What Is IRS Form 4137?

IRS Form 4137 Explained

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Form 4137 reports an employee's tip income to the IRS if that income hasn't already been reported to their employer. Employees who receive tip income are normally required to report that money to their employers for tax purposes if the tips are more than $20 a month. Their employer should then calculate tax withholding on these amounts.

What Is IRS Form 4137?

IRS Form 4137 calculates the Social Security and Medicare Tax you owe on tips that you receive, but from which these taxes have not already been withheld.


The IRS likes to be paid when you get paid or not long after. It imposes a "pay as you go" timetable, even for self-employed individuals who must remit quarterly estimated taxes.

You must file Form 4137 with your tax return if any amount appears in box 8, "Allocated Tips," of your W-2 statement. Unfortunately, in some cases, reporting and paying tax on allocated tips can create a significant tax bill. You could potentially end up having to pay a penalty if you pay late because taxes weren't withheld by your employer at the time you received the tips.

IRS Form 4137 for 2021 tax year

Who Uses Form 4137?

Employees who have not reported tip income to their employers for purposes of withholding must use Form 4137 to reconcile the situation at tax time. The form is subject to several rules.

You don't have to report tips totaling less than $20 per month per employer on Form 4137. Otherwise, you should report your tips in excess of $20 to your employer by the 10th day of the month following the month in which you earned them.

This $20 limit is calculated for each employer separately if you work for more than one employer. You wouldn't have to report your tips to either employer if you earned $19 from one job and $15 from another because neither amount exceeds $20.

Allocated tips must be assigned to you by your employer as income if you don't report sufficient tips over the course of the tax year. The IRS requires that your employer do this if three factors are met:

  • You work in a food or beverage establishment
  • It's customary that you receive tips from your customers
  • You reported tips that amounted to less than 8% of your share of the establishment's food and drink sales.

These tips will appear in box 8 of your Form W-2. Your employer must assume that you made at least 8% of sales in tips and must report that income to the IRS. They should report the difference if you've reported less than 8%, or the entire 8% if you've reported no tip income at all.


Tips that you did report to your employer should appear in box 7 of your Form W-2, "Social Security Tips."

Where to Get Form 4137

The IRS makes Form 4137 available on its website, complete with instructions. You can fill it out online and download it, or you can print it out. It's recommended that you download and save an electronic file, or at least keep a completed paper copy, so you have it on hand and can refer to it if the IRS should have any questions.

How to Fill out Form 4137

IRS Form 4137 might have some ominous implications, but it only has 13 numbered lines and five lettered lines, so filling it out is at least somewhat manageable.

Line 1 identifies the company or companies to which you didn't report tips, along with their employer ID numbers. You must also enter the total tips you received from working for each company, including those both reported and unreported.

Total up all the tips you received on line 2. These include:

  • Tips you reported to your employer
  • Tips received in cash
  • Tips received by credit card
  • Tips you did not report to your employer
  • Tips less than $20 per month that you were not required to report to your employer
  • Any allocated tips from Box 8 of your W-2

Write in the total amount of tips reported to your employer on line 3. You can find the number in box 7 of your W-2.

Subtract line 3 from line 2, and enter the result on line 4. These are the additional tips you must include in your wages on line 1 of Form 1040. These are the additional tips on which you must calculate your Social Security and Medicare taxes.

Total up all the cash tips that were less than $20 per month, which you weren't required to report to your employer. Enter this number on line 5.

Subtract line 5 from line 4, and enter the figure on line 6. Those are the tips that are subject to Medicare tax.

Line 7 should already be filled in with the Social Security wage base of $147,000 for the 2022 tax year, the return you'd file in 2023. The wage base increases to $160,200 for the tax year 2023. You don't have to pay Social Security tax on earnings over that amount per year, so you don't have to do anything there.


The Social Security wage base increases annually to keep pace with inflation.

Add up all wages reported on your W-2 statements in boxes 3 and 7, as well as any tier 1 railroad retirement benefits. These are the wages subject to Social Security tax. Enter the total figure on line 8.

Subtract line 8 from line 7, and enter the result on line 9. The result will be a negative number if the amount on line 8 is over the 2022 wage base of $147,000. Put "-0-" (zero) on lines 9 and 10 if this is the case.

Compare the figures on lines 6 and line 9. Report the smaller of the two figures on line 10. Those are the additional tips that are subject to Social Security tax.

Multiply line 10 by 0.062, which is the Social Security tax rate of 6.2%.

Multiply line 6 by 0.0145, which is the Medicare tax of 1.45%.

Add lines 11 and 12 together, and enter the total on line 13. This is your additional Social Security and Medicare tax. You must also enter the figure on line 5 of Schedule 2 of your Form 1040 tax return. The total from this Schedule transfers to line 23 on Form 1040.

Can Form 4137 Be E-Filed?

Form 4137 must accompany your Form 1040 tax return when you file it, so it can be e-filed along with your return. The IRS provides various e-file options on its website.

Where to Mail Form 4137

IRS mailing addresses for Form 1040 and its accompanying forms and schedules depend on your state of residence, as well as whether you're also enclosing payment. The IRS provides a list of applicable addresses on its website.

Requirements for Filing Form 4137

Having allocated tips reported on your W-2 in box 8 is generally not in your best interest. Be prepared to explain to the IRS how you calculated your tip income if you have allocated tips and you've elected not to report the full amount on Form 4137.

Take a look at your record of daily tips. Get in the habit of keeping such a record if you don't have one. The IRS more or less requires that you do so. You'll need a record of what you actually received if you're ever audited on your tip income.


Your system doesn't have to be fancy. Just note your daily tips on a calendar, a day planner, or in a little notebook.

Add up the total amount of tips you received for the year. Did you report that amount to your employer? Look at your W-2. Does box 7 (Social Security tips) and box 8 (allocated tips) add up to the same amount in your daily record? Are your allocated tips in box 8 more than, the same as, or less than the total tips you recorded in your daily log?

You can use your daily log instead of the amount reported as allocated tips if your allocated tips are more than what's recorded in your daily log. However, be prepared for a lot of mail from the IRS and a tip audit. Keep your daily record of tips with your tax return so that you're ready when and if an IRS auditor asks to see your records.

Use the amounts from your daily records to fill out Form 4137 if there are any additional unreported tips.

Your employer probably reported the amount in the wrong place if your allocated tips are the same as what's recorded in your daily log and you did report them to your employer. Ask your employer whether that amount should have been reported in box 7 for Social Security tips instead of box 8.


You can go ahead and fill out Form 4137 using the figure in box 8 if your employer won't correct your W-2.

Something is probably wrong with your employer's recordkeeping system if your allocated tips are less than what's recorded in your daily log, and you reported your tips to your employer. You should report the allocated tips on Form 4137, plus any additional tips you show in your daily records. Ask your employer to correct your W-2.

Ask your employer how they calculated your allocated tips if you didn't keep a record of your tip income. Ask to see computer records, daily or weekly sales reports, or other information that would show your sales and your tips. You'll have to proceed very carefully and start keeping your own daily records to protect yourself if your employer refuses to share that information with you.

The IRS requires that you accept and report the amount stated in box 8 if you have no records to substantiate that the amount is incorrect.

Key Takeaways

  • IRS Form 4137 is used to report to the IRS any tip income that appears in box 8 of your Form W-2, "Allocated Tips."
  • Your employer must allocate tips to you if you work in a food or beverage establishment, if you regularly receive tips, and if you reported receiving tips to your employer that were less than 8% of your share of the establishment's food and drink sales.
  • You must pay Medicare and Social Security taxes on this income, so it must be reported on Form 4137 if your employer hasn't already withheld taxes from your income to cover these tips.
  • Form 4137 calculates the Medicare and Social Security taxes you would owe.

Frequently Asked Questions (FAQs)

Is it illegal not to report tips?

Yes. If you file to report tips, the IRS may impose fines. There may be consequences at the state level as well, depending on how your state treats tip income.

Do I have to report tips when filing taxes?

If you receive more than $20 in tips in any calendar month, you must report these to your employer in writing.

Why do I have to report tips to my employer?

Your employer is required by law to withhold a certain amount of wages for payroll taxes, including Social Security and Medicare. These are based on a percent of your income, which includes tips.

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The Balance uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.
  1. Northshore School District. "2018 Notice to Employee."

  2. Social Security Administration. "Special Rules for Cash Tips After 1965."

  3. Internal Revenue Service. "Tip Recordkeeping & Reporting."

  4. Internal Revenue Service. "Frequently Asked Questions/Tips."

  5. Internal Revenue Service. "Topic No. 761 Tips - Withholding and Reporting."

  6. Social Security Administration. "Contribution And Benefit Base."

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