Estimated Tax
Estimated Tax
Estimated tax is a method of paying income tax on earnings that are not subject to automatic withholding, typically in four scheduled payments throughout the year rather than in one lump sum at tax time.
How It Works
When you receive a paycheck from an employer, federal and state income taxes are generally withheld automatically before you ever see the money. However, many types of income arrive without any withholding attached. In those cases, the IRS expects taxpayers to calculate and pay taxes on that income periodically during the year. This pay-as-you-go system is how estimated taxes function.
The IRS typically divides the estimated tax calendar into four payment periods. For most taxpayers, the due dates fall in April, June, September, and January of the following year. Missing these deadlines or underpaying can result in a penalty, even if the taxpayer ends up receiving a refund when they file their annual return.
In most cases, taxpayers can avoid underpayment penalties by meeting one of two safe harbor thresholds:
- Paying at least 90% of the current year’s total tax liability, or
- Paying 100% of the prior year’s total tax liability (110% for higher-income taxpayers)
Form 1040-ES is the standard form used to calculate and submit estimated tax payments to the IRS. Most states with income taxes have a similar system and their own corresponding forms.
Who Generally Needs to Pay Estimated Taxes
Estimated taxes are typically required for people who receive income outside of traditional employment. Common situations include:
- Freelancers and self-employed workers who receive payments without withholding
- Small business owners reporting business income on a personal return
- Investors with significant capital gains, dividends, or interest income
- Retirees receiving pension income or required minimum distributions without withholding
- Landlords earning rental income throughout the year
Practical Examples
Example 1: Freelance Graphic Designer
A freelance graphic designer earns approximately $60,000 per year from client projects. No withholding is taken from any of those payments. After accounting for the self-employment tax deduction and a standard deduction, the designer estimates a total federal tax liability of around $9,000 for the year. To meet the 90% safe harbor threshold, the designer generally needs to pay at least $8,100 in estimated taxes across the four payment periods, or roughly $2,025 per quarter.
Example 2: Part-Time Employee with Investment Income
A part-time employee has $3,000 withheld from wages during the year, but also sells stock and realizes $15,000 in capital gains. The additional tax owed on those gains comes to approximately $2,250 (at a 15% long-term capital gains rate). Because withholding from the job does not cover that additional liability, the taxpayer may need to make estimated payments during the year to avoid a penalty at filing time.
Related Tax Concepts to Explore
Understanding estimated taxes is often easier when paired with knowledge of related topics. Readers may find it helpful to look into the following:
- Self-Employment Tax: The additional 15.3% tax on net self-employment income, which is typically a major component of estimated tax calculations for freelancers and sole proprietors
- Withholding: The automatic tax collection mechanism used by employers, which estimated taxes are designed to replicate for non-wage income
- Underpayment Penalty: The IRS penalty (calculated using Form 2210) that can apply when estimated payments fall short of the required threshold
- Safe Harbor Rules: The specific percentage-based guidelines that taxpayers can follow to generally avoid underpayment penalties
- Quarterly Tax Payments: A common informal name for estimated tax payments, reflecting their four-times-per-year schedule
Estimated taxes are a fundamental part of the tax system for anyone earning income outside of standard employment, and understanding the timing and calculation of these payments can help avoid unexpected penalties when the annual return is filed.