Quarterly Tax Deadlines 2026: When to Pay and How Much

If you're a freelancer, independent contractor, or self-employed worker, the IRS expects you to pay taxes throughout the year — not just once in April. These are called estimated quarterly tax payments, and missing them can result in penalties even if you pay everything you owe when you file.

This guide covers every deadline for 2026, how to calculate each payment, and strategies to make the process painless.

2026 Quarterly Tax Due Dates

The IRS divides the tax year into four unequal payment periods. Here are the due dates for tax year 2026:

Q1 (Jan 1 – Mar 31): Due April 15, 2026
Q2 (Apr 1 – May 31): Due June 15, 2026
Q3 (Jun 1 – Aug 31): Due September 15, 2026
Q4 (Sep 1 – Dec 31): Due January 15, 2027

If a due date falls on a weekend or federal holiday, the deadline moves to the next business day. Note that Q2 only covers two months while Q3 covers three — the periods aren't evenly split.

Who Needs to Make Quarterly Payments?

You're required to make estimated quarterly payments if you expect to owe $1,000 or more in taxes when you file your annual return. This applies to most freelancers and self-employed workers because no employer is withholding taxes from your income.

Even if you have a W-2 job that withholds taxes, you may still need to make quarterly payments on your freelance income. The test is whether your total withholding covers your total tax liability — if it falls short by $1,000 or more, quarterly payments are required.

How to Calculate Your Quarterly Payment

The simplest approach is to estimate your total annual tax liability and divide by four. Your total tax includes two components: self-employment tax (15.3% of net earnings) and federal income tax (based on your tax bracket).

Here's the step-by-step process:

First, estimate your net self-employment income for the year — your gross 1099 income minus business expenses. Then calculate your self-employment tax on that amount using the 92.35% taxable base rule. Next, figure your federal income tax by applying the standard deduction and your tax bracket to your adjusted gross income. Add the two together, subtract any withholding from W-2 jobs, and divide the remainder by four.

Our Quarterly Tax Estimator does all of this math for you instantly.

The Safe Harbor Rule

Don't want to worry about underpayment penalties? The IRS provides two safe harbor options. If you pay at least 90% of your current year's tax liability across your four quarterly payments, you're safe. Alternatively, if you pay at least 100% of last year's total tax (110% if your AGI was above $150,000), you're also protected from penalties — even if you end up owing more when you file.

Many freelancers with variable income prefer the "100% of last year" method because it provides a fixed, known number to work with regardless of how the current year goes.

What Happens If You Miss a Payment

The IRS charges an underpayment penalty that functions like interest on the amount you should have paid for each quarter you missed or underpaid. The penalty rate is the federal short-term rate plus 3%, and it compounds quarterly. While the penalty typically isn't enormous, it adds up — and it's entirely avoidable.

How to Pay

The easiest method is IRS Direct Pay (irs.gov/payments), which lets you pay directly from your bank account for free. You can also use the Electronic Federal Tax Payment System (EFTPS), pay by credit or debit card (processing fees apply), or mail a check with Form 1040-ES.

When paying online, select "Estimated Tax" as the payment type and the appropriate tax year and quarter. Save your confirmation numbers.

Tips for Managing Quarterly Payments

Set aside a percentage of every payment you receive into a separate savings account for taxes. A common rule of thumb is 25-30% of your gross freelance income, though the exact amount depends on your total tax situation. Read our full guide on how to save for taxes as a freelancer for a detailed system.

Calendar reminders two weeks before each deadline give you time to calculate and submit your payment without last-minute stress. And if your income changes significantly mid-year, recalculate your estimated payments rather than sticking with a number that's too high or too low.

Don't Forget State Taxes

Most states with income tax also require estimated quarterly payments, often on the same schedule as the IRS. Check your state's department of revenue website for deadlines and payment methods. Some states have different thresholds and safe harbor rules.