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Understanding Form 4137 for Unreported Tips: A Guide for Tipped Workers and Employers

Adam West
Adam West

Small-Business Columnist · 6/27/2026

Greetings, fellow entrepreneurs and tipped workers! As your Small-Business Columnist, I'm here to guide you through the complexities of U.S. tipped-income taxation, a crucial aspect of payroll tax compliance for tipped workers and their employers. Let's dive into the world of Treasury Tipped Occupation Codes and Form 4137, shall we?

Navigating U.S. Tipped-Income Taxation: What Employers Need to Know

When it comes to reporting tipped income, employers play a critical role in ensuring compliance with the IRS. According to the IRS, employers must use Treasury Tipped Occupation Codes to identify tipped workers and report their income accurately (https://www.irs.gov/forms-pubs/about-form-4137). This includes reporting tips received from customers, as well as tips received from credit card companies, such as those from merchant service fees (https://home.treasury.gov/). Let's consider an example: John, a bartender, receives $25,000 in tips from customers, but he only reports $15,000 on his tax return. In this scenario, John's employer would need to report the additional $10,000 in unreported tips on Form W-2, using the correct Treasury Tipped Occupation Code.

Now, let's take a look at the process of calculating unreported tips on Form 4137. To do this, you'll need to report all tips received during the year, including tips reported on Form W-2 and tips reported on a Form 4137 from previous years. You'll also need to report any tips received from credit card companies, such as those from merchant service fees.

  • Report all tips received during the year
  • Report tips received from credit card companies
  • Use Form 4137 to calculate the additional tax due on unreported tips

Here's a step-by-step guide to calculating unreported tips on Form 4137:

StepDescription
1Report all tips received during the year
2Report tips received from credit card companies
3Calculate the additional tax due on unreported tips using Form 4137

Tipped Income Taxation: Key Takeaways

Key Takeaways

  • Employers must use Treasury Tipped Occupation Codes to identify tipped workers and report their income accurately.
  • Employers must report tips received from customers and credit card companies on Form W-2.
  • You can use Form 4137 to calculate the additional tax due on unreported tips.

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Informational only — not tax advice. Verify with a qualified professional or the IRS before acting on it.