Similarly to how benchmarks work, allow to choose an index (e.g. inflation), benchmark, asset or filter to discount the return with.
When inflation index is chosen - it gives you the Real Return.
If a benchmark is chosen, it gives you the Excess Return - the added value beyond what could be achieved by simply investing in the benchmark (it’s not a simple difference!).
The discount would be applied to:
- RoR of the portfolio - both in metrics, tables and charts
- Benchmark rate - in metrics and charts
- Market Price change rate
It (rather) won’t be applied to return $ amounts, as it may quickly get very confusing. However, there could be a separate metric displaying the discounted return