Quarterly estimated taxes for freelancers in 2026

Why do freelancers pay estimated taxes quarterly?

Federal income tax is pay-as-you-go. An employer withholds tax from every paycheck. When a client pays you on a 1099, nobody withholds anything, so the IRS expects you to send the tax yourself during the year. These payments are called estimated taxes, and they cover both your income tax and your self-employment tax.

2026 due dates

The IRS splits the year into four payment periods. They are not equal quarters: the second period is two months and the last is four.

If a due date lands on a Saturday, Sunday, or legal holiday, a payment made the next business day is on time. You can skip the January 15, 2027 payment if you file your 2026 return by January 31, 2027 and pay everything you owe with it.

Who has to pay estimated tax

The basic test is the $1,000 rule: you generally must make estimated payments if you expect to owe $1,000 or more in tax for the year after subtracting your withholding and refundable credits. Most freelancers with a steady client base cross that line quickly. Self-employment tax alone is about 14.1% of net profit, so roughly $7,100 of profit already produces $1,000 of SE tax before any income tax.

If you also have a W-2 job, the withholding from that job counts. Some people with a side business raise their W-2 withholding instead of sending quarterly payments. Withholding is generally treated as paid evenly across the four due dates, even if most of it came out late in the year.

The safe harbor rules

You can owe more tax when you file and still avoid the underpayment penalty, as long as your withholding plus timely estimated payments reach the smaller of these two amounts:

1. 90% of your 2026 tax, the tax shown on the return you file for this year.
2. 100% of your 2025 tax, the tax shown on last year's return. That return must cover all 12 months.

Higher incomes use 110%. If the adjusted gross income on your 2025 return was more than $150,000 ($75,000 if married filing separately), replace 100% with 110% in the prior-year test.

The prior-year test is popular with freelancers because the number is fixed. Last year's total tax is printed on last year's return, so you can divide it by four on January 1 and know your payments for the year. If your income jumps, you will owe the difference in April, but without a penalty. If your income drops, the 90% current-year test may let you pay less.

These are illustrations of how the rule works, not payment instructions. The required amount is reduced by any withholding you have.

The underpayment penalty

If you pay too little or too late, the IRS charges a penalty on the shortfall. It is figured separately for each payment due date, based on how much was short and for how long. That is why a large payment in January does not fully fix a missed payment the previous June.

The penalty is calculated on Form 2210, but the IRS generally figures it for you and sends a bill. You file Form 2210 yourself only in certain cases, such as asking for a waiver or using the annualized income method below. The IRS can waive the penalty when the underpayment was due to a casualty, disaster, or other unusual circumstance, or when you retired after age 62 or became disabled and had reasonable cause.

Uneven income: the annualized income method

Freelance income is rarely smooth. If most of your money arrives late in the year, equal payments can overstate what you owed early on. The annualized income installment method lets you base each payment on the income you actually earned through the end of that period. Publication 505 has a worksheet for planning, and you claim it on your return with Schedule AI of Form 2210. It takes more work, so it is worth discussing with a tax professional if your income is very lumpy.

How to pay

The IRS accepts estimated payments several ways. Electronic options give you a confirmation right away.

• IRS Online Account at irs.gov/account. You can pay from a bank account and see the payments you have already made, which helps when you file.
• IRS Direct Pay. Pays from a checking or savings account with no fee and no registration.
• EFTPS, the Electronic Federal Tax Payment System. Requires enrollment, but lets you schedule one-time or recurring payments in advance.
• Debit or credit card through an IRS-approved processor. Processing fees apply.
• Check or money order mailed with a Form 1040-ES voucher, payable to "United States Treasury."

You can also apply some or all of an overpayment from your 2025 return to your 2026 estimated tax instead of taking a refund. Once applied, that money cannot be used to pay a later bill for 2025.

State estimated taxes

Most states with an income tax have their own estimated payment rules and due dates, separate from the IRS. State tax is not covered by your federal payments. Check your state's revenue department, or see the state pages for how state tax changes your numbers.

Working out your amount

The quarterly estimated tax calculator estimates your 2026 federal tax from your expected profit and splits it into the four payments. If you are not sure how much of each invoice to keep, read how much to set aside for taxes on 1099 income. And if taxes are squeezing your take-home pay, the freelance rate calculator shows the hourly rate you need once tax is built in.

If your income changes sharply partway through the year, you can recalculate and adjust the remaining payments. A tax professional can help you pick between the prior-year and annualized approaches when the stakes are high.