Filing quarterly taxes requires that you use Form 1040-ES, Estimated Tax for Individuals. Your annual tax return from the previous year is necessary to complete this form.

Form 2210 calculates underpayment penalties when you haven't paid enough quarterly taxes. The penalty is essentially interest on the underpaid amount for each quarter you were short.

100% of last year’s tax liability - If your adjusted gross income (AGI) was $150,000 or less ($75,000 if married filing separately), you’re safe if you pay in at least 100% of what you owed ...

Form 941, also known as Employer’s Quarterly Federal Tax Return, is a form companies use to disclose income taxes, Social Security tax or Medicare tax withheld from the employees’ paychecks.

This form walks you through your expected income subject to self-employment taxes, current tax rate schedules, qualifying deductions and when quarterly payments are due throughout the year.

These are Social Security and Medicare taxes (also known as FICA taxes), which total 15.3% on your income up to a certain level — in 2025, you pay Social Security tax of 12.4% on up to $176,100 ...

Estimated taxes are due quarterly, usually on the 15th day of April, June, September and January of the following year. One notable exception is if the 15th falls on a legal holiday or a weekend.

For those who don't have taxes regularly taken from their paycheck, the deadline for the second payment of quarterly taxes is Thursday, June 15 ...

However, estimated tax payments covering January, February and March for individuals who pay quarterly are due on Thursday, April 15, as required by law.

Range reports high earners must pay quarterly estimated taxes if they owe over $1,000, with specific guidelines to avoid penalties.

California requires quarterly payments if you expect to owe $500 or more in state taxes. The safe harbor is 110% of the prior year’s California tax if AGI exceeded $150,000, or 100% if under ...