First quarterly estimated tax payment for self-employed and high-earning individuals.
Estimated tax payments are required when you receive income not subject to withholding (self-employment income, investment income, rental income). The IRS requires four quarterly payments spread throughout the year to avoid penalties and interest.
The Q1 payment covers January–March income. You may want to pay 25% of your estimated annual tax liability by April 15. This payment is in addition to (or instead of) your regular Tax Day return filing.
Self-employed individuals, freelancers, independent contractors, and business owners are most commonly required to make quarterly estimated payments. Additionally, if you have significant investment income (capital gains, dividends, interest), you may owe quarterly taxes.
To calculate estimated tax, use Form 1040-ES or an online calculator. It's a two-step process: estimate total income for the year, then calculate the expected tax liability. Divide by four to get each quarterly payment.
The IRS imposes penalties if estimated tax payments fall below a threshold (typically 90% of current year tax or 100% of prior year tax). To avoid penalties, pay close to your actual expected tax, or use the safe harbor rules.
Underpaying estimated taxes results in:
- Underpayment penalty: Charged quarterly; the IRS calculates interest at prime rate + 3%
- Interest: Compounds quarterly until tax is paid in full
- Larger balance owed at year-end (April 15 of next year)
- Complexity and stress from unexpected tax bills
- Potential cash flow problems if you don't set aside money during the year
Add this deadline to your phone, calendar, or reminder app 2–3 weeks in advance to avoid last-minute stress.