You can find the CP or LTR number on the right corner of the letter. You generally have 30 days to respond to an IRS notice, so there's no reason to ignore it.Always check which tax year the notice relates to. You can create fill-in versions of. Forms W-2 and W-3 for filing with SSA. We have provided sample letters that you can use to request waivers of several different types of IRS penalties. Use Form 843 to claim a refund or request an abatement of certain taxes, penalties, additions to tax, interest, and fees. Most taxpayers may request that their income tax refund be directly deposited into a U.S. financial account of their choice. Then fill them out and mail them to the appropriate address listed below. Under Michigan law, birth records are restricted documents.