Investment growth calculator

How the calculator works

The lump sum is invested at the start. Monthly contributions go in at the end of each month and rise by the yearly increase you choose. The return compounds monthly, so 9% a year turns R 100 into R 109 after a year.

“In today’s money” divides the final amount by the inflation over the period. It shows what the money will buy, which matters more than the number itself.

Regulation 28

Regulation 28 of the Pension Funds Act limits how retirement funds invest, for example how much they can hold in shares and offshore. It applies to retirement annuities and to pension, provident and preservation funds. The TRG Income, Stable, Moderate and Balanced funds comply with it; the TRG Flexible Fund does not.

Investments outside a retirement fund, such as unit trusts and tax-free savings accounts, aren’t bound by it, so every fund in the list is open to them. Inside a retirement annuity, choose a fund that complies.

What the result leaves out

• Fees, which reduce your return. Enter a return after fees for a closer figure.

• Tax on interest, dividends and capital gains outside a tax-free savings account or retirement fund.

• The ups and downs of real markets. The calculator uses the same return every year.

Past investment performance is not necessarily indicative of future performance. Projections are based on assumptions that may not materialise. The value of investments may go down as well as up. The information on this website is general and should not be seen as financial advice or a recommendation. We trust our sources but can’t guarantee absolute accuracy or completeness. Talk to a TRG adviser about your own circumstances.