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A guy scammed me, but he gave me a bank account number & routing number. Can I use that to take out what he owes me?
You're not focusing in the right place and neither is anyone else on this thread because this isn't about the guy owning you money... This is about you not having enough money to pay your rent.  If rent wasn't due and the utility bills weren't piling up, you wouldn't be trying to justify taking money out of someone else's account. So let's triage this. Your #1 problem isn't hunting down Dr. Deadbeat's wallet. So put a pin in that for now and get to the real deal.  Getting rent paid. Right? OK, you said he called "regarding a business I have".  It's great that you have your own business.  Are you also employed elsewhere?  If you are, then you really should simply go to your employer and tell them you are in financial distress.  Tell them that right now you can't cover your rent or bills and you want to know if they can help, i.e. give you an advance from your paycheck, do a withdrawal/loan from a retirement savings that's in your employee benefits package, etc...  They will HELP YOU because it's in their best interest as much as it is in yours. Foregoing that, consider these thoughts... If you were to go your grandparents telling them what you told all of us here, and ask them the same "do you think it's ok to...", they would say something close to "Absolutely DO NOT touch someone else bank account EVER! It doesn't matter what information you have, how you got it, or what you think they owe you. Do NOT touch it.  There's a legal system that will help you get it from them if they truly do owe it to you."   I guarantee you this, withdrawing funds from an account on which you are NOT an authorized signatory is both financial theft as well as identity theft. Bonus if you do it on a computer, because you'd then be facing criminal charges that go beyond your specific legal district, i.e. you'd face criminal charges on a national level. If convicted, odds are you'd be sentenced within the penal guidelines of the Netherlands 1983 Financial Penalties Act (FPA). Ergo, you would have much much much less money in the very near future, which would feel like an eternal walk through the Hell of the court system.  Ultimately, over your lifetime you would be exponentially poorer than you may think you are now.  I strongly urge you to rebrand this "financial loss" as "Tuition at the School of Hard Knocks". There's one last thing... the train jumps the tracks for me during your story... This guy called you? Right?...  (raised eyebrow) What kind of business do you "have"?  The sense of desperation and naiveté in your urgent need for money to pay rent. The fact that you are accepting payment for services by conducting a  bank transfer specifically from your clients account directly toward your own utility bills is a big red flag. Bypassing business accounting and using revenue for personal finances isn't legitimate business practices. Plus you are doing it by using the bank information of brand new client who is a TOTAL stranger.  Now consider fact that this total stranger was so exceedingly generous to someone from whom he wanted personal services to be rendered. Those all tell me that he's doing something he wants the other person to do for him and he doesn't want anyone else to know.  The fact that he's being so benevolent like a 'sugar daddy' tells me that he feels guilty for having someone do what he's asking them to do.  Perceived financial superiority is the smoothest of smooth power tools that predators and abusers have in their bag.  For instance, an outlandish financial promise is probably the easiest way to target someone who is vulnerable; and then seduce them into being their victim.  Redirecting your focus on how much better life will be once your problem is solved by this cash rather than focusing on the fact that they're taking advantage of you.  Offering to pay rates that are dramatically excessive is a way of buying a clean conscious, because he's doing something that will "rescue you" from a crisis. The final nail in the coffin for me was that he left so abruptly and your implied instinct suggesting his reason was a lie.  It sounds like he got scared or ashamed of his actions and ran out.  It paints a picture that this was sex-for-money Good luck to you.