By answering them honestly.
Don't lie to your bank. Aside from a sliver of temporary relief, nothing good can come from it.
Exactly.
Just be honest and find the right bank who is willing to listen.
Of course we are all here always telling our banks and our governments and all agents the truth, I though that was implied haha This is why we are on this forum so that we can learn how to just tell the bank the truth in the best way.
I think the question implies: what kind of documents does an average bank want to see when they say "source of funds"? Simply an invoice for some service? Are they ever checking these? How, do they call people on the invoice, do they check company numbers?
Or do they want other documents besides an invoice too, like some proofs or pictures of the finished job/service?
In a generic case, what kind of documents will make the bank sleep well for a 500'000$ transfer for example?
By answering them honestly.
Don't lie to your bank. Aside from a sliver of temporary relief, nothing good can come from it.
Assuming we're not talking about criminals (whose presence in the financial system is part of why things are so difficult nowadays), I understand this point and there are certainly cases where you can present yourself or your business slightly differently so increase your chances of success with a bank. For example, many adult businesses present themselves as marketing or consulting companies. This works best if the company opening the bank account in reality is just providing marketing or consulting services to a related company which provides the adult services.I agree but not all are able to do that, sadly. Some people will not get even a bank account if they are honest.