Tax Resources for Accountants and Small Businesses (U.S.)
Introduction Receiving a letter from the IRS can be stressful, especially when it says “CP 2100 Notice” or “B Notice.”Don’t panic — this notice does not mean you are being audited or owe money.It...
Updated: October 2025 If you’ve received a CP 2100 Notice from the IRS, don’t panic — but don’t ignore it either. The notice means the IRS found a name and taxpayer identification number (TIN)...
Updated: October 30, 2025 Understanding the IRS Second B Notice When you issue Form 1099s to vendors or contractors, the IRS expects each payee’s name and taxpayer identification number (TIN) to match official records....
Updated: October 30, 2025 What Is a First B Notice? When you file Form 1099s and the Internal Revenue Service (IRS) identifies a vendor’s or payee’s name and Taxpayer Identification Number (TIN) combination as...
If you receive a CP2100 or CP2100A Notice from the IRS, it means some of the name and taxpayer identification number (TIN) combinations on your Forms 1099 don’t match IRS or Social Security Administration...