Personal Plus 2017. Under the Tax heading is "Capital Gain Estimator" which is quite useful, but I am sure there is an error in how it calculates Tax owing which is labelled "Approx tax". The correct way to calculate capital gain, is & quoting from the ATO site : "Subtract the cost base from the capital proceeds, deduct any capital losses, then reduce by the relevant discount percentage." The reckon process is in error in that it applies the discount to the net gains, before deducting any capital losses! Thats nice, because it ends up with a lower tax to pay, but it is incorrect. An example to explain it, on sale of 2 shares: Sh1 has a net capital gain of $10,000 and Sh2 has a net capital loss of -$2500. The correct tax is ($10000- $2500) x 50% x tax rate of say 32.5%= $1218.75 tax to pay. But Reckon's CG Estimator does it this way: ($10,000 x 50%) -$2500 x 32.5%= $812.50 tax to pay. I wish the latter was correct, but the ATO I'm sure is not so generous.