If you do not send us a valid power of attorney form, we cannot talk about information specific to your third party. This includes, but is not limited: taxpayers who have unpaid tax bills don`t have to panic about how they should pay their taxes. The process of requesting reliable agreements is relatively quick and painless, although penalties and interest can add up over time. Individuals who are unable to pay their federal tax bill and do not enter into agreements with the IRS may be subject to the IRS collection process and more penalties and interest than if they had made prior arrangements to make instalments. For more information, see IRS Theme #202: Tax Payment Options. Payments can be made between the first and 28th of each month. If the agreement provides that the taxpayer must make the payment before the 15th of each month and the payment is not made, the agreement is immediately considered late. It is therefore recommended that those who pay by cheque or payment order send their payments by mail at least seven to ten working days before the due date, in order to ensure their timely receipt. Taxpayers who are late in their instalment plans can apply for reintroduction, but they cannot ignore their prior agreement by creating a new one. . . .