Anything cash10K and over requires you sign a IRS disclosure form. So I make my deposits or withdrawals usually in 9K or random amounts infrequently. Otherwise the safe has my cash. I have been to Colorado, Texas, New York, Minnesota, New Hampshire, California, Tennessee, Kentucky and several other states to purchase cars in cash. Accidents can happen anywhere, but when traveling with cash, I'm the safest driver on the road, and the cash has been well hidden. I ask the sellers for Bill of Sales for anywhere from $100 to $500 dollars and other considerations. No one knows what other considerations could be. If asked make something up. Keeping good amount of cash on hand is good for when great deals come around.