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Dealing with IRS Audit Letters: Unreported 1099-B Transactions


Content provided for general information. Talk to your advisor to learn about recent updates or other rules that may apply to your situation.

Receiving an audit letter from the IRS can be a stressful and perplexing experience, as it may seem like you're being accused of failing to report income that you believe you've properly documented on your tax return. In your case, you've encountered a situation where the IRS has identified seven transactions from your 1099-B that weren't reported on your 2021 tax return. After carefully comparing your 1099-B from Morgan Stanley to your tax return, you found that all the transactions were indeed included, raising the question of what exactly went wrong. This blog post aims to shed light on this issue and guide you through the steps you should take to address it.

Understanding the Audit Letter

The first step in addressing this situation is to fully understand the audit letter you received from the IRS. These letters are typically detailed and can contain complex language, making it essential to read them carefully. In your case, the IRS has identified seven transactions from Morgan Stanley that were not reported on your tax return. However, you've confirmed that these transactions were indeed included on your 1099-B.

Possible Reasons for the Discrepancy

When the IRS sends an audit letter, they are usually acting on information that is available to them. However, mistakes can happen, and it's important to consider various possibilities for the discrepancy:

a. 1099-B Issuing Errors: It's possible that Morgan Stanley made an error when issuing your 1099-B, resulting in missing transactions. Such errors can occur due to various factors, such as software glitches or human oversight.

b. IRS Data Matching Errors: Sometimes, the IRS's automated system might not correctly match the information on your tax return with the 1099-B. This can lead to incorrect audit letters being sent out.

c. Reporting Timing: The timing of when the IRS receives information from financial institutions might differ from when you file your tax return. Delays in information reporting could lead to discrepancies.

d. Missing Forms: You should also check if there were other forms related to these transactions that need to be included in your tax return. For example, you may have received 1099-DIV or 1099-INT forms that are relevant.

Reviewing Your Documentation

Before taking any action, it's essential to gather all relevant documentation, including your 1099-B, your 2021 tax return, and any other forms you may have received. Review these documents carefully to ensure that you didn't overlook any transactions or make errors when filing your taxes.

Contacting a Tax Professional

If you're unable to identify the source of the discrepancy or are uncertain about how to proceed, it's highly advisable to consult with a tax professional. They have the expertise to navigate complex tax situations and can provide valuable guidance on how to address the issue. A tax professional can also help you assess whether an appeal is necessary and guide you through the process if it is.

Preparing for an Appeal

If you and your tax advisor determine that an appeal is warranted, you should be prepared to present a strong case. This may involve gathering evidence, such as bank statements, emails, or other documents that can help prove that you reported your income accurately. Your tax advisor can help you with the specifics of building your case and the documentation you'll need.

Responding to the IRS

After consulting with a tax professional and, if necessary, preparing for an appeal, you should respond to the IRS within the specified timeframe. It's crucial to maintain open communication with the IRS and follow their instructions during the process. Failing to respond could result in more serious consequences.

Staying Informed

Throughout the audit and appeal process, it's vital to stay informed about the status of your case and any updates from the IRS. Your tax advisor can help keep you apprised of developments and guide you through the steps required.


Receiving an audit letter from the IRS is a daunting experience, especially when you believe you've accurately reported your income. In your case, where seven transactions from your 1099-B don't match IRS records, it's essential to carefully review your documentation, consult with a tax professional, and be prepared for potential appeals. Mistakes can happen, but with patience and professional guidance, you can navigate this challenging situation and resolve any discrepancies.

Remember, while this post provides general information and guidance, you should always consult a qualified tax advisor for personalized assistance in your specific case. They will be able to offer professional advice tailored to your unique circumstances.