How Quarterly Estimated Taxes Work for Freelancers: Deadlines, Amounts and Penalties

When you work for yourself, nobody withholds income tax from your payments. The IRS expects you to pay as you earn, in four installments called estimated taxes. Miss them and you can owe a penalty even if you pay the full bill in April. This guide explains who has to pay, when, how much, and how to stay out of trouble.

Who has to pay estimated taxes

You generally must make estimated payments if you expect to owe at least $1,000 in federal tax for the year after subtracting withholding and credits. That covers most freelancers, contractors, gig workers and small business owners with meaningful profit. If you also have a job with a paycheck, you can often avoid estimated payments by increasing your withholding with a new Form W-4 instead.

The four due dates

The quarters are not equal. Each payment covers a specific income period, and the dates for the 2026 tax year are:

When a date falls on a weekend or federal holiday, the deadline moves to the next business day. Your state may have its own dates and rules.

How to calculate each payment

The IRS provides Form 1040-ES with a worksheet. The logic is simple:

1. Estimate your net profit for the year: income minus business expenses.
2. Calculate self-employment tax, which is about 15.3% of 92.35% of your net profit.
3. Subtract half of that self-employment tax and your standard (or itemized) deduction, plus any qualified business income deduction, to find taxable income.
4. Apply the federal income tax brackets to that figure and add the self-employment tax.
5. Divide the total by four, or by the number of payments you have left.

Example: with $60,000 of net profit, self-employment tax is about $8,478 ($60,000 x 0.9235 x 0.153). Add income tax and the yearly total is a little over $12,000, so each payment is roughly $3,000.

The safe harbor rule

You do not have to predict your income perfectly. You avoid the underpayment penalty if your payments during the year add up to at least the smaller of:

• 90% of this year's tax, or
• 100% of last year's total tax (110% if last year's adjusted gross income was above $150,000).

The prior-year method is popular with freelancers whose income is rising, because the target is known in January. The trade-off is that you may owe a larger balance in April if you have a great year.

How to pay

• IRS Direct Pay: free, from your bank account, no registration needed.
• IRS online account: lets you schedule payments and see your history.
• EFTPS: the Electronic Federal Tax Payment System, free but requires enrollment.
• Card or digital wallet: available through approved processors, which charge a fee.

Select the correct tax type (Form 1040-ES estimated tax) and tax year when you pay, and keep the confirmation number.

What if your income is uneven

If you earn most of your money late in the year, equal quarterly payments may overstate what you owed early on. The annualized income installment method, reported on Form 2210, lets you match payments to when you actually earned the money and can reduce or remove a penalty.

What the penalty is

The underpayment penalty is interest on the amount you should have paid, charged for the days it was late, at a rate the IRS sets each quarter. It is not huge for small shortfalls, but it is entirely avoidable.

Frequently asked questions

Do I pay state estimated taxes too?

Most states with an income tax have their own estimated tax system. Check your state revenue department.

Can I just pay everything in April?

You can, but you may owe a penalty for the months the money was due and unpaid.

What if I overpay?

You can apply the refund to next year's estimated payments or take it as a refund when you file.