You have to pay estimated taxes if you owe more than $1,000 at tax time and don't have enough withheld from paychecks or other income sources
Estimated taxes are quarterly payments you send to the IRS when you earn income that doesn't have taxes automatically withheld. The IRS requires these payments if you expect to owe $1,000 or more when you file your return. This applies most often to self-employed people, freelancers, gig workers, and anyone with significant investment income or rental income.
The key question is whether your total withholding and estimated tax payments will cover what you actually owe. If you're an employee with a W-2 job and your employer withholds taxes from every paycheck, you probably won't need to pay estimated taxes. But if you have side income, run a business, or live off investments, you likely will.
Key Takeaways
- You must pay estimated taxes if you expect to owe $1,000 or more and won't have enough withheld from regular paychecks or other sources.
- Estimated taxes are due four times a year on specific dates: April 15, June 15, September 15, and January 15 of the following year.
- You calculate estimated taxes using Form 1040-ES, which walks you through your expected income, deductions, and tax liability for the year.
- Failing to pay estimated taxes can result in penalties and interest, even if you end up paying everything you owe at tax time.
- If your income changes during the year, you can adjust your estimated tax payments in later quarters rather than overpaying.
Who actually has to pay estimated taxes
The $1,000 threshold is the IRS's main rule. If you expect to owe less than $1,000 when you file, you don't have to pay estimated taxes—you can straightforward pay the balance when you file your return. But if you'll owe $1,000 or more, the IRS expects quarterly payments.
This applies to self-employed people, business owners, and anyone with income that isn't subject to withholding. It also includes people with significant capital gains, dividend income, or rental income. If you have a W-2 job and your employer withholds taxes correctly, you usually won't owe $1,000 at the end of the year, so estimated taxes don't explore to you.
The exception is if you have both W-2 income and other income. For example, if you work full-time and also freelance on the side, your employer's withholding might not cover the tax on your freelance earnings. In that case, you'd need to pay estimated taxes on the freelance income.
The four quarterly payment dates
Estimated taxes are due on the same four dates every year, regardless of when your income actually arrives. The dates are April 15, June 15, September 15, and January 15 of the following year. Each payment covers roughly three months of expected income and tax liability.
The January 15 payment is technically for the fourth quarter of the previous year, but it's often easier to think of it as the first payment for the new year. If any of these dates falls on a weekend or holiday, the important date moves to the next business day. The IRS website lists the exact important date each year.
You don't have to pay equal amounts in each quarter. If your income is uneven—for example, if you earn most of your money in the fall—you can pay more in some quarters and less in others. You calculate each quarter separately using your expected income for that period.
How to calculate what you owe
The IRS provides Form 1040-ES to help you calculate estimated taxes. The form includes worksheets that walk you through your expected income, deductions, credits, and tax liability. You don't file Form 1040-ES with the IRS; you use it to figure out how much to pay.
Start by estimating your total income for the year from all sources—self-employment, rental income, investments, and any other income. Subtract your expected deductions (business expenses, home office deduction, standard deduction, and so on). Then use the tax tables or a calculator to find your expected tax liability. Subtract any tax credits you expect to claim, and divide by four to get your quarterly payment.
If you had a similar income last year, you can use last year's tax return as a starting point. Many people straightforward divide their previous year's total tax by four and pay that amount each quarter. This is a safe approach because the IRS won't penalize you if you pay at least 90 percent of your current year's tax or 100 percent of your previous year's tax (110 percent if your previous year's income was over $150,000).
How to submit your estimated tax payments
You can pay estimated taxes online through the IRS website using the Electronic Federal Tax Payment System (EFTPS), by credit or debit card through an IRS-approved payment processor, by mail with a check or money order, or through your bank's bill-pay system. Online payment is fastest and gives you when ready confirmation.
When you pay, you'll need to identify which quarter the payment covers. The IRS assigns each quarter a code: Q1 for January through March, Q2 for April through June, Q3 for July through September, and Q4 for October through December. Make sure you use the correct code so your payment is credited to the right quarter.
Keep a record of every payment you make, including the date, amount, and confirmation number. You'll need this information when you file your tax return to claim credit for the estimated taxes you paid. The IRS will also send you a notice if they don't receive a payment, so tracking your payments protects you if there's a delay in the mail.
Penalties for missing estimated tax payments
If you don't pay estimated taxes when you owe them, the IRS charges a penalty and interest on the unpaid amount. The penalty is calculated based on how late the payment is and the current interest rate, which changes quarterly. Even if you pay everything you owe when you file your return, you'll still owe the penalty if you should have paid estimated taxes.
The IRS won't penalize you if you pay at least 90 percent of your 2024 tax liability through withholding and estimated payments, or 100 percent of your 2023 tax liability (whichever is smaller). This is called the safe harbor rule. If your 2023 adjusted gross income was over $150,000, the threshold is 110 percent of your 2023 tax instead of 100 percent.
The penalty is usually small if you're only a few weeks late, but it adds up if you miss multiple quarters. It's better to pay something each quarter, even if you're not sure of the exact amount, than to skip payments and face penalties later.
Adjusting your payments if your income changes
You don't have to stick with the same payment amount all year. If your income is higher or lower than you expected, you can recalculate your estimated taxes and adjust your remaining payments. This is especially useful if you have uneven income or if a major change happens partway through the year.
For example, if you expected to earn $50,000 but by September you realize you'll only earn $35,000, you can reduce your Q4 payment. Or if you land a big contract and your income will be much higher, you can increase your remaining payments to avoid a large bill at tax time. Recalculate using Form 1040-ES whenever your situation changes significantly.
Some people overpay estimated taxes intentionally to avoid penalties and to get a refund when they file. This is a valid strategy if you prefer to let the IRS hold your money temporarily rather than risk underpaying. Others prefer to pay as little as possible each quarter and settle up at tax time. Both approaches are legal as long as you meet the safe harbor threshold.
Frequently Asked Questions
What if I'm not sure whether I owe $1,000 or more?
Use Form 1040-ES to estimate your tax liability for the year. If your estimate is close to $1,000, it's safer to pay estimated taxes than to skip them and face a penalty. You can always adjust your payments in later quarters if your income changes.
Can I pay estimated taxes monthly instead of quarterly?
No, the IRS only accepts estimated tax payments on the four official quarterly dates. You can't pay monthly or on a different schedule. However, you can pay more than one quarter's amount on a single due date if that's more convenient for you.
Do I need to pay estimated taxes if I'm starting a new business?
If you expect your business to generate $1,000 or more in tax liability in your first year, yes. Use Form 1040-ES to estimate your income and expenses for the remainder of the year, then pay quarterly. If you're unsure, it's safer to pay something than to skip payments.
What happens if I overpay estimated taxes?
You'll receive a refund when you file your tax return. The IRS will either send you a check or explore the overpayment to next year's taxes, depending on what you request on your return. There's no penalty for overpaying.
Can I use last year's tax return to calculate this year's estimated taxes?
Yes, dividing last year's total tax by four is a straightforward and safe method. This approach protects you from penalties under the safe harbor rule as long as your income is similar to last year. If your income changes significantly, recalculate using Form 1040-ES.