Side income comes with tax that no employer withholds for you. These guides explain self-employment tax, how much to put aside each month, the quarterly payment dates, and how a 1099 rate compares with W-2 pay.
Side income guides
Car Side Hustles: What You Really Take Home
Driving for extra cash looks simple until car costs and taxes bite. Kiplinger highlights the real expenses that eat into your vehicle side income.
Driving for work in 2026: which miles cut your tax
Kiplinger's tax editor explains which work miles count in 2026. We show what that means for side gig drivers and W-2 employees, and what to log now.
The ECB euro rate is not the rate you get on your pay
The ECB says its euro reference rates are for information, not trading. Here is what that means if you convert pay or side income from another currency.
Quarterly estimated taxes on side income: dates & rules
Who must pay estimated tax on side income, the 2026 due dates, the safe-harbor rules that prevent a penalty, and how a W-4 change can replace them.
Side income and taxes: how much to set aside
On $6,000 of side income, U.S. self-employment tax alone is about $848. How the tax works, a worked example, and the quarterly dates to know.
W-2 vs. 1099: what the same pay rate is really worth
A 1099 contractor and a W-2 employee on the same hourly rate don't keep the same pay. How payroll tax, time off and benefits change it, worked out.
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