Quarterly Tax Due Dates 2026: Complete Calendar for Estimated Payments

Nobody withholds taxes from freelance checks, owner draws, rental deposits, or brokerage gains — the IRS expects you to send money four times a year, and it charges interest when you don't. This is the quick-reference page: every 2026 estimated-tax deadline, exactly how much keeps you penalty-free, and what to do if you're already behind.

When are quarterly estimated taxes due in 2026?

Mark these four dates (plus the one that just passed and the one that ends the cycle). Note the quarters are not even three-month blocks — Q2 covers only two months, a quirk that catches people every June.

When a due date lands on a weekend or federal holiday, it rolls to the next business day — none of the 2026 dates need that adjustment. (Taxpayers in federally declared disaster areas often get postponed deadlines; check current IRS relief notices if that's you.)

These are the personal estimated-tax dates. Your business has its own parade of deadlines — 1099s, payroll forms, entity returns — all collected in our Small Business Tax Calendar 2026.

Who has to make estimated payments?

Generally, anyone who expects to owe $1,000 or more for 2026 after subtracting withholding and credits. In practice that means:

• Self-employed people, freelancers, and gig workers
• S-corp and partnership owners receiving K-1 income
• Landlords with taxable rental profit
• Investors with meaningful capital gains, dividends, or crypto sales
• Retirees with IRA withdrawals or pensions that under-withhold

Corporations have their own regime (payments required once expected tax hits $500, due April 15, June 15, September 15, and December 15 for calendar-year C-corps). Farmers and fishermen get special single-payment rules. W-2 employees with a side hustle can often skip separate payments entirely by increasing job withholding — more on that trick below.

How much should you pay? (The safe harbor rules)

You don't have to nail your 2026 tax bill in advance. You just have to hit one of the safe harbors — pay the smaller of:

• 90% of your actual 2026 tax, or
• 100% of your 2025 total tax — bumped to 110% if your 2025 adjusted gross income was over $150,000 ($75,000 married filing separately)

...spread across the four dates, and you're penalty-proof no matter how good your year turns out. Any remaining balance is simply due with your return in April 2027.

A hedged example: Jordan's freelance design business is growing fast in 2026. Her 2025 total tax was $18,000 and her 2025 AGI was under $150,000. Four payments of $4,500 (100% of last year) keep her fully penalty-protected — even if her 2026 tax lands at $30,000. She'll owe the extra $12,000 next April, but with zero penalty, and the cash worked for her all year. If her AGI had been over $150,000, the target would be $19,800 (110%), or $4,950 per quarter.

Prior-year safe harbor is the planner's default because it's a known number in January. The 90%-of-current-year route suits people whose income dropped — why prepay last year's bigger bill?

What happens if you're late or skip one?

The "penalty" is really interest, computed quarter by quarter on each shortfall from its due date until paid (Form 2210 does the math). The rate is the IRS underpayment rate — during 2026 it has run 7% (Q1), 6% (Q2), and 7% (Q3), compounded daily.

Real-world scale: miss a $5,000 Q2 payment by three months and the cost is roughly $75–$95 — annoying, not catastrophic. Miss all four quarters on a $40,000 liability and you're into four figures. Three things to know:

• Paying late beats not paying. Interest stops accruing on amounts the day they arrive; send money as soon as you can, even mid-quarter.
• You can't cure it retroactively with a big Q4 check — each quarter stands alone. (Withholding is the exception; see below.)
• Exceptions exist: generally no penalty if you owe under $1,000, had no tax liability last year (as a U.S. citizen/resident with a 12-month tax year), or qualify for casualty/disaster/retirement-age reasonable-cause waivers.

If you're reading this in July having paid nothing for 2026: pay Q1+Q2 catch-up now, right-size Q3 on September 15, and the damage stays small. Problems come here to get solved.

How do you actually pay?

Fastest to slowest:

• IRS Online Account — pay from your bank, see your payment history (the cleanest way to answer "did I already pay Q2?")
• IRS Direct Pay — no login, bank transfer, free
• EFTPS — the Treasury's system; required for many business payments, great for scheduling all four dates in one sitting
• Debit/credit card or digital wallet — processor fees apply
• Mail a check with a Form 1040-ES voucher — legal, slow, and the easiest to get lost

Select tax year 2026, estimated tax when prompted — misapplied payments (wrong year, wrong type) are a support-ticket classic. Most states with income tax run parallel quarterly systems with similar dates; don't forget yours.

What if your income is uneven or spikes late in the year?

Two tools rescue lumpy earners:

1. The annualized income method (Form 2210, Schedule AI): compute each quarter's required payment from income actually earned to date. If 70% of your income lands in Q4 — seasonal business, year-end bonus, December crypto or stock sale — this can erase penalties the even-quarters math would charge.
2. The withholding time machine: tax withheld from any paycheck, bonus, or IRA distribution is treated as paid evenly through the year, no matter when it actually comes out. A December withholding boost can retroactively cover a Q1 shortfall in a way a December estimated payment cannot. Couples where one spouse has a W-2 can often solve the whole household's estimates with a single W-4 adjustment.

If a mid-year event changed your 2026 picture — a business surge, a sale, or one of this year's law changes (see the 2026 tax changes hub) — re-run the safe-harbor math before September 15 rather than in April.

FAQ

Are the quarterly dates ever moved?

Only when they hit a weekend or holiday (none do in 2026) or when the IRS grants disaster-area postponements. The January 15, 2027 payment is the next one after September.

Do I have to pay four equal amounts?

The safe harbor assumes four equal installments, but the annualized method lets payments track when income actually arrived. Equal payments of the prior-year safe harbor are simplest; annualizing is for genuinely lumpy years.

Can I just pay everything on January 15?

You can — but the earlier quarters' penalties still apply, since each installment is tested separately. The exception is withholding, which counts as if paid evenly all year.

What about my state?

Most income-tax states require their own estimates, usually (not always) on the same four dates, each with its own safe-harbor rules. Multi-state earners should map both calendars at once.

Can WAYG just calculate these for me?

Yes — quarterly estimate calculations and reminders are built into our year-round plans (see pricing). We set the safe-harbor targets in January, adjust mid-year if your income moves, and you never have to think about Form 2210.

Reviewed by the WAYG tax team · Updated July 2026