TL;DR: Yes — all cash tips are taxable income, and if you take home $20 or more in tips in a month at one job you're required to report them to your employer by the 10th of the next month. Skip it, and you can owe back taxes, the 7.65% FICA on unreported tips via Form 4137, and a penalty of 50% of that FICA. But 2025–2028 flipped the incentive: the federal No Tax on Tips deduction (up to $25,000/return) only applies to tips that are reported. For most servers and bartenders, reporting cash tips now saves more federal income tax than hiding them ever did — if you have the records to back it up.
General information, not tax advice. The rules below come from IRS guidance for tipped employees (Publication 531 and Topic 761).
The actual rules, in plain English
| Situation | What the IRS requires |
|---|---|
| Any tips, any amount | Taxable income — belongs on your federal return |
| ≥ $20 tips in a calendar month (per employer) | Report the month's tips to your employer by the 10th of the following month |
| < $20 in a month | No employer report, but still goes on your return |
| Non-cash tips (event tickets, etc.) | Not reported to the employer, but taxable on your return |
| Tip-outs you pay to others | Subtract them — you report what you keep, and the busser reports what they receive |
Your employer uses your monthly report to withhold income tax and FICA and to put your tips on your W-2 (Box 7). That reported number is also what feeds the new tip deduction (below).
What happens if you don't claim them
Three separate costs, all of them worse than the tax itself:
- Back taxes plus Form 4137. Unreported tips get discovered in audits (POS card-tip records make the arithmetic easy). You'll owe the income tax and file Form 4137 to pay the uncollected Social Security and Medicare — the same 7.65% you'd have paid anyway.
- The 50% penalty. Fail to report tips to your employer as required, and the IRS can add a penalty equal to 50% of the FICA due on those tips, unless you show reasonable cause.
- The quiet cost: your own history. Social Security benefits, unemployment claims, apartment applications, car loans — all keyed to documented income. Every unreported cash tip is income that officially never happened.
Allocated tips: when your employer reports for you
Work at a restaurant with more than 10 tipped employees? It's probably a "large food or beverage establishment" that files Form 8027. If everyone's reported tips add up to less than 8% of food and drink sales, the employer must allocate the difference to employees — it lands in Box 8 of your W-2 with zero withholding, and you generally owe tax on it unless your own daily record proves your actual tips were lower. Translation: with no records, the 8% rule sets your number for you.
Why 2025–2028 changed the math
The No Tax on Tips provision (IRC §224) gives tipped workers an above-the-line federal deduction of up to $25,000 per return for tax years 2025–2028 — but only for qualified tips that were reported. A server who reports $18,000 of tips deducts $18,000 from federal taxable income. A server who kept the same $18,000 in cash off the books gets: no deduction, audit exposure, and the Form 4137 math above waiting at the end.
Reporting used to feel like a tax bill. Right now it's a discount — read the full breakdown in our No Tax on Tips 2026 guide, or estimate your savings with the tip tax deduction calculator.
The habit that makes all of this easy
Every rule on this page reduces to one practice the IRS itself recommends in Publication 531: a daily tip record — date, hours, cash, card, tip-outs. Keep it contemporaneously and you can report accurately, contest a bad Box 8 allocation, claim the full deduction, and survive an audit without sweating.
- Paper works. So does a spreadsheet. See how to keep a tip log the IRS will accept.
- Or make it a 3-second habit: TipScan reads your checkout slip with your phone camera — cash, card, tip-out, hours — and keeps the record, free.
Related reading: The $2.13 tipped minimum wage explained · How to read your server checkout