers and Developers
In the business of dealing/developing land = all profits taxable.
What's Generally NOT Taxed
| Asset | Tax Treatment |
|---|---|
| Main home (held >10 years + lived in >50%) | Tax-free |
| Long-term share investments (not trading) | Usually tax-free (unless FIF rules apply) |
| Personal use assets (car, furniture) | Tax-free |
| Collectibles (art, antiques) | Usually tax-free (unless trading) |
| KiwiSaver gains | Taxed within fund (PIE rates) |
CGT Calculation Example
Investment property sold within bright-line:
Deductible Costs:
Share Trading
When shares are taxable:
- Day trading or frequent trading = business income
- Bought with intention to sell short-term
- Part of managed fund with turnover
Long-term buy-and-hold:
- NZ shares: Usually tax-free on sale (dividends taxed)
- Overseas shares: FIF rules may apply if >$50,000
Foreign Investment Fund (FIF) rules tax unrealized gains annually on overseas shares/funds >$50,000. This is different from CGT which taxes when you sell. See our FIF guide for details.
Cryptocurrency
IRD treats crypto as property:
- Frequent trading: Business income, all gains taxable
- Long-term investment: Gains potentially tax-free
- Intention test applies: Did you buy to resell?
Keep records for 7 years: purchase/sale contracts, dates, prices, improvements, expenses, intention at purchase. IRD can challenge tax-free treatment years later if you can't prove your case.
🔢 Calculating Capital Gains Tax
Example 1: Rental Property (Bright-Line)
Purchased: April 2022, Sold: March 2025 (within 10-year bright-line)
Purchase:
Ownership Improvements:
Sale:
Capital Gain Calculation:
Example 2: Share Portfolio Trading
Active share trader (business income):
| Transaction | Date | Amount | Gain/Loss |
|---|---|---|---|
| Buy Air NZ | Jan 2024 | $10,000 | - |
| Sell Air NZ | Mar 2024 | $12,500 | +$2,500 |
| Buy Fletcher | Apr 2024 | $15,000 | - |
| Sell Fletcher | Jun 2024 | $13,800 | -$1,200 |
| Buy Meridian | Jul 2024 | $20,000 | - |
| Sell Meridian | Sep 2024 | $24,000 | +$4,000 |
Annual Tax Calculation:
Example 3: Main Home Partial Exemption
Owned 6 years, lived in for 4 years:
Example 4: Cryptocurrency Trading
Frequent crypto trader:
Tax Planning Strategies
1. Timing of Sale
Sell in lower income year to reduce marginal rate:
2. Use Available Losses
3. Main Home Planning
Live in property >50% of ownership to maximise exemption.
4. Joint Ownership
Split gains between partners to utilise lower tax brackets.
🌍 Real-World CGT Scenarios
Investor with 3 properties sold in one year
Sales:
| Property | Purchase | Sale | Gain | Status |
|---|---|---|---|---|
| A | $400K (2020) | $520K (2024) | $120K | Within bright-line |
| B | $550K (2022) | $680K (2024) | $130K | Within bright-line |
| C | $320K (2010) | $480K (2024) | $160K | Outside bright-line |
Tax Calculation:
IRD concern: Multiple sales may indicate trading activity. Property C could be challenged as taxable despite being outside bright-line due to pattern of behaviour.
Bought land, subdivided, sold sections
Transaction:
Tax Outcome:
Key lesson: Subdividing land is generally treated as development activity, making all profits taxable regardless of bright-line or intention.
Two people, same shares, different tax outcomes
Person A (Day Trader):
Person B (Long-Term):
Difference: Frequency and intention matter. Same dollar gain, vastly different tax.
Couple's main home within bright-line
Scenario:
Tax Analysis:
If They Rented It Out:
🎯 Test Your Knowledge
Complete this quiz on Capital Gains Tax
Frequently Asked Questions
Does New Zealand have a capital gains tax?
New Zealand has no general capital gains tax, but some gains are taxed under specific rules, such as the bright-line test on residential property and rules for traders.
What gains are taxed in New Zealand?
Gains can be taxable if you bought property to resell, trade shares as a business, or sell residential property within the bright-line period, among other situations.
Is profit on selling shares taxed?
Usually not for long-term investors, but if you trade frequently or buy with the intention of resale, profits can be taxable as income.
How do the FIF rules relate to capital gains?
For most overseas shares the FIF rules tax a deemed return rather than the actual gain, which is separate from any capital gains concept.
Situations like yours. The 4 situations worked through above sit alongside 20 more about owning a rental or holiday home, each with the sums shown.