Where to send payment for back taxes?

The office to send your payment to is based on what state you live in, but you can send it to any IRS office. Make sure you put the primary taxpayers social security number on the check or money order and what year you are paying for. If you owe for several years and aren't sure what you owe, they will apply the payment to the oldest amount due. Along with your payment, put a note attached asking for a statement of what you owe and that you are making this payment for past due taxes and what type. Individual or married people would put 1040 taxes.