Getting an IRS notice can be scary, especially when it involves your crypto transactions and tax reporting. But not every IRS notice means you are being audited or accused of wrongdoing. Each notice triggers a different action:
- Letter 6174 generally asks you to review your crypto tax reporting
- Letter 6173 requires you to respond and provide information by a deadline
- CP2000 asks you to address a mismatch between your tax return and information reported to the IRS.
Knowing which notice you received, and what action it requires, is the first step toward responding correctly and avoiding unnecessary complications. The IRS is reviewing crypto activity more closely, and each notice points to a different type of follow-up. This guide explains what these letters mean and how to address them with confidence.
Key Takeaways
- IRS audits crypto due to underreporting, data sharing, and increased enforcement resources.
- Letters 6173, 6174, and CP2000 differ in urgency and required responses.
- Missing or mismatched crypto reporting can trigger notices, penalties, and full audits.
- Fix issues early by reviewing records, amending returns, and preparing documentation.
6173 vs 6174 vs CP2000: Key Differences
Here is a quick comparison of how these notices differ in purpose, urgency, and required actions:
Feature | IRS 6173 | IRS 6174 / 6174-A | CP2000 |
What is it? | Targeted crypto compliance letter | Crypto compliance reminder | Proposed tax adjustment |
Why did you get it? | IRS suspects your crypto reporting may be incomplete or incorrect | IRS has information suggesting you may have crypto reporting obligations | Your return doesn’t match information reported to the IRS |
Action required | Respond by the deadline | Review your crypto reporting | Agree or dispute the proposed changes |
If you need to correct something | Amend/file returns + provide requested information | Amend your return if needed | Follow the CP2000 response instructions and provide supporting records |
Bottom line | Respond & substantiate | Review & correct | Reconcile & respond |
What to Keep in Mind:
- 6173 is the most action-oriented: You need to respond to the IRS and address the compliance concerns raised.
- 6174/6174-A is primarily a warning: It does not require a response, but signals that you should review your crypto reporting and correct it if necessary.
- CP2000 is about a mismatch: The IRS is proposing a change based on information it received, so you need to verify the discrepancy and agree or dispute it.
- The notices can overlap in subject but not in purpose: A crypto-related 6173/6174 letter and a CP2000 can involve the same transactions, but they arise from different IRS processes.
Understanding IRS Notice 6173
As crypto adoption grows, the IRS is closely monitoring taxpayers who may have left crypto trades out of their tax filings. IRS Letter 6173 is the most serious crypto-related notice you can receive. It signals that the IRS has enough data to question your tax reporting and expects a clear response.
What is IRS Notice 6173?
IRS Letter 6173 is a compliance notice sent to taxpayers suspected of failing to report crypto transactions. Unlike other IRS crypto letters, this one requires action. If you ignore it, the IRS may escalate the matter through audits, penalties, or further enforcement.
Why Did You Receive a 6173 Notice?
The IRS may send Letter 6173 when it has information about your virtual-currency accounts and believes your tax or information reporting may not be complete. This could involve situations such as:
- You did not file a required tax return or applicable form reporting virtual-currency transactions.
- You reported crypto activity incorrectly, including income, gains, or losses.
- Information available to the IRS indicates that your virtual-currency activity may not match your tax filings.
Today, IRS visibility into digital-asset activity is also increasing as broker reporting requirements under Form 1099-DA apply to certain digital-asset transactions beginning with transactions in 2025. However, not every crypto transaction or platform is covered by these reporting rules.
Key Facts About IRS Letter 6173
- You must respond by the deadline stated in the letter.
- You have three options for your response: File a missing return, amend an incorrect return, or explain why your original filing was correct.
- Receiving 6173 does not mean an audit has already started.
- Failure to respond may lead to an IRS examination and potentially penalties or further enforcement.
Consequences of Ignoring IRS Letter 6173
Ignoring Letter 6173 can escalate the matter. The IRS states that failure to respond may lead to an examination of your tax return and, depending on the circumstances, potential civil fraud penalties or criminal prosecution. These consequences are not automatic and depend on the facts of the case.
The safest approach is to address the notice within the deadline specified in the letter.
How to Respond to IRS Letter 6173?
If you receive a 6173 notice, follow these steps:
- Review your tax return and crypto transactions.
- File an amended tax return using Form 1040-X if you missed reporting any income.
- Prepare supporting documents like exchange statements, wallet records, and profit/loss calculations.
- If your filings were correct, provide documentation to explain your reported income.
- Consulting a tax professional or using a crypto tax software platform like KoinX can help you gather the right documents and respond accurately.
Understanding IRS Notice 6174 and 6174-A
Not every IRS notice is an immediate threat, but none should be ignored. IRS Letters 6174 and 6174-A are designed to encourage voluntary compliance. While these notices do not demand a response, they serve as important reminders to review your tax filings and correct any mistakes related to crypto income.
What Are IRS Letters 6174 and 6174-A?
Letters 6174 and 6174-A are voluntary compliance letters for taxpayers with potential digital-asset reporting issues. The IRS sends them when it has information indicating that you may have had virtual-currency accounts or transactions that were not properly reported. Unlike Letter 6173, these letters do not require a response.
Key facts about 6174/6174-A:
- They do not require a mandatory response.
- The language advises you to voluntarily correct your tax return if you missed reporting crypto income.
- Don’t ignore the underlying issue. The IRS states that inaccurate digital-asset reporting may result in future civil or criminal enforcement activity.
Key Differences Between 6174 and 6174-A
Although both notices serve the same purpose, there are small differences in tone and wording:
Letter Type | Purpose | Language Style |
6174 | General reminder to check your crypto reporting | Informative and neutral |
6174-A | Stronger reminder suggesting possible errors | Slightly more urgent and advisory in tone |
What To Do After Receiving 6174 or 6174-A?
Even though these letters do not demand a reply, taking the right steps helps you avoid future problems:
- Review your prior tax returns for missed crypto transactions.
- Use crypto tax software like KoinX to reconcile your trade history with your filings.
- File an amended return (Form 1040-X) if you find income that was not previously reported.
- Maintain supporting documents to prove your crypto activity is accurately reported.
- Acting on these notices proactively can help you stay compliant and avoid the risk of receiving a more serious notice like 6173 later on.
Understanding IRS CP2000 Notice
The CP2000 notice is different from the crypto-specific 6173 and 6174 letters. It applies to any discrepancies the IRS identifies between your tax return and the information it has from third-party sources, such as exchanges, employers, or banks. If your reported crypto income doesn’t match the IRS data, you may receive this notice.
What Is a CP2000 Notice?
The CP2000 is given for any discrepancies the IRS identifies between your tax return and the information it has from third-party sources, such as exchanges, employers, or banks. If your reported crypto income doesn’t match the IRS data, you may receive this notice.
The CP2000 is a proposed adjustment notice, not a penalty letter. You are required to review the proposed changes and either agree or dispute them.
Key facts about CP2000:
- It’s not a final bill, but a proposal for tax adjustments.
- You must respond by the deadline stated in the notice.
- The IRS applies CP2000 to various income sources, including crypto.
Why Did You Receive a CP2000?
A CP2000 notice may be triggered by:
- Information reported by a third party does not match your tax return.
- Income or transactions reported to the IRS were omitted from your return.
- Information reported by multiple sources was not correctly reflected on your return.
- The information available to the IRS is incomplete or does not accurately reflect your actual tax position.
For crypto taxpayers, this could involve discrepancies between digital-asset information reported to the IRS and what was included on the tax return.
How to Respond to CP2000?
- Review the proposed adjustments against your tax return and records.
- If you agree, sign and return the response form by the deadline.
- If you disagree, explain the discrepancy and provide supporting documentation such as exchange statements, wallet records, and transaction reports.
- Don’t automatically file an amended return for the tax year covered by the CP2000. The IRS specifically instructs taxpayers to respond to the CP2000 rather than amend that year’s return. If the same error affects other tax years, amended returns for those years may be appropriate.
- Don’t ignore the notice: If the IRS cannot resolve the discrepancy or receives no response, it may issue a CP3219A, a statutory notice of deficiency.
IRS Crypto Tax Letter Response Timeline
The official IRS guidance focuses more on your required response time for these letters, rather than how quickly the IRS will process your reply.
Notice/Letter | Your Required Response Time | Estimated IRS Follow-up Time |
Letter 6173 | 30 days (Mandatory response) | 1 to 6+ months |
Letter 6174/6174-A | No response required (Review encouraged) | N/A (unless you file an amended return) |
CP2000 | 30 days (Mandatory response) | 1 to 6+ months |
What Should Crypto Investors Do After Receiving An IRS Notice?
3-Step Response Plan To IRS Notice
Before reacting to an IRS crypto notice, take a structured approach so you respond correctly and avoid unnecessary penalties.
1) Read the Notice and Check the Deadline
Go through the letter line by line and note the exact response date. Ignoring the notice can lead to additional assessments, so keep the timeline in focus.
2) Compare Your Return With IRS Records
Review your tax return alongside exchange statements, Form 1099s, and your crypto tax report. Make sure every trade, sale, and income event matches what the IRS may have received.
3) Amend or Confirm Your Filing
If you spot errors or missing activity, file an updated return using Form 1040-X. If everything is accurate, reply to the IRS with the documents that support your reported numbers.
What Penalties Can You Face If You Ignore These IRS Notices?
If the IRS sends you a letter, open it and answer right away! Ignoring such letters will lead to penalties like:
Notice/Letter | Severity | Action if Ignored | Potential Penalties |
6173 | Most Serious (Mandatory Response) | May be referred for audit/examination | 20% accuracy-related penalty; up to 75% civil fraud penalty in applicable cases |
6174 / 6174-A | Informational (No immediate response required) | May increase risk of future IRS compliance action | No penalty for the letter itself; applicable tax penalties may arise if underreported tax remains unpaid |
CP2000 | Serious (Mandatory Response) | May lead to a notice of deficiency and eventual tax assessment | 20% accuracy-related penalty + interest, where applicable; other penalties may also apply |
How KoinX Helps Simplify Crypto Tax Compliance in the USA?
Receiving an IRS notice often means going back through years of crypto activity to determine what was reported, what was missed, and whether the IRS’s information matches your records. KoinX can simplify this process by bringing that information together in one place. It can:
- Consolidate your crypto records across exchanges, wallets, and blockchains into one dashboard.
- Identify missing or misclassified transactions and flag unusual or incomplete records before they become filing issues.
- Track cost basis and gains/losses
- Maintain the transaction-level information needed to calculate taxable gains accurately.
- Generate IRS-ready reports. KoinX generates reports including Form 8949 and Schedule D, which can be reviewed with your tax professional or used during tax filing.
Conclusion
Getting an IRS crypto-related notice can feel alarming, but knowing what you’re dealing with makes the next step much clearer.
- 6173 requires a response
- 6174/6174-A calls for a review of your reporting
- CP2000 asks you to reconcile a proposed discrepancy.
The common thread is accurate records: you need to know what you bought, sold, transferred, earned, and ultimately reported.
With accurate records and tools like KoinX, you can quickly resolve issues and prove compliance. Get started with KoinX today and resolve your crypto tax notices with ease.
Frequently Asked Questions
Can I Ignore A CP2000 Notice From The IRS?
No, you should never ignore a CP2000 notice. It requires a response, either agreeing with the proposed tax adjustment or disputing it with supporting documents. Ignoring this notice can lead to automatic tax adjustments, additional penalties, and interest charges on the unpaid amount. Prompt action helps resolve discrepancies efficiently.
What Happens If I Already Reported My Crypto And Still Got A Notice?
If your crypto income was already reported, the IRS notice may result from incomplete exchange data or reporting mismatches. Review your transaction records and tax return to confirm accuracy. Respond to the notice with supporting documents to clarify your position. If needed, consult a crypto tax professional.
Does The IRS Track Crypto Trades From Foreign Exchanges?
Yes, the IRS receives data from both domestic and some foreign exchanges, especially those required to comply with US tax laws. Platforms like Binance have begun reporting user activity. Even trades from foreign exchanges are subject to US tax reporting, and failing to disclose them may trigger IRS scrutiny.
How Do I File An Amended Tax Return For Crypto Income?
You can file an amended return using IRS Form 1040-X. This form allows you to correct your original return by adding your unreported crypto income. Attach the necessary supporting documents, including profit and loss calculations. Filing an amended return quickly helps reduce penalties and interest on unpaid taxes.
