FIFO Calculation Tool for currency gain / loss

[holymackarel]

Hello All,

Recently I have learnt that apart from our worldwide income being taxed here in Germany , we will be additionally taxed on the currency loss / gain. I have been trying to build my own FIFO calcualtor and haven't been successful so far. Has anyone here built one for themselves and would be willing to share it ?
Would be really grateful for the help

Thanks