Business finance terms, explained simply.

Estimated tax payments are taxes paid directly to the IRS throughout the year on income that does not have taxes automatically withheld from it. For most W-2 employees, an employer handles this automatically, pulling taxes from each paycheck. Freelancers, self-employed business owners, and anyone earning income outside a regular paycheck do not have that safety net, so the IRS expects them to pay estimated taxes on their own, four times a year.

Skipping this is not really optional if a business or individual owes enough tax. The IRS charges penalties for underpayment, even if the person ends up getting a refund when they eventually file their annual return.

Who Actually Needs to Pay Estimated Taxes

A few groups typically fall into this category.

Self-employed individuals and freelancers. Independent contractors and side-gig workers who expect to owe $1,000 or more in taxes for the year are the most common group required to pay estimated taxes, since no tax gets withheld from their income automatically.

Businesses. Corporations may need to make estimated payments if they expect to owe $500 or more for the tax year.

Landlords and investors. Rental income, dividends, and realized capital gains often are not covered by regular paycheck withholding, which can catch people off guard even if they also hold a regular job.

W-2 employees with insufficient withholding. Even someone with a regular paycheck may need to pay estimated taxes if their withholding will not cover at least 90% of this year’s tax liability, or 100% of last year’s, whichever is smaller. That threshold rises to 110% for higher earners, specifically those with prior-year adjusted gross income above $150,000, or $75,000 if married filing separately.

When Are Estimated Tax Payments Due

Estimated tax payments follow a quarterly schedule set by the IRS, though the periods do not line up neatly with calendar quarters.

For income earned in 2026, the following schedule applies:

Missing one of these deadlines, even by a few days, can trigger an underpayment penalty for that quarter, so marking these dates on a calendar in advance is worth the effort.

How to Calculate Estimated Tax Payments

There are two common approaches, and which one fits better depends on how predictable income is throughout the year.

The Prior-Year Method

This approach estimates the full year’s tax liability, then divides it into four equal payments. For example, someone expecting to owe $12,000 for the year would send $3,000 each quarter. This method works well for people with fairly consistent income, since it avoids recalculating every quarter.

The Annualized Method

This approach estimates tax liability quarter by quarter, based on actual income and deductions earned so far that year. It generally suits people with irregular or seasonal income better, since payments scale with what has actually been earned rather than assuming a flat, even income pattern across the year. The IRS provides worksheets to help with this calculation, and it typically requires more frequent recalculation than the prior-year method.

Both approaches use IRS Form 1040-ES to report income estimates and calculate the resulting tax liability. If income ends up higher or lower than expected partway through the year, a new Form 1040-ES can be filed to adjust future quarterly payments.

How to Pay Estimated Taxes

The IRS offers several ways to submit these payments, and electronic methods are strongly preferred for speed and confirmation of receipt.

• Through an online IRS account
• IRS Direct Pay
• The Electronic Federal Tax Payment System (EFTPS)
• By debit or credit card, though additional processing fees apply
• By mail, using Form 1040-ES with a payment voucher

Many states also require separate estimated tax payments, with their own deadlines and rules that can differ from the federal schedule, so checking a state’s tax department website is worth doing alongside the federal calculation.

What Happens If a Payment Is Missed

The IRS charges an underpayment penalty for insufficient or late estimated tax payments, calculated based on how much was underpaid and for how long. This penalty can apply even to someone who ends up owed a refund overall, since it is based on the timing of payments throughout the year, not just the final annual total.

Certain circumstances can qualify for penalty relief, such as being the victim of a casualty or natural disaster, or being at least 62, retired, or disabled within the current or prior tax year, provided the underpayment resulted from reasonable cause rather than willful neglect.

Practical Tips for Managing Estimated Tax Payments

• Set aside a percentage of each payment received. Many self-employed workers set aside 25–30% of income as it comes in, specifically for estimated tax payments, rather than scrambling to find the full amount right before a deadline.
• Consider smaller, more frequent payments. While the IRS sets a quarterly minimum schedule, nothing prevents sending smaller payments more often, monthly for example, which some people find easier to manage than four larger lump sums.
• Revisit a spouse’s W-4 if married. If one spouse has taxes automatically withheld from a regular paycheck, adjusting their withholding can sometimes cover both spouses’ combined tax liability, reducing or eliminating the need for separate estimated payments.
• Recalculate after major income changes. A large new contract, an asset sale, or a significant swing in business income should trigger a fresh look at whether the current estimated payment amount still makes sense.