LLC Quarterly Taxes: Due Dates, Calculator & How to Pay (2026)
LLC quarterly taxes — formally called estimated tax payments — are due four times a year because no employer withholds taxes from your LLC income. Miss them and the IRS charges underpayment penalties even if you pay your full tax bill at filing. This guide covers every 2026 due date, how to calculate exactly what you owe, how to pay for free, and the safe harbor rule that protects you from penalties no matter what.
Written & verified by Ahmad Adil, LLC School · Updated June 2026
What Are LLC Quarterly Taxes?
LLC quarterly taxes are estimated tax payments you make to the IRS four times a year to cover your self-employment tax and federal income tax on LLC profit. Because your LLC doesn't withhold taxes from owner distributions or draws the way an employer withholds from W-2 paychecks, the IRS requires you to estimate and pay as you go.
The IRS calls these "estimated tax payments" and they're calculated and submitted on Form 1040-ES. If you expect to owe $1,000 or more in total federal tax for the year — from your LLC income — you are required to pay quarterly. Skipping payments while earning LLC income doesn't delay your tax bill; it just adds underpayment penalties on top of it.
Quarterly taxes cover two separate taxes. Your LLC quarterly tax payments need to cover both federal income tax (based on your marginal bracket) and self-employment tax (15.3% on 92.35% of net profit). Many new LLC owners only think about income tax and get blindsided by the SE tax portion — which can equal or exceed their income tax bill at lower profit levels.
2026 LLC Quarterly Tax Due Dates
The IRS sets four quarterly tax deadlines per year, and they don't fall on perfectly even three-month intervals. Note that Q2 covers only two months of income (April–May), while Q4 covers four months. This asymmetry trips up many LLC owners who assume equal quarterly payments are always correct.
Q4 falls in January of the next year. The fourth quarter payment covers income earned September through December 2026, but isn't due until January 15, 2027. Don't confuse this with your annual tax return — the return is due April 15, 2027. The Q4 estimated payment is separate and earlier. If you file and pay your full tax return by January 31, 2027, you can skip the Q4 estimated payment.
LLC Quarterly Tax Calculator (2026)
Enter your expected annual net profit below to calculate your estimated quarterly tax payments. The calculator shows your total annual tax burden, breaks it into four equal payments, and generates a personalized payment schedule with each 2026 due date.
Your 2026 Quarterly Payment Schedule
Estimates based on 2026 IRS rates: SE tax 15.3% on 92.35% of net profit, $184,500 SS wage base, standard deduction ($16,100 single / $32,200 MFJ), 20% QBI deduction applied. Federal income tax only — state taxes not included. Not a substitute for professional tax advice. Consult a CPA for your exact situation.
How to Calculate LLC Quarterly Taxes: Step by Step
The IRS provides Form 1040-ES with a built-in worksheet for calculating quarterly estimated taxes. Here's the manual method so you understand what you're paying and why — no guesswork involved.
- Start with expected net profit. Subtract all business expenses from gross revenue. This is your net self-employment income — the base for both SE tax and income tax calculations.
- Calculate self-employment tax. Multiply net profit by 92.35% to get your taxable SE base. Then multiply by 15.3% (12.4% Social Security + 2.9% Medicare). On $80,000 net profit: $80,000 × 0.9235 × 0.153 = $11,306 SE tax.
- Calculate the half-SE deduction. You can deduct 50% of SE tax above-the-line — this reduces your taxable income. In the example: $11,306 ÷ 2 = $5,653 deduction.
- Calculate your taxable income. Take net profit, subtract the half-SE deduction, subtract the standard deduction ($16,100 single / $32,200 MFJ), and subtract the QBI deduction (20% of net profit). In the example (single): $80,000 − $5,653 − $16,100 − $16,000 = $42,247 taxable income.
- Calculate federal income tax. Apply the 2026 tax brackets to your taxable income: 10% on the first $11,600, 12% from $11,601–$47,150. In the example: $1,160 + ($42,247 − $11,600) × 12% = $1,160 + $3,678 = $4,838 income tax.
- Add SE tax + income tax for total annual liability. $11,306 + $4,838 = $16,144 total tax. Divide by 4 = $4,036 per quarterly payment.
Use the Annualized Income Method if income is uneven. If your LLC income fluctuates significantly quarter to quarter (seasonal business, project-based consulting), IRS Form 2210 lets you use the annualized income installment method. You calculate actual income for each period and pay quarterly tax on just that period's earnings — avoiding overpaying in slow quarters. This requires more recordkeeping but eliminates overpayment penalties in low-income quarters.
The Safe Harbor Rule: How to Avoid Underpayment Penalties Completely
The safe harbor rule is the most important concept in LLC quarterly tax planning — and the one most owners never learn until they get hit with a penalty. Safe harbor means you're legally protected from underpayment penalties regardless of how much you owe at filing, as long as you paid enough throughout the year.
There are two safe harbor thresholds. You only need to meet one of them:
| Safe Harbor Method | What You Must Pay | Best For |
|---|---|---|
| Prior-Year Safe Harbor (Standard) | 100% of your prior year's total tax liability | Income similar to or higher than last year |
| Prior-Year Safe Harbor (High Earner) | 110% of prior year's tax (if prior AGI > $150,000) | Income grew significantly; prior AGI over $150K |
| Current-Year Safe Harbor | 90% of current year's actual tax liability | Income dropped significantly from prior year |
Example of the prior-year safe harbor in action: Your 2025 total tax was $18,000. In 2026, your LLC explodes and you end up owing $45,000. If you paid $18,000 in equal quarterly installments during 2026 (four payments of $4,500), you owe no underpayment penalty — even though you owe $27,000 more at filing. You pay the remaining $27,000 on April 15, 2027 with your return, penalty-free.
Ahmad Adil's Take: The prior-year safe harbor is what I personally use every year. It's the lazy (but totally legal) strategy — just look at last year's total tax from line 24 of your 2025 Form 1040, divide by 4, and pay that amount each quarter. Zero calculation, zero guesswork, zero underpayment penalty. If your income grew a lot this year, you'll owe a lump sum in April — but no penalty. Then the following year, your safe harbor amount adjusts up automatically based on the new higher prior-year tax. It takes one minute per quarter.
What Happens If You Miss LLC Quarterly Tax Payments?
Missing an LLC quarterly tax payment — or underpaying — triggers an underpayment penalty under IRC §6654. This is not a late payment penalty in the traditional sense. It's more like interest charged on the unpaid amount for each day it was underpaid.
For 2026, the underpayment penalty rate is the federal short-term rate plus 3 percentage points — approximately 7–8% annualized on the underpaid amount. The IRS calculates it on Form 2210. The penalty applies per quarter, so underpaying all four quarters multiplies the exposure.
The penalty stacks when you miss multiple quarters. If you underpay by $5,000 for all four quarters of 2026, the IRS charges the penalty on each underpaid amount from the due date of each quarter through the tax return due date. Four separate underpayments = four separate penalty calculations. Missing Q1 costs more than missing Q4 because the Q1 amount is underpaid for a longer period. This is why catching up early matters — the Q1 payment missed carries the highest penalty cost.
How to Pay LLC Quarterly Taxes (Free Methods)
You never need to pay a fee to submit quarterly estimated taxes to the IRS. There are three free official methods, all available 24/7. Avoid any third-party service that charges a processing fee — these are unnecessary.
- IRS Direct Pay (direct.irs.gov) — Recommended. Pay directly from your bank account with no fees, no account setup, and instant confirmation. Select "Estimated Tax" as the payment type, then "1040-ES." You can also schedule future payments up to 30 days in advance. Works best for single payments.
- EFTPS — Electronic Federal Tax Payment System (eftps.gov). Free government system requiring one-time enrollment (takes 1–2 weeks for PIN delivery). Lets you schedule all four quarterly payments at the start of the year and forget about it. Best for owners who want to automate. Business and personal accounts available.
- IRS2Go Mobile App. The official IRS mobile app connects to Direct Pay and lets you pay estimated taxes from your phone. Same functionality as the web version — free, instant, with confirmation receipts.
- Mail — Form 1040-ES with check. Download Form 1040-ES from IRS.gov, fill out the payment voucher, and mail with a check payable to "United States Treasury." Slower and harder to track — use only if electronic payment isn't an option. Always send certified mail and keep the receipt.
LLC Taxed as S-Corp: Quarterly Tax Obligations Are Different
If your LLC has elected S-Corp status, your quarterly tax obligations work differently — and you have more obligations, not fewer. As an S-Corp owner-employee, you have two separate streams of tax payments running simultaneously.
- FICA taxes (Social Security + Medicare) withheld via payroll each paycheck
- Federal income tax withheld based on your W-4
- Employer deposits to IRS semi-weekly or monthly via EFTPS
- Quarterly Form 941 filed (April, July, October, January)
- This portion is NOT paid via Form 1040-ES
- S-Corp distributions have no tax withheld automatically
- Income tax on distributions must be paid via quarterly estimates
- Form 1040-ES still required for the distribution portion
- Many S-Corp owners increase their W-4 withholding to cover distribution tax instead
- Consult your CPA on the cleanest approach
The most common S-Corp approach: increase your W-2 withholding on your W-4 to cover both salary income tax and distribution income tax — simplifying everything into a single payroll withholding rather than maintaining separate quarterly estimated payments. Your payroll service can help calibrate this.
5 LLC Quarterly Tax Mistakes That Cost Real Money
- Only setting aside for income tax, ignoring SE tax. The self-employment tax (15.3% on 92.35% of net profit) hits separately from income tax. At $80,000 net profit, SE tax alone is $11,306 — before income tax. Always calculate both together. The 25–30% set-aside rule accounts for this combined burden.
- Using gross revenue instead of net profit. Quarterly taxes are calculated on net profit — revenue minus all legitimate business expenses. Paying estimated taxes on gross revenue massively overpays and ties up cash. Track expenses monthly so your net profit estimate is accurate each quarter.
- Missing the June due date because it doesn't feel like a quarter-end. The Q2 deadline (June 16) covers only April and May — many LLC owners miss it because June doesn't feel like a quarter boundary. Put all four 2026 dates in your calendar now: April 15, June 16, September 15, January 15, 2027.
- Not adjusting payments when income spikes mid-year. If your LLC has an unexpectedly good Q3, your Q4 payment should increase to catch up — or you'll owe a large lump sum plus potential penalty shortfall in April. Review your year-to-date profit before each quarterly payment and adjust.
- Paying by check without keeping proof. If the IRS claims a check payment was never received, the burden of proof is on you. Always use electronic payment via Direct Pay or EFTPS for a timestamped, confirmation-number receipt. If you must mail a check, send certified mail and photograph the completed voucher and check before mailing.
Do You Also Owe State Quarterly Estimated Taxes?
Most states with personal income tax also require quarterly estimated tax payments — separate from your federal LLC quarterly taxes. The threshold, due dates, and forms vary by state, but they typically mirror the federal system.
States with no personal income tax — Florida, Texas, Wyoming, Nevada, South Dakota, Washington, and Tennessee — have no state quarterly estimated tax requirement for LLC owners. In those states, your only obligation is the federal Form 1040-ES payments described above.
For California LLC owners: you also owe California's quarterly estimated payments using Form 540-ES. California has a different schedule — with an unusual Q1/Q2 combined payment pattern. California's LLC tax obligations also include the $800/year minimum franchise tax. See our LLC Annual Fees by State guide for a complete picture.
- ✓Your LLC structure determines your quarterly tax obligations — set it up correctly from Day 1
- ✓$39 + state fee — includes operating agreement template and EIN guidance
- ✓1 FREE year of Registered Agent ($125 value) — then $125/yr flat, price-locked
- ✓Privacy by Default — your home address never hits public records
- ✓No upsells · Never sells your data · Same-day filing available
Disclosure: LLC School may earn a commission via this link, at no cost to you. We recommend Northwest because of their price-locked RA fee, Privacy by Default policy, and no data-selling practices. See our advertising disclosure.
LLC Quarterly Taxes — FAQ
Ahmad Adil is the founder and CEO of LLC School. Every due date, rate, and threshold in this guide is verified against current IRS publications and the 2026 tax year schedule. LLC quarterly tax deadlines are confirmed against the IRS Tax Calendar and Publication 505. This guide is educational and does not constitute tax advice — consult a licensed CPA for your specific situation.
About Ahmad Adil → LLC Taxes Overview →