Quarterly Estimated Taxes for Freelancers: 2026 Guide

Published: March 5, 2026 · Reading time: 14 min

TL;DR: If you expect to owe $1,000 or more at tax time, pay quarterly estimated taxes in April, June, September, and January. Use prior-year tax or 90% of current-year tax as a safe harbor to avoid underpayment penalties.

Freelancers do not have an employer withholding tax from each paycheck. If you expect to owe $1,000 or more at tax time, the IRS generally expects you to pay quarterly estimated taxes during the year. This guide covers who must pay, 2026 deadlines, how to estimate the amount, how to pay, and how to avoid underpayment penalties.

For the full filing picture, see How to File Taxes as a Freelancer. For a year-round to-do list, use the Freelancer Tax Checklist 2026.

Who must pay quarterly estimated taxes?

You generally need to pay estimated taxes if:

• You expect to owe at least $1,000 in tax for the year after subtracting withholding and credits, and
• Your withholding and credits will be less than 90% of the current year tax or 100% (or 110% for higher income) of the prior year tax.

Most freelancers and 1099 workers have little or no withholding, so if their income is enough to create a tax bill of $1,000 or more, they fall into this bucket. If you had a prior year with similar income, using that year’s tax as a baseline can simplify your estimates (safe harbor).

2026 quarterly estimated tax deadlines

Payments are due four times a year. For 2026 income, the deadlines are typically:

If a due date falls on a weekend or holiday, the IRS may move it to the next business day. Confirm on irs.gov or with your preparer.

How to estimate what to pay each quarter

You can estimate in a few ways:

1. Prior-year safe harbor – Pay 100% of the tax you owed last year (110% if your prior-year AGI was over a certain threshold). If you pay that much on time, you generally avoid underpayment penalty even if your actual tax is higher. Good when income is similar to last year.
2. Current-year estimate – Estimate this year’s income and deductions, calculate the tax, and pay 90% or more of it in equal (or income-weighted) installments. More accurate when income or expenses changed a lot.
3. Annualized income – If income is uneven (e.g. most income in Q4), you can use the annualized income method so each quarter’s payment matches the income earned so far. Reduces overpaying early in the year.

Many freelancers use a mix: start with prior-year safe harbor so they are covered, then true up at filing time. For a simple approach, divide your expected annual tax by four and pay that amount each quarter, then adjust as the year goes on.

Staying on top of income and expenses (e.g. with a receipt and expense workflow) makes quarterly estimates easier to update.

How to pay estimated taxes

• IRS Direct Pay – Pay from your bank account at irs.gov.
• EFTPS – Electronic Federal Tax Payment System; schedule payments in advance.
• Check with Form 1040-ES – Mail the payment voucher and check to the IRS address for your state.
• Tax software or preparer – Many products and pros can calculate and submit estimated payments for you.

Keep a record of each payment (date, amount, tax year, and which quarter). You will report these on your Form 1040 when you file so the IRS credits them correctly.

Underpayment and penalties

If you do not pay enough during the year, the IRS can charge an underpayment penalty. You can minimize or avoid it by:

• Paying at least 90% of current-year tax or 100%/110% of prior-year tax through withholding and estimated payments.
• Paying each quarter on time so you are not late.
• Using the annualized method if your income is uneven, so you do not overpay early and underpay later.

If you miss a quarter, pay as soon as you can. Catching up reduces the penalty. For details, see IRS Topic No. 306 or ask your preparer.

How this fits with your full-year filing

Estimated payments are not a separate tax. They are prepayments of the income and self-employment tax you will report on your Form 1040 and Schedule C/SE. When you file:

• You report total tax for the year.
• You subtract withholding and estimated payments.
• The result is what you still owe (or your refund).

So good record-keeping during the year—including expense tracking and receipt organization—helps you estimate accurately and avoid surprises in April.

CTA: Stay on top of income and expenses

Accurate quarterly estimates start with knowing your income and deductible expenses. CentSense helps you capture receipts, categorize for Schedule C, and export data so you can update your estimates each quarter. Start free and keep your numbers in one place.

For a full-year checklist, see Freelancer Tax Checklist 2026.

FAQ

Who has to pay quarterly estimated taxes?

Generally, you must pay estimated taxes if you expect to owe at least $1,000 in tax after withholding and credits. Freelancers and self-employed people often owe because they do not have withholding from paychecks.

When are quarterly estimated tax payments due in 2026?

For 2026 income, the four payment deadlines are typically April 15, June 15, September 15, and January 15 of the following year. The IRS or your state may adjust dates if they fall on a weekend or holiday.

How do I avoid underpayment penalties?

Pay at least 90% of the current year tax or 100% (110% for higher income) of the prior year tax through withholding and estimated payments. Paying on time each quarter also helps avoid penalties.

What if I miss a quarterly payment?

Pay as soon as you can. The IRS may charge an underpayment penalty for the period the payment was late. Catching up in the next quarter or at filing time still reduces the penalty compared to not paying.

How do I pay quarterly estimated taxes?

You can pay online via IRS Direct Pay or EFTPS, or mail a check with Form 1040-ES. Many freelancers also pay through their tax software or a tax professional. Keep a record of each payment for your return.

Related reads

• How to File Taxes as a Freelancer
• Freelancer Tax Checklist 2026
• How to Track Business Expenses for Schedule C
• Best Receipt Scanner for Freelancers and 1099 Workers
• Blog · CentSense