Learn quarterly taxes
Plain-English guides to estimated taxes. No tax-form vocabulary required.
Self-Employed Quarterly Taxes
New to 1099 income? Whether you owe quarterly payments, how much, and how to make your first one.
Safe Harbor vs. Annualized Income
The two IRS methods for quarterly estimated taxes, how each one works, and how to pick the right one for your income.
Estimated Tax Due Dates
All four IRS deadlines, the months each payment covers, and what happens if you miss one.
The Underpayment Penalty
What triggers it, how the IRS calculates it, and the three ways to never pay it.
How Much to Set Aside for Taxes
The 25 to 30% rule, where it comes from, when it is wrong, and how to find your exact number.
Side Hustle Quarterly Taxes
The $1,000 test next to a W-2 job, and the withholding trick that can skip quarterly payments entirely.
State Estimated Taxes
Most income-tax states want their own quarterly payments, with different thresholds and schedules.