Quarterly Tax Payment Guide for 2026: Due Dates, Safe Harbors and Penalties

A quarterly tax payment is an estimated payment you send the IRS during the year on income that has no tax withheld. For the 2026 tax year, individuals pay on April 15, June 15 and September 15, 2026, and January 15, 2027. Calendar-year corporations pay on April 15, June 15, September 15 and December 15, 2026. You generally owe these payments if you expect to owe $1,000 or more when you file (individuals) or $500 or more (corporations).

Freelancers, sole proprietors, partners, S corporation shareholders, landlords and investors make up most of the people who owe a quarterly tax payment. As of late October 2026, the next individual deadline is January 15, 2027, and calendar-year corporations still have a December 15, 2026 installment ahead of them.

Who Has to Make a Quarterly Tax Payment

The IRS states that individuals, "including sole proprietors, partners, and S corporation shareholders, generally have to make estimated tax payments if they expect to owe tax of $1,000 or more" when the return is filed. The same page sets the corporate trigger at $500.

The full individual test in Publication 505 has two parts. You must pay estimated tax for 2026 if you expect to owe at least $1,000 after withholding and credits, and you expect withholding and credits to cover less than the smaller of 90% of your 2026 tax or 100% of the tax shown on your 2025 return. The 2025 return must cover a full 12 months.

There is one clean exemption. You owe no estimated tax for 2026 if you had no tax liability for 2025, were a U.S. citizen or resident for the whole year, and your 2025 tax year covered 12 months.

Estimated payments also cover self-employment tax and alternative minimum tax. Contractors who are unsure how much of each invoice to hold back can start with our guide to setting aside taxes on 1099 income, then convert that reserve into the four payments below.

If you also have a W-2 job, you can raise your paycheck withholding instead of paying quarterly. The Form 2210 instructions let you treat income tax withholding as withheld evenly throughout the year, so extra withholding in November can cover a shortfall from June.

2026 Quarterly Tax Payment Due Dates

The periods are uneven: the second covers two months and the fourth covers four.

If a due date falls on a weekend or legal holiday, the payment is on time when made on the next business day. The IRS also notes that for a mailed payment, "the date of the U.S. postmark is the date of payment".

Two exceptions change the January date. If you file your 2026 Form 1040 early and pay the full balance with it, you can skip the January 15, 2027 payment. Publication 505 states this cutoff as January 31, 2027, which is a Sunday, and the 2026 Form 1040-ES instructions give it as February 1, 2027. Farmers and fishermen who earn at least two-thirds of gross income from that work have a single payment date of January 15, 2027, or none at all if they file and pay in full by March 1, 2027.

Our small business tax compliance calendar lists the other federal deadlines that land in the same months, including the Form 941 quarterly payroll return for businesses with employees.

Safe Harbor Rules for Individuals

The penalty applies only when your payments fall short of the required annual payment. You meet that requirement by paying, through timely installments and withholding, the smaller of these two amounts:

• 90% of the tax on your 2026 return
• 100% of the tax on your 2025 return

Higher earners use a larger prior-year figure. If your 2025 adjusted gross income was more than $150,000 ($75,000 if married filing separately for 2026), Publication 505 tells you to substitute 110% for 100%. Farmers and fishermen substitute 66 2/3% for the 90% test.

The prior-year safe harbor is easier to hit because the number is fixed in January. If income jumps, you owe the extra tax at filing with no underpayment penalty. The current-year test suits a year when income drops.

The annualized income installment method

The regular method assumes income arrives evenly. Seasonal businesses and freelancers who land one large contract in the fall can use the annualized income installment method, which Publication 505 says "annualizes your tax at the end of each period based on a reasonable estimate of your income, deductions, and other items" for events through the end of that period. You claim it on Schedule AI of Form 2210 when you file. A cash flow forecast built for the business makes it easier to see which periods will carry the heavy payments.

How to Calculate Your Quarterly Tax Payment

Form 1040-ES and Worksheet 2-1 in Publication 505 follow the shape of a tax return.

1. Estimate 2026 net profit from your business, plus other income such as interest, dividends, rents and capital gains.
2. Figure self-employment tax. The rate is 15.3%, made up of 12.4% for Social Security and 2.9% for Medicare, applied to 92.35% of net profit. The Social Security part stops at $184,500 of combined wages and self-employment earnings in 2026.
3. Subtract half of the self-employment tax to reach adjusted gross income.
4. Subtract the standard deduction or itemized deductions, then the qualified business income deduction.
5. Apply the 2026 tax rates, subtract credits, and add self-employment tax.
6. Compare the result with your safe harbor and pay the required annual amount in four installments.

Tracked expenses lower every figure in that chain. Our list of tax deductions for 1099 contractors covers what freelancers most often miss.

What the One Big Beautiful Bill Act changed for 2026 estimates

The One Big Beautiful Bill Act, enacted on July 4, 2025, changes several worksheet inputs. The IRS 2026 inflation release sets the 2026 standard deduction at $16,100 for single filers, $32,200 for married couples filing jointly and $24,150 for heads of household. Publication 505 adds that the qualified business income deduction is now permanent, with a minimum deduction of $400 for taxpayers with at least $1,000 of qualified business income from an active trade or business. Non-itemizers can add up to $1,000 ($2,000 for joint filers) of cash charitable gifts on the worksheet. Our Section 199A deduction guide explains the limits that apply at higher incomes.

Worked Example: A Freelancer's 2026 Quarterly Tax Payment

This example is illustrative. Priya is a single freelance designer with no other income. She expects $96,000 of net Schedule C profit in 2026. Her 2025 return showed total tax of $17,500 and adjusted gross income of $85,000, so the 100% prior-year rule applies to her.

Her two safe harbor options are 90% of $21,145.10, which is $19,030.59, or 100% of last year's $17,500. The smaller figure is $17,500, so each quarterly tax payment is $4,375. She pays that amount on April 15, June 15 and September 15, 2026, and January 15, 2027. When she files in April 2027, she owes the remaining $3,645.10 with no underpayment penalty. If she preferred to avoid a balance due, she could pay $5,286.28 a quarter, one-fourth of her projected tax.

Now suppose she skipped the September 15 payment and sent it on December 15, 2026. That payment is 91 days late. At the 7% underpayment rate, the penalty on that installment is about $4,375 x 7% x 91 / 365, or roughly $76.

Estimated Tax Payment Penalties and the 2026 Rate

The underpayment penalty works like interest. It runs from each installment's due date until you pay, at the federal short-term rate plus three percentage points. The IRS announced that for the quarter beginning October 1, 2026, the rate for individual underpayments stays at 7% per year, and large corporate underpayments are charged 9%.

Three rules catch people out. The penalty is figured separately for each payment period, so a large January payment does not erase a shortfall from June. The IRS says you can be charged a penalty "even if you are due a refund when you file your income tax return". The IRS generally figures the penalty and sends a bill, so most people leave the penalty line blank and skip Form 2210. You must file the form in some situations, such as requesting a waiver or using the annualized method.

Waivers exist but are narrow. Under the Form 2210 instructions, the IRS can waive the penalty if you retired after reaching age 62 or became disabled and the underpayment was due to reasonable cause, or if the underpayment came from a casualty, disaster or other unusual circumstance. If a penalty has already been assessed, our guide to requesting penalty abatement on Form 843 covers the next step. If you can't pay the full balance at filing, an installment agreement on Form 9465 can spread the bill out, though the IRS notes that penalties and interest continue to accrue until the balance is paid in full.

How Corporations Handle Quarterly Estimated Tax

C corporations follow a separate set of rules in Publication 542. Installments are due on the 15th day of the 4th, 6th, 9th and 12th months of the tax year, which is April 15, June 15, September 15 and December 15 for a calendar-year company. For a June 30 year end, the dates are October 15, December 15, March 15 and June 15.

Each installment is 25% of either the current-year tax or the prior-year tax. The prior-year method is available only if the corporation filed a full 12-month return showing a positive tax. A large corporation, defined as one with taxable income of $1 million or more in any of the 3 preceding tax years, may use the prior-year method for its first installment only.

Form 1120-W was the old corporate estimated tax worksheet. Publication 542 now states that Form 1120-W and its instructions "are now historical", and its 2022 revision was the last one. Corporations now figure installments with the worksheet in Publication 542 and use Form 2220 to figure any underpayment penalty. Publication 542 also says a corporation "is generally required to use EFTPS to pay its taxes". The annual return follows the Form 1120 due date rules, and any balance left after the four installments is due by that date.

S corporations and partnerships generally pass income through to owners, who make their own quarterly payments. S corporation owners can cover part of their tax through withholding on the reasonable salary every S corp owner must pay, which reduces the quarterly amount. Where a state offers an elective pass-through entity tax, the entity's own state payments change the owners' math, as our explainer on how the pass-through entity tax works shows.

How to Pay Estimated Taxes

Publication 505 lists IRS Direct Pay (free bank transfers), card payments through processors that charge a fee, EFTPS, the IRS2Go app and your IRS online account. The IRS estimated taxes page adds that you can pay weekly, biweekly or monthly, as long as enough is paid by each due date.

Businesses can now make most estimated payments through their business tax account or Direct Pay for businesses. Checks still work with a Form 1040-ES voucher. Save every payment confirmation for your preparer.

Habits That Keep Freelancers and Owners on Track

Move a fixed share of each client payment into a separate tax savings account as it arrives, then replace that rough share with a real estimate before each due date. Keep a running worksheet of income, expenses, payments made and cash set aside, and update it monthly. It also shows your preparer what you paid and why.

Revisit the estimate after a big contract, a slow quarter, a new W-2 job or a missed payment, and pay any shortfall in the next installment. Most states with an income tax run their own estimated payment schedules, so check your state's rules separately.

Frequently Asked Questions

What is a quarterly tax payment? It is an estimated payment toward your annual federal tax, made during the year on income without withholding. Individuals generally owe them when they expect to owe $1,000 or more at filing, and corporations at $500 or more.

What are the 2026 quarterly tax payment due dates? For individuals, April 15, June 15 and September 15, 2026, and January 15, 2027. Calendar-year corporations pay on April 15, June 15, September 15 and December 15, 2026.

How much should each quarterly payment be? Pay one-fourth of the smaller of 90% of your expected 2026 tax or 100% of your 2025 tax. Use 110% of 2025 tax if your 2025 adjusted gross income was over $150,000, or over $75,000 if married filing separately.

What is the penalty for a late or missed estimated payment? The penalty runs on each unpaid installment from its due date until paid. The rate for individuals is 7% for the quarter beginning October 1, 2026, and it is figured separately for each installment.

Do I need to make a payment if I lost money last year? If your 2025 return showed no tax liability, covered 12 months, and you were a U.S. citizen or resident all year, you owe no estimated tax for 2026. You still owe the full 2026 tax when you file.

Is Form 1120-W still used for corporate estimated tax? No. The IRS lists Form 1120-W as historical, with 2022 as its last revision. Corporations figure installments with the Publication 542 worksheet and use Form 2220 to figure any underpayment penalty.

Next Step

Madras Accountancy supports business owners and CPA firms with bookkeeping, tax preparation and tax planning, including quarterly estimate projections and year-end reconciliation of payments made. To set up a review before the next deadline, contact our team.