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Fund Accumulation

The Effect of Different Rates of Interest

Here you can see how a fund of 1000.00 (any currency) is accumulated over a period of 5 years at different yearly interest rates, if the yearly interest is added to the capital at the end of each year, as it would be in a sinking fund, or a savings scheme with regular saving deposits.

Computation of Growth of 1000.00 at 5% p.a. Computation of Growth of 1000.00 at 10% p.a. Computation of Growth of 1000.00 at 20% p.a. Computation of Growth of 1000.00 at 40% p.a.

Above are the computations of the Payment (PMT), required to accumulate a fund of 1000.00 (FV) by 24 February2015, starting on 24 February 2010 (in 5 years), at different annual (yearly) rates of growth (i%): 5%, 10%, 20%, 40%.

The computations were performed using TimeMoney, an iPhone App, available from the App Store. See also MoneyGrowth for Android devices.

Schedule of Growth of 1000.00 at 5% p.a. Schedule of Growth of 1000.00 at 10% p.a. Schedule of Growth of 1000.00 at 20% p.a. Schedule of Growth of 1000.00 at 40% p.a.

Above are the fund accumulation schedules of the above computations.

The schedules show the accumulation of the capital within each of the 5 years (compounding periods).

The schedules were produced using TimeMoney, an iPhone App, available from the App Store. See also MoneyGrowth for Android devices.

Graph of Growth of 1000.00 at 5% p.a. Graph of Growth of 1000.00 at 10% p.a. Graph of Growth of 1000.00 at 20% p.a. Graph of Growth of 1000.00 at 40% p.a.

Above are the graphs of the above computations.

The graphs show the accumulation of the capital within each of the 5 years (compounding periods).

The green line in the graphs is the Fund Capital (Future Value). The red line is the total Interest received at the end of each period. The blue line is the total of the capital contributions made.

Looking at the graphs side by side, one can see that with the increase of the growth rate the part of the fund contributions due to interest (under the red line) becomes progressively greater than the part of the fund capital due to capital contributions (under the blue line). This affects the total cost of the fund.

Thus at 5% interest rate the cost of the fund is 904.87 (that is 90% of the fund), while at 40% interest the cost of the fund is reduced to 543.20 (that is 54.32% of the fund).

The graphs were produced using TimeMoney, an iPhone App, available from the App Store. See also MoneyGrowth for Android devices.

The formula for Fund Payment (PMT) is:

PMT = FV * r / ((1 + r) n - 1)

Where:

FV is Future Value,
r is the yearly interest, as a fraction ( i / 100)
n is number of years.

But with TimeMoney, an iPhone App, available from the App Store, to enter a computation data, or change it, and to produce schedules and graphs is just a few tap on the iPhone screen . See also MoneyGrowth for Android devices.

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