<p>The <b>IRR</b> function is one of the financial functions. It is used to calculate the internal rate of return for a series of periodic cash flows.</p>
<pstyle="text-indent: 50px;"><b><em>values</em></b> is an array that contains the series of payments occuring at regular periods. At least one of the values must be negative and at least one positive.</p>
<pstyle="text-indent: 50px;"><b><em>guess</em></b> is an estimate at what the internal rate of return will be. It is an optional argument. If it is omitted, the function will assume <b><em>guess</em></b> to be 10%.</p>
<p>The numeric values can be entered manually or included into the cell you make reference to.</p>
<p>To apply the <b>IRR</b> function,</p>
<ol>
<li>select the cell where you wish to display the result,</li>