Quarterly taxes for US freelancers, in plain English

The first time most US freelancers hear about quarterly taxes, it is from a panicked friend in March. The conversation goes something like, "wait, you have to pay taxes four times a year?" Yes. Sort of. Here is what is actually going on, and what to do about it.

This is general information, not tax advice. The numbers and rules below are accurate as of the 2026 tax year. Talk to an accountant before you make decisions that matter.

Why quarterly taxes exist

When you work a normal W2 job, your employer withholds taxes from every paycheck and sends them to the IRS on your behalf. You do not feel it because it never lands in your account.

When you are self employed, nobody is doing that for you. But the IRS still expects to be paid throughout the year, not in one giant April lump. So they ask you to estimate what you will owe and send it in four installments.

Miss the installments and you can owe penalties and interest, even if you pay the full amount in April. The penalties are not huge for most people, but they are annoying and avoidable.

Who owes them

You generally owe quarterly estimated taxes if you expect to owe at least one thousand dollars in federal tax for the year and you do not have enough withheld from other sources to cover it.

In practice, almost every full time freelancer owes them. Most part time freelancers with a W2 day job do not, because the W2 withholding usually covers everything.

Your state may have its own quarterly tax system on top of the federal one. California, New York, and several others do. Check yours.

What you are actually paying

The estimated payment is not just income tax. It is two things stacked on top of each other.

1. Self employment tax, which is 15.3 percent of your net earnings up to a Social Security wage cap (160,200 dollars in 2023, rising each year), then 2.9 percent above that. This is the part W2 employees split with their employer. As a freelancer, you owe both halves.
2. Federal income tax, which is calculated on a progressive scale based on your total taxable income, with brackets that start at 10 percent and top out at 37 percent.

A reasonable planning shortcut: set aside 25 to 30 percent of every dollar you invoice for federal taxes. Higher earners or higher tax states should plan closer to 35 percent. This is a planning rule, not the actual calculation, but it keeps you in the right neighborhood.

When they are due

The federal due dates for the 2026 tax year are:

1. Q1: April 15, 2026 (covers income earned January through March).
2. Q2: June 15, 2026 (covers April and May).
3. Q3: September 15, 2026 (covers June through August).
4. Q4: January 15, 2027 (covers September through December).

Yes, the quarters are uneven. No, nobody knows why. Just put the dates in your calendar.

State quarterly dates usually mirror the federal ones but check your state.

How to calculate what to send

There are two common methods. The safe harbor method and the actual estimate method. Most freelancers should use the safe harbor.

Safe harbor. Pay at least 100 percent of last year's total federal tax liability, spread across the four quarters. If you earned more than 150,000 dollars in adjusted gross income last year, that becomes 110 percent.

This is the simplest approach because it does not require you to predict this year's income. As long as you hit the safe harbor number, you cannot be penalized for underpayment, even if you end up owing more in April.

Actual estimate. Estimate your full year income, deductions, and credits, calculate the tax owed, and divide by four. More accurate if your income is steady, but requires you to keep redoing the math as the year goes on.

Most freelancers should default to safe harbor, then catch up with the difference in April. It is less stressful and the cost (if any) is small.

How to actually pay

You have three options:

1. IRS Direct Pay (free, easy, recommended). Go to irs.gov, pick "Estimated Tax" as the reason, and submit a bank transfer.
2. EFTPS, the IRS electronic federal tax payment system. More setup required, but useful if you make a lot of payments.
3. Mail a check with Form 1040-ES. Fine if you like paper. Slower and more error prone.

Pay your state through whatever portal your state uses. California has FTB Web Pay. New York has its own portal. Each state is its own little adventure.

Save the confirmation numbers somewhere you can find them at tax time. Your accountant will ask.

What if you forgot

Most freelancers miss a quarter at some point. The penalty is calculated based on how much you underpaid and how long you went without paying. For most small misses, you are looking at tens of dollars, not thousands.

The fix is simple: pay the missed quarter as soon as you remember. Then resume the regular schedule. The penalty calculation will be sorted out at tax time, and you will likely barely notice it.

The bigger risk is forgetting and then also not setting aside money. That is how freelancers end up with a four or five figure tax bill they have no cash to cover. Which brings us to the most important habit.

The savings account

The single most useful financial habit a freelancer can build is the tax savings account.

Open a separate high yield savings account. Every time a client pays you, move 25 to 30 percent of the deposit to that account. Do not touch it for anything other than taxes.

When the quarterly due date arrives, transfer from the tax account to the IRS. When April comes and you owe more, the money is already there. When April comes and you owe less, the leftover money is a small bonus.

The account does two things. First, the math: the money is set aside so you cannot accidentally spend it. Second, the psychology: tax payments stop feeling like surprises. They are just transfers from one of your accounts to one of the IRS's.

If you do nothing else from this article, do the savings account. It will solve 80 percent of the problem.

A note on deductions

Quarterly taxes are the cousin you cannot avoid. Deductions are the cousin who can save you real money but only if you keep records.

Track everything that might be a business expense: software, subscriptions, home office, mileage, professional development, meals with clients, hardware, and the percentage of your phone bill that is business use. A simple bookkeeping tool (FreshBooks, QuickBooks Self Employed, Wave) plus a separate business checking account makes this almost automatic.

The best time to start tracking deductions was when you got your first freelance check. The second best time is today.

The big picture

US tax law is intimidating but the freelancer version is not as bad as it looks. Set aside 25 to 30 percent of every dollar in a tax account. Pay four times a year using the safe harbor calculation. Track your deductions. Hire an accountant once you cross about 75,000 dollars of self employment income.

That is most of what you need to know to stay out of trouble. The rest is detail your accountant can sort out for you, and the cost of the accountant will more than pay for itself the first year.