I got taxed on my bank account

So basically i was playing normally when i got 2 notifications :
first one is about the interest rate which was like 29k
but the second one was about a tax rate (0.5%) that got deducted from my bank account
and which was 59k
it is the first time happening and i would like to know why would my bank account get taxed?
is it cz i have much money(11.8 million) ? or what?

The more cash you have in your bank acc tax  will be more.


even i got 100k tax on something like 20m or 28m so its basic.

This is not a bug.

you get wealth taxed for having 10m+ in your bank account keep your cash in hands in order to avoid it