It’s easier than you might think to under-report your income on a tax return without realizing it. Maybe you forgot about a side gig, or assumed a small payment didn’t count. Unfortunately, even innocent mistakes can raise red flags with the IRS.
TL;DR: Under-reporting income is often unintentional but can lead to IRS penalties, so track all income sources, file accurately, and don’t assume missing forms mean tax-free money. It pays to be thorough, and a trusted tax advisor in MA like JBS Corp can help ensure you get it right.
What Does “Under-Reporting Income” Mean?
Under-reporting means failing to include all taxable income on your tax return. It’s not just your paycheck, it also includes freelance work, bank interest, dividends, rental profits, retirement withdrawals, and even bartering or crypto gains.
If you assume something isn’t taxable when it is (like trading crypto or doing a one-off design gig) you could be flagged. The safest rule: when in doubt, report it or consult a tax professional.
Common Income Sources People Often Miss
Even conscientious filers can overlook certain income streams. Here are some common sources of taxable income that taxpayers often forget or undervalue:
- Side Jobs and Freelance Work: Gig earnings (Uber, Etsy, freelance work) are taxable, even without a 1099. If you earned money, the IRS expects to see it.
- Part-Time or Temporary Employment: Did you switch jobs or have a short-term gig last year? Missing a W-2 is one of the most common triggers for an IRS underreported income notice. Make sure you include wages from all jobs, even brief ones.
- Bank Interest and Investment Income: Banks and brokerages send Forms 1099-INT, 1099-DIV, and 1099-B. Even $10 of interest is taxable. Don’t skip reporting stock or fund sales, even if you lost money.
- Retirement and Debt Income: Distributions from IRAs or 401(k)s show up on Form 1099-R. Forgiven debt (like canceled credit card balances) is often taxable and comes on a 1099-C.
- Rental, Real Estate, and Other Miscellaneous Income: Selling property? You may receive a 1099-S. Renting out space? That’s taxable too. Also don’t forget cash payments or tips; they’re on you to report.
- Digital Payments and Online Sales: Apps like Venmo, PayPal, and eBay may send a 1099-K if you cross certain thresholds. Although the IRS delayed lowering the threshold to $600 federally, Massachusetts still requires a 1099-K for $600+. Regardless of forms, all income is taxable.
- Cryptocurrency and Digital Assets: Crypto trades are taxable just like stock trades. Selling, exchanging, or spending crypto creates a taxable event. Since 2023, the IRS requires you to answer a “digital assets” question on Form 1040. And starting in 2025, crypto brokers will issue a new Form 1099-DA. In short: the IRS is watching.
How the IRS Knows and What is a CP2000 Notice?
The IRS matches your tax return against third-party forms (W-2s, 1099s, etc.). If a 1099 or W-2 was filed under your name but doesn’t appear on your return, their system flags it.
You may receive a CP2000 notice, which isn’t a bill or audit, it’s more like a proposal. It will list unreported income and calculate the additional tax and interest. You can agree and pay, or respond with documentation if it’s incorrect.
In TY 2022, underreported income accounted for $539 billion in lost tax revenue. Normally, the IRS has 3 years to audit a return, but if you omit more than 25% of your income, the IRS has six years to audit. In cases of fraud? There’s no time limit.
Risks and Penalties of Under-Reporting Income
If you under-report income:
- You’ll owe more taxes, plus interest from the due date.
- If the IRS views it as negligence or a “substantial understatement,” they may add a 20% penalty.
- If it’s deemed fraud, the penalty rises to 75% of the underpaid tax.
- Repeated or intentional offenses can trigger criminal charges, but that’s rare for honest mistakes.
Under-reporting can also delay your refund or increase your chances of a full audit.
How to Avoid Under-Reporting
The good news is that under-reporting is preventable with some diligence. Here’s a handy checklist to make sure you capture everything and stay in the IRS’s good graces:
- Track All Income Year-Round: Use a spreadsheet, app, or accounting software (like Xero). Log payments, side gigs, crypto trades… everything should be recorded.
- Wait for All Forms: Don’t file too early. Make a checklist of expected W-2s, 1099s, 1099-Rs, and others.
- Review Forms for Errors: Compare reported amounts to your records. Contact issuers for corrections if something looks off.
- Report Even Without Forms: Didn’t get a 1099? Doesn’t matter. The income still counts.
- Stay Updated: Tax rules evolve. Answer digital asset questions honestly and keep up with thresholds and form changes.
- Ask for Help When Needed: If you have multiple income streams or received a CP2000, a tax professional can save you stress and money.
By keeping thorough records, reporting all income streams, and getting expert advice when needed, you can significantly reduce the risk of under-reporting your income. In turn, you’ll minimize those nasty surprises like CP2000 letters or penalty assessments.
Under-reporting income, even accidentally, can lead to IRS notices, tax bills, or worse. But with education and vigilance, you can avoid the common pitfalls. Stay informed on what’s taxable, be meticulous in reporting, and when in doubt, seek guidance from trusted professionals.
Contact us today to see how we can help with your tax strategy.
