The use of this form is voluntary, however, if you fail to provide the IRS with your current address, you will be held responsible for any penalties and interest that may accrue on any deficiencies, notices, or demands for payment.
Although the IRS checks with the postal department for change of address files weekly, the responsibility of providing the IRS with the correct address still lies with the taxpayer.
If you wish to fill in a change of address form, TaxCut will generate the form for you.