How old must you be to remove your 41k?

You mean 401K? You must be more than 59 and 1/2 to avoid paying 10% penalty on your earnings and contributions in addition to paying taxes at current rate. There are cases for which you can get money without penalty.

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Answer:
It's a 401K. You can take out the money at any time after you leave the company if you are willing to pay a 10% penalty, in addition to the income tax. You must be 59 1/2 to take out the money without paying a 10% penalty.

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Answer:
i assume you meant 401k, im also assuming you’re 18, you can withdraw it anytime but the tax penalties are pretty stiff.

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Answer:
You mean to withdraw funds? You should repost your question under the category “investments”.

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Answer:
There's no age limit.