Capital Growth Calculator

Capital growth is the increase in your property's value over time. In New Zealand, property has historically appreciated at around 5-7% per year on average, though growth varies significantly by location, property type, and market cycle. This calculator uses compound growth: each year's growth builds on the previous year's value.

If you sell a residential property within 2 years of purchase (for properties bought from 1 July 2024), the gain is taxable at your marginal income tax rate under the bright-line test. Enter the portion of your projected gain that would fall within the bright-line period, and the calculator shows the tax impact. Gains outside the bright-line period are generally tax-free.

Long-term NZ property growth averages 5-7% per year, but this varies widely. Conservative projections might use 3-4%, while optimistic scenarios use 7-8%. REINZ and QV publish regional data that can help you choose a rate. The calculator lets you test different rates to see best-case and worst-case outcomes.

Most investors project 5-10 years for medium-term planning, or 20-30 years for long-term wealth building. Shorter projections (1-3 years) are useful if you are planning to sell soon and want to estimate the bright-line tax impact. Longer projections help compare property against other investments like KiwiSaver or shares.

Not always. While NZ generally does not have a comprehensive capital gains tax, residential property sold within the bright-line period (2 years from 1 July 2024) is taxable. Property bought with the intention of resale may also be taxable under existing tax law. Family homes are usually exempt if you meet the main home exclusion criteria.