If you're mailing in your payment, you should send in the check or money order—no cash allowed—payable to "United States Treasury" along with the corresponding quarterly payment voucher from the Form 1040-ES. The payment voucher provides your identity information and allows the IRS to correct...
If you pay online, which you can do any time of the year, be sure to select the tax year and tax type or form associated with your payment. If you pay by check or money order, send the payment along with aForm 1040-ESvoucher to the address specified for your state or territory on...
Payment vouchers are included with Form 1040-ES. Fill out all information requested on the voucher. 7 Pay using cash in person if desired. If you want to pay cash in person, then you need to register online at https://www.officialpayments.com/fed. You can then make a maximum transactio...