Strictly speaking the tax deduction should exclude fees. So if you invest 500k and the fees are 1k, your LTF tax deduction would be 499k.

However, it's not always that well enforced, and they don't seem to bother too much with it. Plus the info on a contract note may not split it out and show the fee separately, whereas the end of year statement usually does. So often you can use a doc that doesn't split it out.

In the above case I always tend to claim 500k, and haven't to date had an issue, tho I do try and use a doc which doesn't obviously highlight the fees.