Quarterly Estimated Taxes Explained (2026 Due Dates + How to Pay)

Short answer: Quarterly estimated taxes are four advance payments of income tax and self-employment tax that the IRS expects from anyone who will owe $1,000 or more for the year with no withholding to cover it, such as 1099 contractors and sole proprietors. For the 2026 tax year, the four due dates are April 15, 2026; June 15, 2026; September 15, 2026; and January 15, 2027. Paying 100% of last year’s tax (110% above $150,000 of AGI) in four equal parts protects you from the underpayment penalty, and you can pay online in minutes through IRS Direct Pay or EFTPS.

The U.S. tax system is pay-as-you-go. W-2 employees satisfy that through paycheck withholding; 1099 workers satisfy it by making estimated payments themselves. Here is how the system works and how to stay penalty-free.

What are quarterly estimated taxes?

Quarterly estimated taxes are periodic prepayments of the income tax and self-employment tax you expect to owe on income that has no withholding. This includes freelance and gig income, contractor pay, business profit, and often investment or rental income.

Each payment is not a separate bill. It is an installment toward one annual total, credited against what you owe when you file. The IRS overview is at irs.gov.

Who has to pay quarterly estimated taxes?

You generally must pay estimated taxes if both of these are true:

• You expect to owe at least $1,000 in tax for the year after subtracting withholding and refundable credits, and
• Your withholding and credits will be less than the smaller of 90% of this year’s tax or 100% of last year’s tax (110% if your prior-year adjusted gross income was over $150,000, or $75,000 if married filing separately).

You typically do not need to make estimated payments if you had no tax liability last year, you were a U.S. citizen or resident for the whole year, and your prior tax year covered 12 months.

Do I have to pay estimated taxes in my first year of freelancing?

Your first year is where the rules surprise people most, and they surprise in both directions.

If your last return showed no tax liability at all, the exception above applies: you owe no underpayment penalty this year no matter how much you earn. Nothing stops you from paying anyway, and most people should, because the bill still arrives in April whether or not a penalty comes with it.

If you left a W-2 job partway through last year and owed tax on that income, your safe harbor is 100% of that total tax — often a small number next to what you will earn freelancing. Four installments of a quarter of it protect you from penalties while leaving a large balance due at filing. Plan for the balance, not just the penalty.

One more lever worth knowing: if you or your spouse still holds a W-2 job, withholding counts as paid evenly across the year regardless of which paycheck it came out of. Raising withholding on that job is often simpler than making four separate payments, and it can cover a shortfall from earlier in the year.

When are quarterly taxes due for self-employed and 1099 workers in 2026?

Quarterly taxes for self-employed and 1099 workers are due April 15, June 15 and September 15, 2026, and January 15, 2027, for the 2026 tax year — one date covers both the income tax and the self-employment tax on that income.

There are no separate quarterly self-employment tax dates: the 15.3% self-employment tax is simply part of the estimated payment you send on each of the four deadlines below. If a date lands on a weekend or legal holiday, the deadline shifts to the next business day; all four 2026-cycle dates fall on weekdays.

Quarter	Income period covered	2026 tax year due date
Q1	January 1 – March 31, 2026	April 15, 2026
Q2	April 1 – May 31, 2026	June 15, 2026
Q3	June 1 – August 31, 2026	September 15, 2026
Q4	September 1 – December 31, 2026	January 15, 2027

Note that these “quarters” are not equal three-month blocks — Q2 covers two months and Q4 covers four. Mark all four dates now so none sneaks up on you. If you also need corporate deadlines, Canadian instalment dates, or the day of the week each one falls on, the full quarterly tax calendar has them.

How much should I pay in quarterly estimated taxes?

Pay one-quarter of whichever is smaller — 100% of last year’s total tax (110% if your prior-year AGI was over $150,000) or 90% of this year’s expected tax — on each of the four due dates.

There are two reliable ways to get to that number.

• The safe harbor method (simplest). Pay 100% of last year’s total tax (110% if your prior-year AGI exceeded $150,000), split into four equal payments. If last year’s Form 1040 showed $12,000 of total tax, that is $3,000 on each due date. Do this and you generally avoid penalties even if you earn more this year.
• The current-year method. Estimate this year’s net profit — the same figure that ends up on Schedule C — calculate the tax with the Form 1040-ES worksheet, and pay 90% of it across the four installments. This fits better when your income is rising or falling sharply. Remember that the estimate has to include self-employment tax as well as income tax; on a net profit of $60,000, the self-employment tax alone is about $8,478 ($60,000 × 92.35% × 15.3%), before any income tax.

What if my income changes mid-year?

Nothing about the first payment locks in the other three. When a large contract lands in July or a retainer client disappears in September, refigure the rest of the year on the Form 1040-ES worksheet: work out your revised total tax for the year, subtract what you have already paid plus any withholding, and divide the remainder across the installments you have left.

Lowering a payment is where people get caught. If the first two installments were already short of what was required, cutting the third does not undo the earlier shortfall — the penalty is calculated period by period, not on the year as a whole. Pay the catch-up amount as soon as you notice it rather than spreading it forward.

If your income arrives in bursts rather than evenly, the annualized income installment method lets each payment track what you actually earned in that period, reported on Form 2210, Schedule AI when you file. It demands clean period-by-period income and expense totals, but for seasonal work it can bring a penalty to zero. The simpler defense is to hold back a fixed share of every payment as it arrives — our guide to how much to set aside for 1099 taxes works through the percentages.

How do I pay the IRS?

Paying is faster than filing. Your main options:

1. IRS Direct Pay — pay directly from a checking or savings account with no fee, at irs.gov.
2. EFTPS (Electronic Federal Tax Payment System) — free, lets you schedule payments in advance, and keeps a payment history.
3. Debit or credit card — accepted through IRS-approved processors, but they charge a fee.
4. Mail a check with a Form 1040-ES voucher, if you prefer paper.

Whatever method you choose, keep the confirmation. Your records are your proof the payment was made and on time.

Regional note: In the UK, self-employed people do not pay quarterly. HMRC uses Self Assessment with a balancing payment due January 31 and two “payments on account.” In Canada, the CRA may require quarterly instalments (due March 15, June 15, September 15, and December 15) when your net tax owing exceeds a set threshold.

What is the penalty for not paying quarterly estimated taxes?

The penalty for not paying quarterly estimated taxes is interest-like: the IRS charges its underpayment rate on each installment that was short, for the number of days it stayed short.

That rate is the federal short-term rate plus 3 percentage points, reset every calendar quarter and published on the IRS quarterly interest rates page. It is worked out on Form 2210, though most people simply let the IRS compute it and send a bill. Paying the full balance in April does not erase a penalty for missing earlier installments, because each period is measured on its own. There is no penalty if the tax you owe at filing, after withholding and credits, is under $1,000, or if you met the safe harbor.

If you missed a quarter, do not wait for the next one — pay as soon as you can to stop the penalty from growing. Meeting the safe harbor over the year can reduce or eliminate the penalty.

How does staying organized make quarterly taxes painless?

Quarterly taxes are only stressful when you scramble to reconstruct your numbers four times a year. If your income, receipts, and mileage are already logged, each deadline becomes a quick review instead of a fire drill.

Keel: Invoice Maker & Receipts keeps those numbers current between deadlines. It creates invoices so your income is clear, captures receipts on your iPhone (the app proposes details from a scan and you approve), and logs each business trip with its date, miles and purpose — which matters in 2026, when the IRS mileage rate moved from 72.5¢ to 76¢ on July 1. Everything stays encrypted on your device — no bank connection, no cloud, no account — and exports as one file when you calculate each payment or file your return. Keel is not a bank-linked automated all-in-one; the honest tradeoff for that privacy is a bit of manual entry, which many solo workers happily accept. Get Keel on the App Store.

Frequently asked questions

When are 1099 quarterly taxes due in 2026? For the 2026 tax year, 1099 and other self-employed payments are due April 15, 2026; June 15, 2026; September 15, 2026; and January 15, 2027. All four fall on weekdays this cycle, so none of them shift; when a due date does land on a weekend or legal holiday, it moves to the next business day. Watch the periods behind the dates rather than the dates alone — Q2 covers only two months of income and Q4 covers four.

What is the safe harbor rule for estimated taxes? If you pay at least 100% of last year’s total tax in four timely installments — 110% if your prior-year AGI was over $150,000 — you generally avoid an underpayment penalty even if you owe far more when you file. The appeal is that it is built on a number you already have on last year’s return, so it takes no forecasting. It protects you from the penalty, not from the balance: whatever you still owe is due at the April filing deadline.

Can I skip the January payment? You may skip the January 15, 2027 installment if you file your 2026 return and pay the balance in full by February 1, 2027. Treat that as a hard deadline rather than a grace period — a return filed a day late does not qualify, and the penalty for the missed fourth installment applies as though you had simply skipped it. Most people find it easier to send the January payment and file at their normal pace.

Do I have to pay exactly one-quarter each time? No. Equal quarters are the default because they need no extra records, but you can pay amounts that track when you actually earned the income, using the annualized income installment method and reporting it on Form 2210, Schedule AI. The extra bookkeeping pays off when your income is seasonal — for instance when most of the year’s work lands in the last few months and equal payments would have you overpaying in April and June.

Do quarterly payments cover state taxes too? No. Federal estimated payments go to the IRS only. If your state levies an income tax, it almost always runs its own estimated-payment schedule and its own online portal, and its due dates do not always match the federal ones. Check your state revenue department early in the year rather than in December. A handful of states have no income tax at all, in which case there is nothing extra to send.

Can I pay estimated taxes all at once instead of quarterly? Yes, if you pay early: you can send the whole year’s estimate by the April 15 deadline, and the IRS applies it to the first installment and carries the excess forward to the later ones. Paying it all at the end does not work the same way, because a lump sum in January cannot cover the April, June and September installments retroactively, so the penalty still runs on those periods. Overpaying early is never penalized; any excess comes back as a refund or rolls to next year.

How do I avoid paying quarterly estimated taxes? You can legally avoid separate quarterly payments in three ways: owe less than $1,000 at filing after withholding and credits, have had zero tax liability for a full prior year, or cover the tax through W-2 withholding instead. If you or your spouse has a paycheck, increasing withholding on Form W-4 works because withholding is treated as paid evenly through the year, even if you raise it in November. None of these reduce the tax itself; they only change how it is paid.

What happens if I forgot to pay my quarterly estimated taxes? Pay the missed amount as soon as you notice, through IRS Direct Pay or EFTPS; the underpayment penalty is figured day by day, so a late payment costs less than a skipped one. Then keep making the remaining installments on time. When you file, Form 2210 (or the IRS itself) works out the penalty, and you can ask for a waiver if the shortfall came from a casualty, disaster or other unusual circumstance.

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This article is general information, not tax advice. Consult a qualified tax professional.