Call the IRS at (559) 452-4010 to obtain a number. A paid tax return preparer who files Form 843 for you must sign the form and fill in the identifying information at the bottom of the form.Below you will find information about the services we offer online, and in-person at our Oakland and Tri-Valley office locations. The California Debt and Investment Advisory Commission (CDIAC) provides information, education, and technical assistance on debt issuance and public. Page provides taxpayers and tax professionals the mailing address for submitting Form 843. 1 to 20 of 73 Next 20 Forms Last 20 Forms. Parcels will be offered at live auction in the order of their item numbers on the tax sale list. Please note that item numbers might not be consecutive. Notwithstanding the foregoing, OEFCU may issue Form. Also, do not use Form 843 to amend a previously filed income or employment tax return.