But I've read there are limits to the size of the transfers. I originally asked about limits. Do you know of these limits? Are there certain thresholds which cause red flags for bankers or others looking on?
There are no limits as such. Cash deposits over $10,000 are reported to the IRS and require the completion of paperwork. As to flags, I would keep the transfers below the $10,000 mark to avoid any flags being raised. Also I would do the transfers at irregular intervals to avoid a pattern of repeated behavior which would tempt thieves and could also alert the banking system. However, transfers of any amount from a recognized bank abroad to a bank in the US is acceptable and standard business practice. If you have no skeletons in the closet I would not be worried. The worst that could happen is that you may be asked to explain the source of funds.
Aside from the questions above, I can move as much money from my EURO account to my U.S. account as I want?
Yes you can move as much as you wish. Obviously you would not want to move sums significantly greater than needed simply to have them sit in a US bank earning nothing. Common sense should prevail there.
I read that if I have an account overseas which is over $10,000, it must be reported to the IRS. If I move, let's say 10,000 EURO from an account in my wife's name, will they consider it as "mine" if I transfer it back to her account--let's say it will be 15,000 EURO by then.
That is correct. The FBAR reporting needs to be completed regularly and an account in your wife's name is XXXXX XXXXX if under joint ownership.If you want to move money from an account in your wife's name in Germany to an account in your name in the US it is legal and will be considered yours while in the US account under your name. It reverts to hers alone when transferred back to her account.
Let me know if you need additional assistance or clarification.