To pass a reconciliation with tax authorities, you must submit a written statement to the IRS. It is made in any form but must contain the details and the list of taxes that you want to check. The tax authority shall prepare a reconciliation report within five working days after receiving your request.
Next you need to prepare the following documents: copies of tax returns, payment documents confirming the fact of payment of taxes, fines and penalties, as well as reconciliation reports (if any).
Thereafter, on the appointed day you go together with all the documents to the tax office and check. When you consent you will be asked to sign a reconciliation statement in duplicate (one for you and one for inspection). In the event of a dispute, you'll need to provide the documents on which basis you did calculations on taxes.