Tips you already reported to your employer are included in Box 1 of your W-2 and go on Form 1040, Line 1a with the rest of your wages. Tips you didn’t report to your employer, along with any allocated tips shown in W-2 Box 8, go on Form 1040, Line 1c after being calculated on Form 4137. The Social Security and Medicare tax that Form 4137 generates lands on Schedule 2, Line 5. That is where tips go on your tax return. For tax years 2025 through 2028, a separate federal deduction of up to $25,000 in tip income may reduce the income tax you owe on those same tips, but it does not change where the tips get reported.1Congress.gov. S.129 – No Tax on Tips Act 119th Congress (2025-2026)
Reading Your W-2 Tip Boxes First
Before you touch Form 1040, look at three boxes on your W-2. Each one tells you something different about what you owe and where the number belongs.
- Box 1, wages, tips, other compensation, already contains the tips you reported to your employer during the year, combined with your hourly pay. This is the figure you carry to Form 1040, Line 1a.2Internal Revenue Service. Tips
- Box 7, Social Security tips, shows the portion of your reported tips that was subject to Social Security withholding. Nothing from Box 7 gets entered separately on your return; use it to check that your employer withheld correctly.
- Box 8, allocated tips, appears only if you work at a large food or beverage establishment where the employer determined the tips you reported looked low relative to total sales. Allocated tips are not included in Box 1, which is why they require separate handling.3Internal Revenue Service. Tip Recordkeeping and Reporting
If Box 8 has an amount in it, that money has not been taxed for income, Social Security, or Medicare purposes. You generally have to add it to your income on Line 1c and run it through Form 4137. The exception: if your own daily tip records prove you actually received less than the allocated figure, you can report the lower amount you actually earned.
When You Need to File Form 4137
Form 4137 has two triggers. You need it if you received $20 or more in tips during any calendar month at a single job and didn’t give your employer the full amount in your monthly tip report, or if you have allocated tips in W-2 Box 8.4Internal Revenue Service. Form 4137 Social Security and Medicare Tax on Unreported Tip Income The form does two things at once: it identifies the tip income you still need to add to your return, and it calculates the payroll tax you owe on that income.
You start by entering total tips for the year across all employers, then subtract the amounts already included in your W-2 wages. The difference is unreported tip income. That figure gets multiplied by the employee share of payroll taxes, 6.2% for Social Security and 1.45% for Medicare, for a combined 7.65%.5Internal Revenue Service. Topic No. 751, Social Security and Medicare Withholding Rates For 2026, Social Security tax only applies to combined wages and tips up to $184,500; above that cap you owe no additional Social Security tax, though Medicare has no ceiling.6Social Security Administration. Contribution and Benefit Base
If you worked more than one tipped job, you complete a separate section for each employer, using the name and identification number from W-2 Box b. Filing this form accurately is what makes sure the Social Security Administration credits your full earnings toward future benefits.
Non-cash tips such as event tickets, gift cards, or merchandise are not reported to your employer, so they never appear in your W-2. You still owe income tax on their fair market value, and they belong in the total you carry through Form 4137.
The Line-by-Line Placement on Form 1040
Once your W-2 is in hand and Form 4137 is complete, the entries on your return fall into place:
- Line 1a on Form 1040: your W-2 Box 1 wages, which already include the tips you reported to your employer.7Internal Revenue Service. Form 1040 – U.S. Individual Income Tax Return
- Line 1c on Form 1040: the unreported tip income calculated on Form 4137, including any allocated tips from Box 8 that you must report.4Internal Revenue Service. Form 4137 Social Security and Medicare Tax on Unreported Tip Income
- Line 1z on Form 1040: the total of Lines 1a through 1h, rolling all your wages and tips together for income tax purposes.7Internal Revenue Service. Form 1040 – U.S. Individual Income Tax Return
- Schedule 2, Line 5: the Social Security and Medicare tax figured on Form 4137. This is a separate liability from your income tax and adds to your total tax.8Internal Revenue Service. Schedule 2 (Form 1040)
One more line item can affect high earners. If your combined wages and tips exceed $200,000 as a single filer or $250,000 filing jointly, an Additional Medicare Tax of 0.9% applies to the amount above the threshold, and tips are included in that calculation.9Internal Revenue Service. Questions and Answers for the Additional Medicare Tax
What the 2025–2028 Deduction Changes
The One Big Beautiful Bill Act, signed into law on July 4, 2025, created a deduction of up to $25,000 per year for tip income, covering tax years 2025 through 2028.10Bipartisan Policy Center. How Does No Tax on Tips Work in the One Big Beautiful Bill The deduction reduces the federal income tax on qualifying tips. It does not change how tips are reported, and it does not remove Social Security or Medicare tax on those same tips.
The practical consequence: your tips still go where they always went. Reported tips still flow through Box 1 to Line 1a. Unreported and allocated tips still get calculated on Form 4137 and entered on Line 1c, with payroll tax on Schedule 2, Line 5. The deduction operates further down the return after that income is on the books. Skipping the reporting because you heard “no tax on tips” produces penalties, not savings.
Records That Back Up the Numbers on Your Return
The IRS requires employees to keep a daily record of tips received.3Internal Revenue Service. Tip Recordkeeping and Reporting Publication 1244 contains Form 4070A as a ready-made template, but a notebook, spreadsheet, or app that captures the date, amount, and source of each tip works too. The log should include cash left on tables, amounts added to credit or debit card receipts, your share of any tip pool, and the fair market value of any non-cash tips.
The daily log is what tells you whether the tips in your W-2 match what you actually earned. If they don’t, the log is the source of the number you carry to Form 4137. It is also the record that lets you report less than an allocated amount in Box 8 when the allocation overshoots what you took home. Keep the log, your monthly reports to your employer, your W-2s, and your filed Form 4137 for at least three years after filing, which matches the general IRS statute of limitations for assessing additional tax; if income is substantially underreported, the window extends to six years.11Internal Revenue Service. Topic No. 305, Recordkeeping
What Happens If Tips Are Left Off
The IRS imposes a penalty equal to 50% of the Social Security and Medicare tax owed on tips you failed to report to your employer, on top of the tax itself.12Office of the Law Revision Counsel. 26 U.S. Code 6652 – Failure to File Certain Information Returns, Registration Statements, Etc. Underreporting tip income on your return itself can trigger a separate accuracy-related penalty of 20% on the resulting underpayment.13Internal Revenue Service. Accuracy-Related Penalty
Relief is possible if you can show reasonable cause, meaning a genuine effort to comply and no willful neglect.14Internal Revenue Service. Penalty Relief for Reasonable Cause The IRS looks at the complexity of the situation, the steps you took to understand your obligations, and whether you relied on qualified advice. Simple forgetfulness rarely qualifies, which is another reason the daily log matters: it’s the evidence that you were tracking tips honestly, and it’s the document you’ll reach for when the numbers on your W-2 and your return need to line up.