[tediousdemise]

The right to be forgotten is just that - the right to be forgotten. Your issues or needs, whatever they may be (tax info retention, age info retention, etc), take a backseat to the user's rights.

In other words: if there is overlap, the right of one person's data to be forgotten supersedes the right of the other person's data to be remembered.

[greysphere]

You should try that logic out come tax day, see how that goes.

[tediousdemise]

I invite you to read another comment I made here with this exact example: https://news.ycombinator.com/item?id=28779463