Quarterly Estimated Taxes for Freelancers in 2026

First determine whether payments are expected

Individuals generally look at whether tax owed after withholding and refundable credits will be at least $1,000. If the projected balance is smaller, estimated payments generally are not required. If it is larger, compare the current-year and prior-year methods.

A calculation should include federal income tax, self-employment tax, and Additional Medicare tax when applicable. It also needs all household income reported on the return, not just Schedule C profit. State estimated tax is a separate calculation.

Understand the two common targets

The current-year target is generally 90% of the tax expected on the 2026 return. The prior-year safe harbor is generally 100% of tax shown on the 2025 return when that return covered 12 months.

The prior-year percentage generally rises to 110% when prior-year adjusted gross income exceeded $150,000. For married filing separately, the threshold is $75,000. The smaller applicable target is often the useful planning number, but special rules exist for farmers, fishers, annualized income, and other circumstances.

Withholding has a timing advantage

Federal withholding is generally treated as paid evenly through the year, even when more is withheld late. That can make increased W-2 withholding useful for a freelancer or a spouse correcting an underpayment later in the year. A quarterly check is credited when it is actually paid.

Do not subtract only income-tax withholding from a projection that includes payroll taxes without confirming what the paystub amounts represent. Use federal income-tax withholding and any Additional Medicare withholding that will be credited on the return.

Uneven income needs a different lens

Four equal payments are easy, but freelance income is rarely equal. The annualized income installment method can align required installments with when income was earned. It requires more records and usually Form 2210 support, so large seasonal swings are a good reason to involve a professional.

Review the projection after every quarter, large client win, lost contract, retirement contribution, or major deduction. Keep the payment confirmations with the tax records; a correct calculation without proof of payment does not solve a notice later.

The standard installment dates are not always exactly three months apart, and a weekend or federal holiday can move a due date. Confirm the live calendar on IRS.gov before paying. Direct Pay, EFTPS, and an IRS online account can provide records, but always verify that the payment year and payment type were selected correctly.