401k loan vs bank loan for a vehicle
I know the general consensus is that 401k loans are a bad idea but I have some questions about it and need convincing why it's a bad idea vs paying interest to a bank.
I'm 39 and my only current debts are my mortgage @ 2.5% and a 0% loan on a tractor which will be paid off in a few months. My vehicle and my wife's vehicle are both paid off. I need to buy a new car so I'm considering a 35k loan to pay for it. I set a strict cap at 35k because I want something that will last a very long time but I don't need to overspend. The options I'm considering are 4.59 from my bank or 8% from my 401k.
I know that the biggest turn off for 401k loans is taking away money that could be gaining interest. I have a very steady job and have no worries about losing it. My employer matches 100% of 6% which I'm currently contributing 12%. I also have a pension plan through my employer. I max a Roth IRA every year, have an individual brokerage account and a HYSA. I also collect retirement from military service, so while withdrawing money from my 401k is a huge turn off (which I agree with, I'd rather not if it doesn't make sense), my finances in retirement will still be fine.
My questions about 401k loans... I understand that I will just be paying myself back with interest. If I withdraw 35k @ 8%, does that 35k + 8% go back into my 401k, or is the 8% interest more like a fee to where I will only be putting back 35k (without the 8% even though I'm paying it) into my account? It doesn't make any sense to me why the 8% wouldn't go into my 401k but just want to verify. I did confirm through vanguard that I can still make additional contributions to my 401k while I am paying off the loan. With this option I think the (only) positive side is that I'm paying interest to myself instead of a bank
Or the other option, go through my bank and get a 4.59% loan and be paying them the interest. With this option that 35k that I didn't withdraw from my 401k will continue to make ~12% (as of right now) growth.
As I'm typing this I think I answered my own question. It makes a lot more sense to pay interest to a bank at 4.59 and leave my 401k alone so that 35k continues to grow by ~12% instead of taking it out and paying back in small increments. ????
Since I know someone will chime in about buying a new vehicle, ive ran the numbers and made my mind especially considering the state of the used car/truck market for anything halfway decent.