That cash tucked into the jar by the register feels like a small win after a long shift.
But here's the part a lot of workers don't think about until spring: the IRS counts most of it as taxable income, and it always has.
If you work in a restaurant, coffee shop, salon, or bar, tips are generally treated the same as wages for federal tax purposes.
That means they're subject to income tax and, in most cases, Social Security and Medicare taxes too.
Cash tips, card tips, and even that $20 a customer hands you directly all fall under the same rule.
The threshold that trips people up is small.
If you earn $20 or more in tips in a single month while working for one employer, you're supposed to report the total to that employer by the 10th of the following month.
Employers then withhold taxes on those reported tips and include them on your W-2.
Plenty of workers don't report smaller amounts, figuring the IRS will never notice.
But the agency has gotten sharper about matching reported tip income against card transactions, which leave a clear digital trail.
A 2024 report from the Treasury Inspector General for Tax Administration estimated that tip underreporting costs the government billions each year, and enforcement attention has followed.
If your employer can't cover the taxes owed on your reported tips from your regular paycheck, you can ask them to withhold from future wages, or you may need to make an estimated quarterly payment to avoid a surprise bill.
Workers who receive more than $20 in tips a month but don't report them to their employer still owe the taxes — they just handle it themselves come filing season.
Allocated tips add another wrinkle for larger restaurants.
Some establishments are required to assign a portion of total tips to certain employees when their reported tips fall below a set percentage of sales.
That allocated amount shows up on your W-2 and gets taxed even if you never actually pocketed that money, which has frustrated servers for years.
Self-employed workers — think rideshare drivers, freelance dog walkers, or anyone getting paid through a gig app — follow a different path.
Their tips count as self-employment income, meaning they cover both the employee and employer halves of Social Security and Medicare, plus income tax.
Keeping a running log of every tip throughout the year is the simplest way to avoid a scramble in April.
There's also a legitimate reason to report everything: your tip income builds your Social Security record, which affects future benefits.
Underreporting now can quietly shrink what you're owed decades later.
And if you ever need to prove income for a mortgage, rental application, or car loan, reported tips count in your favor while cash under the table does not.
Track tips daily in a notes app or spreadsheet, report monthly to your employer, and set aside a rough 15 to 30 percent of tip income depending on your bracket and state.
If your situation is complicated, a tax preparer or free IRS Volunteer Income Tax Assistance site can sort out the details.
The short version: cash tips feel invisible, but they're not.
Final Thoughts
Treating them like the wages they legally are keeps you out of trouble and protects benefits you'll want later.