Quarterly Tax Calculator

The IRS requires quarterly estimated tax payments for self-employed individuals and others without employer withholding. This calculator determines how much you owe each quarter based on your income, and tracks prior payments to calculate the correct amount due now.

Financial

Currency

Quarterly Gross Income

Filing Status

Annual Tax Credits

Prior Quarters Already Paid

Formula

Quarterly estimated tax payments are due April 15, June 15, September 15, and January 15. If you are self-employed, a freelancer, or have other non-wage income, you must make these payments to avoid underpayment penalties. This calculator determines the correct amount per quarter and adjusts for payments already made.

Annual = Quarterly x 4; Quarterly tax = Annual / 4; Due = Annual - Prior paid, divided by remaining quarters

Percentage: The percentage value you want to apply

Number: The original number or value

Result: The calculated result

How It Works

1Enter your quarterly gross income.
2Select your filing status and enter any annual tax credits.
3Enter how much you have already paid in prior quarters.
4The calculator annualizes your income, computes total liability, and divides by the remaining quarters.
5You see exactly how much you need to pay this quarter.

Examples

$25K/quarter, single, no prior payments

1.Annual income: $100,000
2.Taxable: $85,400
3.Annual tax: $14,194
4.Quarterly: $3,549
5.Due now: $3,549

Result: $3,549 due this quarter

$30K/quarter, married, $6K already paid

1.Annual: $120,000
2.Taxable: $90,800
3.Annual tax: $12,626
4.Quarterly: $3,157
5.Already paid: $6,000
6.Remaining: $6,626 across 3 quarters

Result: $2,209 due this quarter

Frequently Asked Questions

Due dates are: Q1 (Jan-Mar) due April 15, Q2 (Apr-May) due June 15, Q3 (Jun-Aug) due September 15, Q4 (Sep-Dec) due January 15 of the following year.

The IRS charges an underpayment penalty if you owe more than $1,000 in tax and did not pay at least 90% of the current year's tax or 100% of the prior year's tax through withholdings or estimates.

Self-employed individuals, freelancers, gig workers, investors with capital gains, rental property owners, and anyone with income not subject to employer withholding must make quarterly estimated payments.

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Quarterly Tax Payment Guide

CalculateMe Team

Last updated: 2026-07-17

How It Works

1Enter your quarterly gross income.

2Select your filing status and enter any annual tax credits.

3Enter how much you have already paid in prior quarters.

4The calculator annualizes your income, computes total liability, and divides by the remaining quarters.

5You see exactly how much you need to pay this quarter.

Examples

$25K/quarter, single, no prior payments

1.Annual income: $100,000
2.Taxable: $85,400
3.Annual tax: $14,194
4.Quarterly: $3,549
5.Due now: $3,549

Result: $3,549 due this quarter

$30K/quarter, married, $6K already paid

1.Annual: $120,000
2.Taxable: $90,800
3.Annual tax: $12,626
4.Quarterly: $3,157
5.Already paid: $6,000
6.Remaining: $6,626 across 3 quarters

Result: $2,209 due this quarter

Frequently Asked Questions

Due dates are: Q1 (Jan-Mar) due April 15, Q2 (Apr-May) due June 15, Q3 (Jun-Aug) due September 15, Q4 (Sep-Dec) due January 15 of the following year.

The IRS charges an underpayment penalty if you owe more than $1,000 in tax and did not pay at least 90% of the current year's tax or 100% of the prior year's tax through withholdings or estimates.

Quarterly Tax Calculator

Formula

How It Works

Examples

$25K/quarter, single, no prior payments

$30K/quarter, married, $6K already paid

Frequently Asked Questions

When are quarterly estimated taxes due?

What happens if I underpay quarterly estimates?

Who must pay quarterly estimated taxes?

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Quarterly Tax Calculator

Formula

How It Works

Examples

$25K/quarter, single, no prior payments

$30K/quarter, married, $6K already paid

Frequently Asked Questions

When are quarterly estimated taxes due?

What happens if I underpay quarterly estimates?

Who must pay quarterly estimated taxes?

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