Do S corps pay quarterly taxes? Usually not at the company level for income tax — an S corporation’s profits pass through to its shareholders, who owe quarterly estimated taxes personally if they’ll owe $1,000 or more for the year.1Internal Revenue Service. Estimated Taxes The company itself does have quarterly obligations in two situations most owners don’t think about: payroll taxes if it has employees, and entity-level estimated income tax in a few narrow cases tied to a prior C corporation history.
Why the Company Usually Doesn’t Owe Quarterly Income Tax
When a corporation elects S status under Section 1362, it stops being taxed as a separate entity for federal income tax.2Office of the Law Revision Counsel. 26 USC 1362 – Election; Revocation; Termination Income, losses, deductions, and credits flow through to the shareholders. The S corp files Form 1120-S once a year to report activity, but that return is informational and doesn’t come with a tax bill of its own.3Internal Revenue Service. About Form 1120-S, U.S. Income Tax Return for an S Corporation
Each shareholder receives a Schedule K-1 showing their share of the year’s income and deductions.4Internal Revenue Service. 2025 Shareholder’s Instructions for Schedule K-1 (Form 1120-S) You owe tax on that share whether or not the company distributes cash to cover it. Because the tax burden sits with individuals, the IRS looks to individuals for the quarterly payments.
Shareholder Quarterly Estimated Payments
If you’re a shareholder and expect to owe $1,000 or more after subtracting withholding and credits, the IRS wants estimated payments spread across the year.1Internal Revenue Service. Estimated Taxes Most owner-shareholders take both a salary and distributions, and the salary withholding by itself rarely covers tax on the pass-through income. Quarterly payments fill the gap.
Individuals calculate their payments using Form 1040-ES, which walks through projecting your total liability.5Internal Revenue Service. 2026 Form 1040-ES Estimated Tax for Individuals For calendar-year taxpayers in 2026, the four dates are:
- April 15, 2026, for income from January through March
- June 15, 2026, for April and May
- September 15, 2026, for June through August
- January 15, 2027, for September through December
None fall on a weekend or federal holiday this cycle. When a deadline does land on a Saturday, Sunday, or D.C. legal holiday, it shifts to the next business day.6Internal Revenue Service. Publication 509 (2026), Tax Calendars
Safe Harbors That Avoid a Penalty
You won’t owe an underpayment penalty if any of these three conditions is met:
- Your total tax after withholding and credits comes in under $1,000.
- You paid at least 90% of what you actually owe for the current year through a mix of withholding and estimated payments.
- You paid at least 100% of the total tax shown on your prior year’s return.
One catch on the prior-year rule: if your adjusted gross income exceeded $150,000 in the prior year ($75,000 if married filing separately), the threshold jumps to 110%.7Internal Revenue Service. Underpayment of Estimated Tax by Individuals Penalty Owners who had a strong year followed by a stronger one get tripped up here often.
Don’t Forget the Net Investment Income Tax
Higher-income shareholders may also owe the 3.8% Net Investment Income Tax on certain pass-through income. It kicks in when modified adjusted gross income exceeds $200,000 (single), $250,000 (married filing jointly), or $125,000 (married filing separately).8Internal Revenue Service. Topic No. 559, Net Investment Income Tax Passive shareholders who don’t materially participate in the business can see S corp income pull them into it, and the tax belongs in your quarterly estimate.
When the S Corporation Itself Owes Quarterly Tax
A few situations put the tax on the company rather than the shareholders. When one of these applies and the corporation expects to owe $500 or more, it must make its own quarterly estimated payments.1Internal Revenue Service. Estimated Taxes
Built-in gains tax. A corporation that converted from C to S status carries a potential tax on assets that appreciated during the C years. Selling those assets within five years of the conversion triggers a corporate-level tax at the flat 21% rate on the built-in gain.9Office of the Law Revision Counsel. 26 USC 1374 – Tax Imposed on Certain Built-In Gains Companies that have always been S corporations don’t face it.
Excess net passive income tax. An S corp with accumulated earnings carried over from C corp days that earns passive investment income exceeding 25% of gross receipts owes a corporate-level tax on the excess.10Office of the Law Revision Counsel. 26 USC 1375 – Tax Imposed When Passive Investment Income of Corporation Having Accumulated Earnings and Profits Exceeds 25 Percent of Gross Receipts Both conditions must be present. If your S corp was never a C corp or you’ve distributed all the old earnings, it doesn’t apply.
LIFO recapture tax. Companies that used LIFO inventory during their C corp years owe a recapture tax on conversion, capturing the difference between LIFO and FIFO inventory values. It’s paid in four equal annual installments starting with the final C corp return.11Internal Revenue Service. Instructions for Form 1120-S (2025)
Quarterly Payroll Taxes: The Obligation Nearly Every S Corp Has
If you work in the business, the IRS requires the company to pay you a reasonable salary before you take distributions.12Internal Revenue Service. S Corporation Compensation and Medical Insurance Issues That salary is subject to Social Security and Medicare taxes — 6.2% and 1.45% withheld from the employee’s pay, with a matching amount paid by the company. Distributions above the salary aren’t subject to these employment taxes.
Every S corp paying wages files Form 941 each quarter, reporting income tax withholding and FICA. Deadlines fall on the last day of the month after the quarter ends:13Internal Revenue Service. Instructions for Form 941
- Q1 (January through March): April 30
- Q2 (April through June): July 31
- Q3 (July through September): October 31
- Q4 (October through December): January 31
If you made all required tax deposits on time for the quarter, you get an extra 10 days to file the return itself. Payroll deposits themselves generally happen monthly or semi-weekly, on a schedule the IRS assigns. Falling behind on deposits is one of the fastest ways to accumulate penalties.
How to Make the Payments
The IRS accepts estimated payments through several channels. Two work for most S corp situations:
- EFTPS, the Electronic Federal Tax Payment System, is free and designed for businesses. Payments must be scheduled by 8 p.m. Eastern the day before the due date to count as timely. S corporations making corporate-level estimated payments must use EFTPS.14Electronic Federal Tax Payment System. Welcome to EFTPS
- IRS Direct Pay is free, needs no account, and pulls from a bank account. It’s a good fit for individual shareholders making personal estimated payments.15Internal Revenue Service. Direct Pay With Bank Account
Paper checks with the 1040-ES voucher still work for individual payments; the mailing address depends on your state and appears in the form instructions.16Internal Revenue Service. About Form 1040-ES, Estimated Tax for Individuals Keep the confirmation number or canceled check. For corporate-level estimated taxes, the IRS retired Form 1120-W as a regularly updated form after 2022; corporations can still use the 2022 worksheet to compute quarterly amounts and pay through EFTPS.17Internal Revenue Service. 2022 Instructions for Form 1120-W
What Missing a Payment Costs
Shareholders who underpay estimated taxes owe interest on the shortfall from each missed due date until the payment is made. The underpayment rate for the first quarter of 2026 is 7% per year, compounded daily.18Internal Revenue Service. Interest Rates Remain the Same for the First Quarter of 2026 It dropped to 6% for the second quarter beginning April 1, 2026.19Internal Revenue Service. Internal Revenue Bulletin 2026-08 The rate adjusts quarterly and can move again later in the year. The IRS labels this an addition to tax rather than a penalty, but the practical effect is the same.
Late payroll deposits and late Form 941 filings carry separate penalty schedules, and reasonable-compensation problems create their own exposure: the IRS can reclassify distributions as wages and assess back payroll taxes, penalties, and interest.12Internal Revenue Service. S Corporation Compensation and Medical Insurance Issues
State Rules Don’t Always Match
Federal pass-through treatment doesn’t mean your state follows the same approach. More than 30 states as of 2026 have adopted pass-through entity taxes that allow or require the S corp to pay state income tax at the entity level, created largely as a workaround for the $10,000 federal cap on state and local tax deductions. Several states also impose minimum franchise taxes or flat annual fees on S corporations regardless of income, and state quarterly schedules don’t always line up with federal dates. Check your state’s tax authority for the specific requirements that apply to your company.