Tax

What is Quarterly Estimated Tax?

Advance tax payments made four times a year by self-employed individuals to cover income tax and self-employment tax obligations.

Definition

Quarterly estimated tax is a pay-as-you-go tax system for self-employed individuals, freelancers, independent contractors, and sole proprietors who do not have taxes withheld from their income by an employer. The IRS requires these taxpayers to make four estimated tax payments throughout the year — on April 15, June 15, September 15, and January 15 — to cover both their income tax and self-employment tax (Social Security and Medicare taxes).

Who Must Pay Estimated Taxes

You generally must pay quarterly estimated taxes if you expect to owe at least $1,000 in federal taxes for the year and you do not have sufficient withholding from other sources. This applies to freelancers, independent contractors, sole proprietors, partners in partnerships, and S-corporation shareholders who take distributions. Even if you have a regular W-2 job, if you have significant self-employment income, you may need to make estimated tax payments.

Self-Employment Tax Calculation

Self-employment tax consists of Social Security tax (12.4% on net earnings up to the wage base limit) and Medicare tax (2.9% on all net earnings), totaling 15.3%. As a self-employed person, you pay both the employer and employee portions. However, you can deduct half of your self-employment tax when calculating your adjusted gross income, which reduces your overall tax burden. Net self-employment earnings are your gross income minus business expenses.

How to Pay

You can pay quarterly estimated taxes through the IRS Direct Pay website (free and immediate), the Electronic Federal Tax Payment System (EFTPS) which requires enrollment, by credit or debit card through a payment processor (fees apply), or by mailing a check with Form 1040-ES payment vouchers to the IRS. Many state tax agencies have similar online payment systems for state estimated taxes. Set up reminders or automatic payments to avoid missing deadlines.

Avoiding Underpayment Penalties

The IRS charges underpayment penalties if you do not pay enough tax throughout the year. To avoid penalties, use one of these safe harbor methods: pay 100% of last year's total tax liability (or 110% if your AGI was over $150,000), or pay 90% of this year's estimated tax liability. Setting aside 25–30% of every payment you receive as a freelancer is a practical rule of thumb to ensure you have enough to pay your taxes when due.

Continue Learning

Browse Invoice Templates Try Eonebill Free

Frequently Asked Questions

What are quarterly estimated taxes?

Quarterly estimated taxes are advance payments of income tax and self-employment tax that self-employed individuals, freelancers, and sole proprietors must pay to the IRS four times a year. Because no employer withholds taxes from their income, they must pay estimated taxes on a schedule to avoid underpayment penalties.

When are the quarterly estimated tax deadlines?

The four quarterly estimated tax due dates are: Q1 — April 15 (for income from January 1 to March 31); Q2 — June 15 (for income from April 1 to May 31); Q3 — September 15 (for income from June 1 to August 31); Q4 — January 15 of the following year (for income from September 1 to December 31). If a deadline falls on a weekend or holiday, it moves to the next business day.

How is the quarterly estimated tax amount calculated?

The simplest method is to calculate 100% of last year's tax liability (110% if your AGI exceeded $150,000) and divide by four. Alternatively, estimate your current year's income and calculate the tax owed (income tax plus 15.3% self-employment tax on net earnings), then divide by four. Most freelancers use the prior year's safe harbor method to avoid penalties while ensuring they cover their actual tax liability.