The Highlights
- The IRS tracks online income through tools like:
- The Automated Underreporter program
- Tracking financial flows through T-account analysis, bank deposit analysis, business financial ratios, and information statement matching
- Tracking website and ecommerce activity
- …and more.
- Being aware of these tools and of your federal/income tax obligations is key to avoiding late fees and other penalties.
We’ve all heard the phrase ‘The IRS is always watching, ’ and true as that may be, many sellers have no idea how that actually works. Whether you’re an ecommerce business selling on Amazon, Shopify, or your very own website, you’ll need to know how the IRS is tracking your income so you can avoid those pesky fees and the endless paperwork.
Find out everything you need to know with this RJM Tax Exemption blog.
How The IRS Tracks Your Online Sales Income
We hate to be the bearers of bad news, but the IRS absolutely knows when and how you’re trying to keep your real sales income under wraps. Here’s how the agency tracks your sales even if you never file a report, whatever platform you’re selling on.
1099-K Forms
Marketplaces like Amazon and eBay, along with payment processors like Stripe, PayPal, and Venmo Business, are obligated to report gross payment amounts for any seller that exceeds $2500 in annual payments. However, in 2026, this threshold will be lowered to $600.
The 1099-K form, issued by these platforms, contains a wide range of details about your ecommerce activity that help the IRS track your online sales income, including:
- All transactions processed
- Sales and refunds
- Fees paid, if any
Note that personal payments (such as sharing a meal) don’t come under the 1099-K threshold. You should report these as personal payments when using a payments app for easier income tax filing.
The Automated Underreporter (AUR) Program
The AUR program is the IRS’s front-line defense against tax evasion and plays a key role in its tracking process.
It all comes down to cross-referencing. The IRS has access to a massive amount of information about your online sales activity and the documentation around it. This includes the 1099-K form we mentioned above, along with the W-2 form and more.
The IRS tracks your online sales income by cross-referencing your sales activity with the documentation in their database, after matching your account to you with your Social Security Number. Along with T-account analysis, this cross-referencing can reveal underreporting, omissions, and mistakes in sales tax returns.
Social Media Cross-Referencing
The IRS also works with major social media platforms like Facebook and Instagram to identify underreporting during audits. For example, if your social media profile or a profile connected to your business shows you’ve been selling vintage clothing or making luxury purchases, this can indicate business formation and active operation.
The IRS can track your online sales income by using this information to estimate sales volume and revenue potential. This is particularly important for sellers who have side gigs that they might not be reporting accurately. Along with the automated underreporter, this is a key tool in the IRS’s arsenal.
Bank Account Deposit Analysis
Bank deposits can paint a pretty picture even without sophisticated tools like the AUR program or social media referencing. The IRS has the power to examine all deposits into your personal and business bank accounts to identify unreported or underreported income. How does that work?
- Auditors can total your gross deposits.
- They can then subtract nontaxable expenses like refunds and loans.
- The remainder can then be compared to your reported income.
When the IRS tracks your online sales income, this tool is particularly handy for cash-heavy businesses that might not rely as much on online payment platforms like Stripe.
Website and Ecommerce Activity
Your ecommerce activity is a critical part of your digital footprint, especially as an ecommerce business. The IRS routinely looks at marketplaces like Shopify stores and even social media ads to understand revenue potential and identify unreported income.
In case of suspicious accounts, the agency can also subpoena platforms for more information. For example, a business with a record of massive, frequent listings with minimal income could raise red flags for the IRS.
T-Account Analysis
This is a more indirect way the IRS can track your online sales income. This is more of a ‘bigger picture’ method where the IRS will attempt to reconstruct your financial flows, using tools like the automated underreporter and information from bank deposits.
A t-account essentially lists all known sources of funds and shows the flow of those funds from the buyer to the seller. This income and expenditure can be totalled to reveal discrepancies when compared to your sales tax filing and other documentation.
Information Statement Matching
This tool is similar to the AUR program mentioned earlier. Income matching allows the IRS to track your online sales income by cross-referencing your filed tax returns against the W-2 and 1099-K. This is more of a manual process that can quickly reveal a mismatch.
Business Financial Ratios (BFRs)
BFRs are an excellent tool when the agency has to audit larger businesses or businesses with complex financial flows, allowing them to identify irregularities at a glance.
These ratios are derived from industry benchmarks and tax data, allowing the IRS to compare your financial performance against the typical standards that a similar business in your industry might show.
If your BFRs deviate from these benchmarks, it could signal underreporting, prompting further investigation.
Common Mistakes Sellers Make
Now that you know how the IRS tracks online sales income, let’s look at a few common mistakes sellers make when reporting income.
- Tools like the automated underreporter can quickly catch underreported income from Stripe, PayPal, and more. Even personal transfers above the threshold can sometimes trigger the 1099-K form if you don’t file properly.
- Ignore your social media trail at your own peril, as this can easily be used to estimate your income and referenced against sales tax filings.
- Misusing tax exemptions and misreporting business expenses are a fast way to get on the IRS’s radar.
Simplify Income Tax Compliance Today
The IRS tracks your online sales income through t-account analysis, bank deposit analysis, and a wide range of different tools. Even sales tax information can come under the scanner during an audit, leading to potential penalties and back payments.
Compliance doesn’t have to be difficult, whether you’re selling on one platform or many. RJM Tax Exemption helps business owners with hassle-free compliance through comprehensive tax services, along with a price-match guarantee and phenomenal customer service. Get a consultation today!
Frequently Asked Questions
How does the IRS track my income?
The IRS can track your online sales income with the AUR program, bank statements, the 1099-K form, and information from ecommerce and payment platforms.
What is a 1099-K form?
The 1099-K form is automatically sent to the IRS and the account holder when a seller’s gross receipts on a platform like PayPal or Stripe exceed $600 annually. This can be used by the automated underreporter to identify mistakes.
Does the IRS monitor social media, too?
Yes. Social media information can be used, if necessary, to estimate revenue potential and underreporting.
