<prompt> Human: This is confusing both me and my payroll department. I put my account number, but my credit union put my account number with an extra 1 at the end because the money is going to my checking account. What number do I give? Ive always been fine using just my account number before. The teller said the extra 1 is required but my payroll department has never heard of this before.  <response>: At my credit union, my member number is 6 digits and the specific account is 2 digits. -00 is my initial savings account. -01 is my checking account. -02 is my second savings account. -03 is my credit card. The member number and account are squished together to make an account number.Maybe you have something similar? Its possible that it worked before because someone somewhere just assumed that the money should be going to your checking account.I guess where I was going with that is that your account number is probably the number with the 1 at the end. 