How does this work, if I had no job but had savings in a Isa that gains interest at the end of said year I've had no income so nothing to tax right?

Isa don't get taxed right? I am gonna guess they find a way to tax you somehow otherwise I think I found myself a plan.

As I can live on my Pip money, which is not classed as income. I know my universal credit would stop, but that wouldn't matter in the long run if those savings to gain so much interest without been able to get taxed.

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The best part is even if the Government somehow classed the interest as income, I would need to make 12,570 in a year before it's enough income to be taxable anyway. Which for that I would need a 1/4 of a Million in my bank anyway, since that roughly equates to 12k interest per year.
Which ya know I wouldn't have to worry about for years using this tactic and by the time I am there I won't care if they do or not.
How does this work, if I had no job but had savings in a Isa that gains interest at the end of said year I've had no income so nothing to tax right?
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