Capital Growth Calculator for Australian Property Investors

Capital growth, sometimes called capital appreciation, is the increase in a property's value over time. If you buy for $600,000 and it is later worth $1,074,509, your capital growth is $474,509. It is the gain on the asset itself, separate from the rent the property earns.

For most Australian investors, capital growth is where the bulk of long-term wealth comes from. Rental income helps cover the holding costs, but it is the growth in the property's value that builds equity you can use later. That growth is only realised in cash when you sell or borrow against it.

This calculator compounds growth annually. Each year it multiplies the previous value by one plus the growth rate, so a property starting at $600,000 at 6% is worth $636,000 after year one, then $674,160 after year two, and so on. The gain in each year is larger than the last because it is calculated on a bigger base.

That compounding is why holding period matters so much. At 6% a year a property roughly doubles in value in around 12 years. Small changes in the growth rate also make a big difference over a decade, which is why it is worth modelling a few different rates rather than relying on a single optimistic number.

There is no single correct rate, and nobody can tell you what a property will actually do. Long-run capital growth for established Australian housing has often sat in the mid-single digits per year, but it varies enormously by location, property type and the period you measure, and growth is rarely smooth from one year to the next.

A sensible approach is to run a conservative rate, a middle rate and an optimistic rate, then plan around the conservative one. Capital growth and rental yield also tend to pull in opposite directions, so a high growth area often comes with a lower rental yield. It is worth weighing both rather than chasing growth alone.

Projected growth is a gross figure. When you eventually sell an investment property, the gain is generally subject to capital gains tax, and Australian residents who have held the asset for more than 12 months usually qualify for a 50% CGT discount on the gain. The tax that applies depends on your circumstances and the rules at the time.

Many investors also accept a cash shortfall each year, a negatively geared position, in the expectation that capital growth will more than make up for it. Whether that pays off depends on the growth actually arriving. As always, this calculator gives estimates only, and you should confirm your tax position with a registered tax agent or the ATO.