--- title: 5 Most Common Business IRS Notices | LedgerFi description: Getting an IRS notice can be stressful—but not all of them mean you're in trouble. Learn the most common notices businesses receive & what each one means. image: https://www.ledgerfi.co/hubfs/LedgerFi-OG-Default.png --- Tax Optimization # 5 Most Common Business IRS Notices Getting an IRS notice can be stressful—but not all of them mean you're in trouble. Learn the most common notices businesses receive & what each one means. [ Nathan Hodgens ](https://www.ledgerfi.co/resources/author/team-ledger) Apr 23, 2025 [mailto:?subject=Check%20out%20https://www.ledgerfi.co/resources/5-most-common-business-irs-notices&utm_medium=social&utm_source=email%20&body=Check%20out%20https://www.ledgerfi.co/resources/5-most-common-business-irs-notices&utm_medium=social&utm_source=email](mailto:?subject=Check%20out%20https://www.ledgerfi.co/resources/5-most-common-business-irs-notices&utm_medium=social&utm_source=email%20&body=Check%20out%20https://www.ledgerfi.co/resources/5-most-common-business-irs-notices&utm_medium=social&utm_source=email) [Tax Optimization](https://www.ledgerfi.co/resources/tag/tax-optimization) #### TABLE OF CONTENTS - [CP2000- Notice of Underreported Income](https://www.ledgerfi.co/resources/5-most-common-business-irs-notices#CP2000) - [CP171- Notice of Amount You Owe in Tax, Penalty, and Interest](https://www.ledgerfi.co/resources/5-most-common-business-irs-notices#CP171) - [CP2100A- Incorrect or Missing TIN on 1099s](https://www.ledgerfi.co/resources/5-most-common-business-irs-notices#CP2100A) - [CP259- You Didn't File a Required Return](https://www.ledgerfi.co/resources/5-most-common-business-irs-notices#CP259) - [CP276B- Federal Tax Deposit Penalty Waived](https://www.ledgerfi.co/resources/5-most-common-business-irs-notices#CP276B) ![5 Most Common Business IRS Notices](https://www.ledgerfi.co/hubfs/AI-Generated%20Media/Images/A%20realistic%20photo%20of%20a%20small%20business%20owner%20sitting%20at%20a%20desk%20in%20a%20modern%20office%20opening%20a%20letter%20clearly%20marked%20IRS%20or%20Important%20Tax%20Document%20with%20a%20concerned%20expression%20The%20desk%20has%20scattered%20papers%20a%20laptop%20a%20coffee%20cup%20and%20a%20smartphone%20Natural%20li.jpeg) × Need Help Fast? Talk to an Expert Instantly [** Call now ** ](tel:+18886026210) [ Schedule call ](https://meetings.hubspot.com/jeremy721/web-consultation?uuid=72d6ad92-b616-4404-8180-05ac0a3a20cd) Running a business is already a lot to manage—then an IRS letter shows up in your mailbox and throws you way off your game. But not every notice is a penalty or audit. In many cases, the IRS is just flagging something that needs attention.  Here are the **5 most common IRS notices sent to business owners**, what they mean, and where to learn more about how to respond.  1. ## ** CP2000 — Notice of Underreported Income ** This is one of the most common letters sent to both individuals and businesses. A **CP2000 **means the income reported on your tax return doesn’t match what third parties (like banks or clients) reported to the IRS.  The notice will usually propose additional taxes, plus interest and possibly penalties. Get the [full guide to CP2000](https://www.ledgerfi.co/irs-notice-library/cp2000-request-for-additional-information-to-process-your-return) →  1. ## ** CP171 — Notice of Amount You Owe in Tax, Penalty, and Interest ** A **CP171 **is a billing notice. It tells you exactly how much you owe the IRS, including your tax balance, any late payment penalties, and accrued interest.  This often follows a previous notice you might have ignored—or forgot to follow up on. It’s a sign you need to act quickly to avoid additional penalties or enforcement actions.  Get the [full guide to CP171](https://www.ledgerfi.co/irs-notice-library/cp171-notice-of-amount-you-owe-in-tax-penalty-and-interest) → ## Still Have IRS Questions? Talk to an expert directly! Call now at (888) 602-6210 [** Call now ** ](tel:+18886026210) 1. ## ** CP2100A — Incorrect or Missing TIN on 1099s ** If you filed Forms 1099-NEC, 1099-MISC, or 1099-INT, and the **name and TIN **don’t match IRS records, you’ll likely get a **CP2100A **notice. Sometimes it also means you submitted a 1099 without including a TIN at all.  This notice doesn’t mean you’re being fined—but it’s a warning. If you don’t correct the issue or follow up properly (with B Notices or backup withholding), penalties may follow.  Get the [full guide to CP2100A](https://www.ledgerfi.co/irs-notice-library/cp2100a-notice-of-possible-payee-name/tin-discrepancy) →  1. ## ** CP259 — You Didn’t File a Required Return ** A **CP259 **tells you the IRS expected a return (often a business income or payroll tax return), but **didn’t receive it**. It might be a mix-up in filing requirements or something more serious, like a missing Form 1120 or 941.  This notice is your opportunity to fix the issue before the IRS assesses a “substitute for return” or penalty.  Get the [full guide to CP259](https://www.ledgerfi.co/irs-notice-library/cp259-notice-of-failure-to-file-a-tax-return) →  1. ## ** CP276B — Federal Tax Deposit Penalty Waived** The **CP276B **is a warning notice, not a fine—yet. It means the IRS had a problem with your recent federal tax deposits. One or more of them were either late, insufficient, or not made using the required electronic method. You may have used paper when you were supposed to e-file, formatted something incorrectly, simply filed too late. Fixing the issue now can help you avoid penalties later.  Get the full guide to CP276B →  ## Still Have Questions? Talk to an expert directly! Call now at (888) 602-6210 [** Call now ](tel:+18886026210) [ Schedule a call ** ](https://meetings.hubspot.com/jeremy721/web-consultation?uuid=27a565c2-a1b5-4aab-857e-4f61ccf3f514) ## **Bottom Line: Don’t Let IRS Notices Pile Up** Ignoring IRS notices doesn’t make them go away. In fact, many of them are preventable or easily fixed with the right documentation and a quick response.  But the easiest way to avoid them altogether? Stay on top of your books! At LedgerFi, we help businesses file accurately, stay compliant, and keep clean records that stand up to IRS scrutiny.  Check out our [IRS Notice Library](https://www.ledgerfi.co/irs-notice-library) for more IRS notice breakdowns. From 1099s to payroll to quarterly filings—we’ve got your back.  Need help reviewing a notice or avoiding the next one? [Contact LedgerFi today](https://meetings.hubspot.com/jeremy721/web-consultation?uuid=ca861878-cb0c-4847-bcce-aac584da8203) and let’s make IRS mail a non-issue. ## Similar posts Tax Optimization ### [Understanding Tax Liability: What It Is & What It Means for Your Business](https://www.ledgerfi.co/resources/understanding-tax-liability-what-it-is-what-it-means-for-your-business) Learn what tax liability means for your business, how it's calculated based on entity type, and key tips to minimize what you owe at tax time. Nathan Hodgens Apr 21, 2025 Business Growth ### [Accounting vs. Bookkeeping: What’s the Difference & Why You Need Both](https://www.ledgerfi.co/resources/accounting-vs.-bookkeeping-whats-the-difference-why-you-need-both) What's the difference between accounting & bookkeeping? Learn how each supports your business & why you need both to stay compliant, and ready to... 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Nathan Hodgens Apr 18, 2025 ## Talk to a Small Business Advisor Today ```json { "@context" : "https://schema.org", "@type" : "BlogPosting", "author" : { "@type" : "Person", "name" : "Nathan Hodgens", "url" : "https://www.ledgerfi.co/resources/author/team-ledger" }, "dateModified" : "2026-04-13T19:06:24.972Z", "datePublished" : "2025-04-23T17:33:17.000Z", "headline" : "5 Most Common Business IRS Notices", "image" : [ "https://www.ledgerfi.co/hubfs/AI-Generated%20Media/Images/A%20realistic%20photo%20of%20a%20small%20business%20owner%20sitting%20at%20a%20desk%20in%20a%20modern%20office%20opening%20a%20letter%20clearly%20marked%20IRS%20or%20Important%20Tax%20Document%20with%20a%20concerned%20expression%20The%20desk%20has%20scattered%20papers%20a%20laptop%20a%20coffee%20cup%20and%20a%20smartphone%20Natural%20li.jpeg" ], "mainEntityOfPage" : { "@id" : "https://www.ledgerfi.co/resources/5-most-common-business-irs-notices", "@type" : "WebPage" }, "publisher" : { "@type" : "Organization", "logo" : { "@type" : "ImageObject", "url" : "https://www.ledgerfi.co/hubfs/ledger-logo-green%20(3).svg" }, "name" : "Ledger Fi" } } ``` ```json { "@context" : "https://schema.org", "@id" : "https://www.ledgerfi.co/#organization", "@type" : [ "AccountingService", "LocalBusiness" ], "address" : { "@type" : "PostalAddress", "addressCountry" : "US", "addressLocality" : "Cupertino", "addressRegion" : "CA", "postalCode" : "95014", "streetAddress" : "20065 Stevens Creek Blvd. Ste.B-1B" }, "areaServed" : [ { "@type" : "City", "containedInPlace" : { "@type" : "State", "name" : "California" }, "name" : "San Jose" }, { "@type" : "City", "containedInPlace" : { "@type" : "State", "name" : "California" }, "name" : "San Francisco" }, { "@type" : "City", "containedInPlace" : { "@type" : "State", "name" : "Illinois" }, "name" : "Chicago" }, { "@type" : "City", "containedInPlace" : { "@type" : "State", "name" : "California" }, "name" : "Irvine" }, { "@type" : "City", "containedInPlace" : { "@type" : "State", "name" : "Texas" }, "name" : "Austin" }, { "@type" : "City", "containedInPlace" : { "@type" : "State", "name" : "Arizona" }, "name" : "Phoenix" }, { "@type" : "City", "containedInPlace" : { "@type" : "State", "name" : "Florida" }, "name" : "Orlando" } ], "description" : "LedgerFi provides bookkeeping, payroll, and expert tax strategy coaching for small businesses. 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