我也想知道，好奇问。
mm怎么这么不小心啊！

同意楼上的，overdraft fee大概20到40刀不等。

hope you can dispute the fee (if there was any)

If you happen to have a line of credit (cash reserve account), you will not be charged with overdraft fee.  However, there will be interest charged on th $10 balance, but it will be very minimal if you pay the balance off. Call your bank to find out if your deposit has been linked with a line of credit account. You may have it without knowing it...some banks automatically add this to your checking account...