How to File 1099 Quarterly Taxes: Deadlines, Amounts, and Methods

If you receive 1099 income, you generally owe 1099 quarterly taxes to the IRS four times a year using Form 1040-ES. For 2026, the deadlines are April 15, June 15, September 15, and January 15, 2027. You have to make these payments if you expect to owe at least $1,000 in federal tax after withholding and credits, and the amount you send each quarter should cover both your federal income tax and self-employment tax on the money you earned in that period.¹

Who Has to Pay Quarterly

The requirement kicks in when you expect to owe at least $1,000 in federal tax for the year after subtracting any withholding and refundable credits. That threshold comes directly from the tax code and applies to sole proprietors, freelancers, partners, and S corporation shareholders.² It also covers people with significant investment income, rental income, or alimony. Anywhere no one is withholding tax for you, the IRS expects you to pay as you go.¹

One clean exemption exists. If you had zero tax liability for the entire prior year, were a U.S. citizen or resident for that full year, and the year covered a full 12 months, you owe no estimated payments in the current year.³ Zero liability means the “total tax” line on your prior-year Form 1040 was literally zero, not that you got a refund.

The 2026 Payment Deadlines

The IRS splits the year into four unequal payment periods. For 2026, the deadlines are:⁴

April 15, 2026, for income earned January 1 through March 31
June 15, 2026, for income earned April 1 through May 31
September 15, 2026, for income earned June 1 through August 31
January 15, 2027, for income earned September 1 through December 31

The second period covers only two months and the third covers three. If any deadline falls on a weekend or federal holiday, the due date moves to the next business day.³

You can skip the January 15 payment if you file your annual return and pay any remaining balance by January 31. Tight window, but it works if your records are ready early.

How Much Each Payment Should Be

You can avoid an underpayment penalty by hitting one of two safe harbors. Either pay at least 90% of what you actually end up owing for the current year, or pay 100% of the total tax shown on your prior-year return.¹ Most 1099 workers use the prior-year method because the number is already sitting on last year’s Form 1040.

One catch: if your prior-year adjusted gross income exceeded $150,000 ($75,000 if married filing separately), the safe harbor becomes 110% of last year’s tax, not 100%.² Established freelancers who simply divide last year’s tax by four and pay that can still get penalized once they cross the threshold.

Don’t Forget Self-Employment Tax

When you had a W-2 job, your employer withheld Social Security and Medicare taxes and matched them. Working for yourself, you pay both halves. The combined self-employment tax rate is 15.3%: 12.4% for Social Security and 2.9% for Medicare.⁵ This runs on top of your federal income tax and is the single biggest reason new 1099 workers underpay their quarterlies.

For 2026, the Social Security portion applies to the first $184,500 of net self-employment earnings.⁵ The Medicare portion has no cap. If your net self-employment income exceeds $200,000 ($250,000 for joint filers), you also owe an Additional Medicare Tax of 0.9% on the amount above that threshold.⁶

You can deduct half of your self-employment tax when calculating adjusted gross income.⁷ That deduction lowers your income tax but not the self-employment tax itself. A good quarterly estimate accounts for both.

Running the Numbers

Form 1040-ES includes an Estimated Tax Worksheet built for this.¹ Estimate your total income for the year, subtract adjustments and deductions (including half of your SE tax), calculate your expected income tax and self-employment tax, then subtract any credits you expect to claim. Divide by four for each quarterly installment.

Your deductions drive the result. For 2026, the standard deduction is $16,100 for single filers, $32,200 for married couples filing jointly, and $24,150 for heads of household.⁸ Self-employed people can also claim the qualified business income deduction under Section 199A, worth up to 20% of qualified business income; for 2026 it applies without extra limits if your taxable income stays under $201,750 ($403,500 for joint filers). Above those thresholds, wage-and-asset limits phase in. If you pay your own health insurance premiums, the self-employed health insurance deduction reduces your adjusted gross income and belongs in the worksheet.⁹

If projecting this year’s income feels like guesswork, use last year’s return instead. Take the total tax from your prior-year Form 1040, divide by four, and pay that each quarter. If your prior-year AGI was under $150,000, this keeps you penalty-free regardless of how the current year turns out. Use 110% instead of 100% if you cleared the threshold.²

When Your Income Is Uneven

Equal quarterly installments assume you earn roughly the same each period. Freelance income rarely works that way. A big Q3 project or a slow winter can leave you overpaying in one period and short on cash in another.

The IRS allows an alternative called the annualized income installment method. Each installment is based on the income you actually earned through the end of that period, not on a flat annual estimate.¹⁰ Earn little in Q1 and your first payment is proportionally small. A Q3 windfall means Q3 absorbs the bulk of the tax.

The trade-off is paperwork. You complete Schedule AI of Form 2210 for all four periods, not just one, and attach it to your annual return.¹⁰ For highly seasonal earners the cash-flow benefit tends to justify it.

If your income simply shifts mid-year, say you pick up a new client in May, you can recalculate and adjust the remaining installments using the Amended Estimated Tax Worksheet in Publication 505.⁷ Start paying the revised amount on the next due date.

How to Send the Payment

The IRS accepts estimated payments through several channels. Two are free.

IRS Direct Pay

Direct Pay transfers funds from a checking or savings account to the IRS at no cost.¹¹ You get a confirmation number right after submitting. No registration is required; you just need your bank details and identifying information from a prior return. It won’t let you schedule payments far in advance.

EFTPS

EFTPS is also free and lets you schedule payments up to 365 days ahead, which is its main advantage over Direct Pay.¹² You have to register in advance and wait for a PIN by mail, so set it up well before your first payment is due. Payments must be scheduled by 8 p.m. Eastern the day before the deadline to count as on time.¹³ Entering a payment on the actual due date makes it late.

Credit or Debit Card

You can pay through IRS-authorized processors, but convenience fees apply. Debit card transactions run about $2.10 to $2.15 as a flat fee. Credit card payments cost 1.75% to 1.85% of the amount, with a $2.50 minimum.¹⁴ On a $5,000 payment, credit card fees run $87 to $93. Unless you’re chasing rewards that beat the fee, bank transfer wins.

Mail

You can mail a check or money order with the matching payment voucher from Form 1040-ES. The vouchers are numbered 1 through 4, one per payment period.⁴ Write your Social Security number and “2026 Form 1040-ES” on the check. The correct address depends on your state and appears in the form instructions. Use a mail service with tracking. If the IRS says the payment never arrived, the postmark is your only proof.

What Underpaying Costs

The underpayment penalty is essentially interest on the amount you should have paid. It runs from each installment’s due date until you actually pay or until April 15 of the following year, whichever comes first. The rate for the first quarter of 2026 is 7%, applied daily.¹⁵ Each quarter is calculated separately, so a late Q1 doesn’t infect the other three.

The IRS figures the penalty using Form 2210 and will often calculate it for you and send a bill. You can also calculate it yourself. The penalty applies even if your annual return shows a refund. You can owe a penalty for late quarterly payments and still get money back overall.

State Quarterly Payments

Federal quarterly payments don’t cover state tax. If you live in a state with an income tax, you likely owe state-level estimated payments too, and the thresholds, deadlines, and safe harbor rules don’t always match the federal schedule. Some states require payments when you expect to owe as little as a few hundred dollars. Check your state department of revenue for the specific rules before assuming federal compliance covers you.

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Internal Revenue Service. Estimated Taxes
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Office of the Law Revision Counsel. 26 USC 6654 – Failure by Individual to Pay Estimated Income Tax
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Internal Revenue Service. Estimated Tax – Frequently Asked Questions
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Internal Revenue Service. Form 1040-ES, Estimated Tax for Individuals
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Social Security Administration. Contribution and Benefit Base
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Internal Revenue Service. Topic No. 560, Additional Medicare Tax
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Internal Revenue Service. Publication 505 (2025), Tax Withholding and Estimated Tax
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Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026
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Internal Revenue Service. Self-Employment Tax (Social Security and Medicare Taxes)
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Internal Revenue Service. 2025 Instructions for Form 2210 – Underpayment of Estimated Tax by Individuals, Estates, and Trusts
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Electronic Federal Tax Payment System (EFTPS). Welcome to EFTPS Online
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Internal Revenue Service. Quarterly Interest Rates