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📌 For freelancers, contractors, and self-employed. Calculates FICA equivalent self-employment tax and income tax.
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Schedule C net profit (total business receipts minus expenses)
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Enter total estimated tax payments sent to the IRS so far this year
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Optional - enables the 110%-of-last-year safe-harbor target
🌎 COMPARE INCOME TAX ACROSS STATES

Compare your income taxes and take-home pay with zero-income-tax states or neighboring regions:

📖 Detailed USA Tax Guide & Calculation Rules

1. Estimated Taxes: A Guide for the Self-Employed Unlike W-2 employees who have taxes withheld from each paycheck, self-employed individuals, freelancers, and S-corporation shareholders must calculate and submit estimated tax...

1. Estimated Taxes: A Guide for the Self-Employed

Unlike W-2 employees who have taxes withheld from each paycheck, self-employed individuals, freelancers, and S-corporation shareholders must calculate and submit estimated tax payments to the IRS four times a year. Our estimated tax calculator helps you estimate your quarterly liabilities.

2. The Self-Employment Tax Liability

Self-employed workers must pay a 15.3% self-employment tax (Schedule SE) on 92.35% of their net business profits. This tax covers Social Security (12.4%) and Medicare (2.9%) obligations that are typically split between employees and employers in a standard job.

3. Calculating Your Quarterly Payments

To calculate quarterly payments, you must estimate your annual net business profit, subtract self-employment tax deductions, apply standard federal deductions, and compute your progressive income tax. The total estimated tax is then divided into four equal payments due in April, June, September, and January.

4. Avoiding IRS Underpayment Penalties

To avoid underpayment penalties, you must pay at least 90% of your current year’s tax liability or 100% of your prior year’s tax (110% if your AGI was over $150,000) through quarterly estimated payments or withholding from a W-2 job.

❓ FAQ About Estimated Tax Calculator

Who is required to pay quarterly estimated taxes?

Sole proprietors, partners, and S-corporation shareholders who expect to owe $1,000 or more when filing their return must pay estimated taxes.

What are the deadlines for quarterly estimated taxes?

Payments are due on April 15, June 15, September 15, and January 15 of the following year.

What is the estimated tax Safe Harbor rule?

You can avoid underpayment penalties if you pay 90% of this year's tax liability or 100% of last year's liability (110% if your AGI was over $150,000).

What form is used to calculate estimated taxes?

Form 1040-ES (Estimated Tax for Individuals) is used to estimate income and calculate quarterly payments.

How do I pay estimated taxes?

You can pay online via IRS Direct Pay, the Electronic Federal Tax Payment System (EFTPS), or by mailing payment vouchers with a check.

What happens if I miss a quarterly tax deadline?

The IRS charges an underpayment penalty calculated based on the underpaid amount and the number of days it remained late.

Do I have to pay estimated taxes if I also have a W-2 job?

You can avoid estimated payments by adjusting your W-2 withholding (Form W-4) to deduct extra tax from your regular paycheck to cover your self-employment income.

How do I estimate income if my earnings fluctuate?

You can use the Annualized Income Installment Method on Form 2210 to adjust payments each quarter based on actual seasonal profits.

Does estimated tax include state taxes?

Form 1040-ES is only for federal taxes. Most states have their own estimated tax forms and quarterly schedules.

Are estimated tax payments required in your first year of self-employment?

If you had no tax liability in the prior year, you are exempt from penalties, but you must plan for a potentially large tax bill in April.