Too many people view their 401(k) plans as this incredibly tempting pile of money available to them when the moment strikes. Sometimes a moment is for the silliest of short-term reasons, such as the "need" to buy a much nicer car. Other reasons appear more rational, such as when the money seems like the only source of funding after a job loss.
No matter the reason, raiding your 401(k) plan should be near the bottom of your list of places to raise cash. Distributions from a 401(k) plan are immediately taxable and, with very few exceptions subject to a 10% early distribution penalty if the accountholder is less than 59 ½ years old. Furthermore, most states will also tax any 401(k) distribution. Taken together, it is not uncommon for the distribution check you receive to be 40% less than the amount you see deducted from your statement. Critically, a much larger amount will be forever reduced from your account in the future, as the money you distribute and spend today will not be available to grow for your retirement.
A 401(k) loan sounds better than a distribution since you can pay it back. Indeed, it is preferable. But a 401(k) loan, while not subject to the taxes and penalties mentioned above, is determined to be so if you are unable to pay it back according to the schedule. Keep in mind that the schedule could change, especially if you are laid off or wish to change jobs. In either of those cases, you could have as little as 60 days to repay the entire amount or face interest and penalties on the distribution of money that, in all likelihood, you no longer have.

401k rollover options are many. Upon termination of employment, retirement or your employer closing down the 401k rollover plan, you decide what to do with your 401 plan balance. Here are several rollover options available:
What many don’t realize is that when you when you take a loan against your 401k and pay it back, you end up incurring double taxation.
When you pay back the loan, you are paying back with taxed dollars. The money is going into a vehicle that is deferring taxes for the future.
When you end up getting your funds at retirement, you get taxed again on the amount that you paid with taxed money: double taxation.
There are certain truths to 401k retirement plans that led me to cash mine out. In my mind, it’s a risky investment.