You’re required to pay federal estimated taxes if you expect to owe at least $1,000 in tax for the year after subtracting withholding and refundable credits, and your withholding and credits won’t cover the smaller of 90% of this year’s tax or 100% of last year’s tax (110% if your prior-year AGI topped $150,000, or $75,000 if you file married filing separately).1Internal Revenue Service. Estimated Tax Corporations face a lower trigger: $500 or more in expected tax.2Internal Revenue Service. Estimated Taxes The federal system runs on pay-as-you-go, so income that arrives without withholding has to be covered another way.
The Two-Part Test for Individuals
Both of these conditions must be true before the IRS treats you as obligated to make quarterly payments:1Internal Revenue Service. Estimated Tax
- You expect to owe at least $1,000 in tax for the year after subtracting all withholding and refundable credits.
- Your withholding and refundable credits will be less than the smaller of 90% of the tax on your current year’s return, or 100% of the tax shown on last year’s return (110% if your prior-year AGI exceeded $150,000, or $75,000 if married filing separately).
The second prong is where people get tripped up. If your employer withholds enough to cover 90% of what you’ll owe this year, you’re clear even if the remaining balance is more than $1,000. Both conditions have to apply at once. The worksheet in Form 1040-ES walks you through expected income, deductions, self-employment tax, and credits to arrive at a projected liability.3Internal Revenue Service. 2026 Form 1040-ES Estimated Tax for Individuals
The Corporate Threshold
Any corporation expecting to owe $500 or more in tax when its return is filed generally has to make estimated payments.2Internal Revenue Service. Estimated Taxes If the corporation’s total tax comes in under that amount, the IRS won’t impose an underpayment penalty.4Internal Revenue Service. 2025 Instructions for Form 2220 – Underpayment of Estimated Tax by Corporations Corporations that use the annualized income installment method or the adjusted seasonal installment method must attach Form 2220 to the return even when no penalty is owed.
Income That Pushes People Over the Line
The common thread across situations that trigger estimated payments is income that arrives with no tax withheld. A few categories account for most cases.
Self-Employment and Gig Work
Freelancers, independent contractors, and gig workers receive their full pay with nothing taken out. They owe income tax plus self-employment tax for Social Security and Medicare, which runs 15.3% on most net earnings (12.4% for Social Security plus 2.9% for Medicare).5Internal Revenue Service. Topic No. 554, Self-Employment Tax That combination pushes most self-employed people well past the $1,000 threshold.
Investment Income
Interest, dividends, and capital gains all come in without withholding. A single profitable stock sale or a strong dividend year can push your bill past the threshold even when a W-2 job covers most of your regular income.
Rental Income
Rent arrives with no tax withheld. After deductible expenses like mortgage interest and repairs, net rental income adds to your total liability and may require estimated payments to close the gap.
Digital Assets
The IRS treats cryptocurrency and other digital assets as property. Selling, exchanging, or otherwise disposing of them triggers capital gains or losses, taxed at short-term rates if you held the asset for one year or less and long-term rates if you held it longer.6Internal Revenue Service. Digital Assets Income from mining, staking, and crypto received as payment for services counts as ordinary income. None of it carries automatic withholding.
Gambling and Prize Winnings
Casinos and other payers don’t always withhold from winnings. Slot payouts of $1,200 or more, keno winnings of $1,500 or more, and many other gambling proceeds generate a Form W-2G but frequently have no federal tax taken out at the time of payment.7Internal Revenue Service. Gaming Withholding and Reporting Threshold Mandatory withholding generally kicks in only when net proceeds exceed $5,000. Below that line, the responsibility is entirely yours.
Retirement Distributions
Pension payments and IRA withdrawals are taxable, and while many payers withhold some federal tax, the default rate often falls short of your actual bracket. Drawing from several accounts or having other income sources on top can push the combined bill into estimated-payment territory.8Internal Revenue Service. Pay As You Go, So You Wont Owe
How Business Structure Decides Who Pays
The way a business is organized determines whether the entity or the individual owner is on the hook.
Sole Proprietors
Sole proprietors report business income directly on their personal return. They owe income tax and the full self-employment tax, with no employer splitting the bill. That combination almost always triggers the estimated payment requirement.
Partners and S Corporation Shareholders
Partnerships and S corporations are pass-through entities: the business itself doesn’t pay income tax, and profits and losses flow through to each owner’s individual return based on ownership share.2Internal Revenue Service. Estimated Taxes Each partner or shareholder uses that share to calculate personal estimated payments. An S corporation shareholder who also works in the business receives a salary with normal withholding, but the share of remaining business profits comes through without any tax taken out.
Household Employers
If you pay a nanny, housekeeper, or other household worker enough to trigger employment taxes, you may need to build those taxes into your own estimated payments. Social Security, Medicare, and federal unemployment taxes for domestic workers get reported on Schedule H and added to your personal liability at filing.9Internal Revenue Service. Publication 926 (2026), Household Employers Tax Guide When your other income already requires estimates, household employment taxes fold into that same calculation.
Who Is Exempt or Protected
Several rules keep people off the hook entirely, and others prevent penalties when payments end up short.
No Prior-Year Tax Liability
You don’t have to make estimated payments at all if all three of these were true for your prior tax year: you had zero tax liability, you were a U.S. citizen or resident for the full year, and your prior year covered a full 12-month period.2Internal Revenue Service. Estimated Taxes This exemption helps people who had a gap year with no income or whose deductions wiped out the entire bill.
Safe Harbor Thresholds
Even if you owe a balance when you file, you won’t face an underpayment penalty if your payments during the year hit one of these marks:10Internal Revenue Service. Underpayment of Estimated Tax by Individuals Penalty
- Current-year safe harbor: at least 90% of the tax shown on this year’s return.
- Prior-year safe harbor: at least 100% of the tax shown on last year’s return, or 110% if your prior-year AGI was above $150,000 ($75,000 if married filing separately).
You only have to meet whichever threshold produces the smaller required payment. The prior-year method is useful when your income is climbing and you want a fixed target: pay what you owed last year (or 110% of it for higher earners) and the IRS won’t penalize you regardless of what the final bill turns out to be.
Penalty Waivers for Special Circumstances
The IRS can waive the underpayment penalty entirely if the shortfall resulted from a casualty, disaster, or other unusual circumstance where imposing the penalty would be unfair.11Office of the Law Revision Counsel. 26 USC 6654 – Failure by Individual to Pay Estimated Income Tax A separate exception covers people who retired after reaching age 62 or became disabled during the tax year or the preceding year and had reasonable cause for the underpayment. You request either waiver by filing Form 2210 with your return.10Internal Revenue Service. Underpayment of Estimated Tax by Individuals Penalty
Federally Declared Disaster Areas
Taxpayers in federally declared disaster areas receive automatic deadline extensions. The IRS postpones filing and payment due dates based on FEMA damage assessments, covering anyone whose home or business is in the affected area, relief workers, and people whose tax records are located there.12Internal Revenue Service. Disaster Assistance and Emergency Relief for Individuals and Businesses
Special Rules for Farmers and Fishermen
If at least two-thirds of your gross income comes from farming or fishing in either the current or prior year, you qualify for a simplified schedule. Instead of four quarterly payments, you can make a single estimated payment by January 15, or skip estimated payments entirely by filing your return and paying all tax owed by March 1.13Internal Revenue Service. Topic No. 416, Farming and Fishing Income If you take the January 15 route, your required payment is the smaller of two-thirds of your current year’s tax or 100% of last year’s tax.10Internal Revenue Service. Underpayment of Estimated Tax by Individuals Penalty
State Rules Are Separate
Meeting the federal test doesn’t answer the state question. Most states with an income tax impose their own estimated payment requirements, with expected-tax triggers ranging as low as $100 and safe harbor percentages that can run from 60% to 90% of current-year liability. Underpayment penalties at the state level layer on top of federal ones. Check your state tax agency’s rules for the threshold, due dates, and payment methods that apply where you live.