SAVING & INVESTING / FREE CALCULATOR

Savings & compound interest calculator

Explore how regular contributions, time and compounding could grow your savings.

YOUR NUMBERS

Let’s work it out.

Calculated on your device. Save a copy only when you choose.

A CLEARER PICTURE

Estimated future balance

R 279 723,82

Illustrative growth · returns are not guaranteed

Total contributions incl. initial balance: R 190 000,00
Estimated growth: R 89 723,82
Balance in today’s money: R 279 723,82

See the full breakdown

ESTIMATE · NOT A QUOTATION

Save this scenario, then change your inputs to compare the results.

BEHIND THE NUMBER

Your calculation, unpacked.

Total contributions incl. initial balance: R 190 000,00
Estimated growth: R 89 723,82
Balance in today’s money: R 279 723,82

UNDERSTAND THE TRADE-OFFS

Small changes.
Different possibilities.

Try changing one input at a time. Compare the total cost, as well as the monthly number.

View year-by-year savings projection

Contributions include your starting balance. Negative growth represents a loss.
Year	Contributions	Growth	Balance
1	R 28 000,00	R 1 311,78	R 29 311,78
2	R 46 000,00	R 4 019,61	R 50 019,61
3	R 64 000,00	R 8 224,41	R 72 224,41
4	R 82 000,00	R 14 034,39	R 96 034,39
5	R 100 000,00	R 21 565,61	R 121 565,61
6	R 118 000,00	R 30 942,47	R 148 942,47
7	R 136 000,00	R 42 298,41	R 178 298,41
8	R 154 000,00	R 55 776,50	R 209 776,50
9	R 172 000,00	R 71 530,13	R 243 530,13
10	R 190 000,00	R 89 723,82	R 279 723,82

THE WORKINGS

How this calculation works

The equivalent monthly growth factor is (1 + r/m)^(m/12), where r is the nominal annual return as a decimal and m is the selected compounding frequency. Contributions are added at the selected point each month. Annual contribution increases apply every 12 months. Today’s-money value divides the final balance by (1 + inflation)^years.

A worked example

R12 000 saved initially at 0% with R1 000 added monthly for one year ends at R24 000. With positive growth, paying at the start of each month gives each contribution an extra month to grow.

Assumptions & limitations

Returns, inflation and contribution increases are constant assumptions, not forecasts. Negative returns are supported above −100%.
Monthly equivalent growth interpolates annual or quarterly compounding; actual product crediting rules may differ.
Taxes, investment fees, withdrawals, product limits and market volatility are excluded. Investment returns are not guaranteed.

Read a little further.

Saving & investing4 MIN READ

How compound interest grows savings

See what time and regular saving add to your plan, without assuming guaranteed returns.

Read the guide