In general, you can withdraw money from your 401(k) account, but it's important to understand the potential consequences and fees involved. Firstly, if you withdraw money from your 401(k) before you reach age 59 and a half, you will likely have to pay an early withdrawal penalty of 10% in addition to regular income taxes on the amount withdrawn Calculate IRS Penalties and Interest Rates. However, there are some exceptions to this penalty, such as if you become disabled or if you have certain medical expenses.

Secondly, you may be subject to taxes on the amount withdrawn. This means that if you withdraw $10,000 from your 401(k) and your marginal tax rate is 20%, you would owe $2,000 in taxes.

Thirdly, if you have a loan from your 401(k), cancelling your 401(k) would require you to pay back the loan in full.

Lastly, it's important to consider the long-term implications of withdrawing money from your retirement account. The money you withdraw is no longer earning compound interest, which can significantly impact your retirement savings in the future.

Therefore, before cancelling your 401(k) and withdrawing your money, it's important to carefully consider your options and seek advice from a financial professional.