If you earn income in the United States, you’re expected to pay taxes throughout the year, not just when you file your income tax return.
For W-2 employees, this happens automatically through payroll withholding. But for freelancers, contractors, and small business owners, taxes are your responsibility. That’s where quarterly estimated taxes come in.
Failing to pay accurate quarterly estimated taxes can lead to IRS penalties, interest, and/or a large unexpected tax bill when you file your annual tax return. This guide explains how quarterly estimated taxes work, who needs to pay them, and how to plan ahead with confidence.
What are quarterly estimated taxes?
Quarterly estimated taxes are IRS-required, pay-as-you-go tax payments made four times a year. Instead of paying all your federal taxes at once, you estimate what you’ll owe and submit payments throughout the year.
These payments typically cover:
- Federal income tax
- Self-employment tax
- Employment taxes (if you have employees)
- Other applicable federal taxes
The goal is simple: keep you current with the IRS as you earn income.
Who needs to pay quarterly estimated taxes?
You generally need to pay quarterly estimated taxes if:
- You’re self-employed, a freelancer, or an independent contractor
- You own a small business or sole proprietorship
- You expect to owe $1,000 or more in federal taxes for the year
- If taxes aren’t being withheld from your income, quarterly estimated payments help you avoid penalties and stay compliant.
Who should pay estimated tax payments?
Small businesses, freelancers, sole proprietors, and anyone expecting to owe more than $1,000 in federal taxes in the current year should calculate and pay estimated quarterly taxes.
If you or your business will owe at least $1,000 in income tax for the year, it’s recommended that you pay estimated quarterly taxes. To avoid penalties or unwelcome surprises at tax time, it’s a good idea to calculate your estimated tax payments and make these quarterly payments to protect yourself.
What taxes are included in quarterly estimated taxes?
The exact taxes you owe depend on your business structure, income, and location, but may include:
Income tax
Most individuals and businesses pay federal income tax based on earnings.
Self-employment tax
Self-employed individuals pay both the employer and employee portions of Social Security and Medicare (15.3%), with half deductible at filing time.
Employment taxes
If you have employees, you’re responsible for withholding and remitting payroll-related taxes.
Sales tax
Collected from customers and paid to state or local agencies (not the IRS).
Excise taxes
Industry-specific taxes that apply to certain products or activities.
How are quarterly estimated taxes calculated?
Quarterly estimated taxes are calculated using IRS Form 1040-ES. The process generally includes:
1. Estimate your annual income
Project your total earnings for the year.
2. Apply deductions and credits
Choose between the standard deduction or itemized deductions, plus eligible business deductions such as:
- Home office
- Business travel
- Internet and phone
- Advertising
- Insurance
- Retirement contributions
3. Add self-employment tax (if applicable)
Self-employed individuals calculate tax on 92.35% of net income and apply the 15.3% rate (up to the annual limit).
4. Determine your total tax liability
Divide the total amount owed into four equal quarterly payments.
Rules for quarterly estimated taxes
If your income fluctuates or estimating feels overwhelming, the IRS offers safe harbor rules to help you avoid penalties:
Pay 90% of the current year’s tax
Pay 100% of last year’s tax (110% for higher-income earners)
Use the annualized income method for seasonal or uneven income
Safe harbor protects you from penalties, even if your estimate isn’t perfect.
When are quarterly estimated taxes due?
Quarterly estimated taxes are typically due on:
- April 15
- June 15
- September 15
- January 15 (of the following year)
If a due date falls on a weekend or holiday, payment is due the next business day.
How to plan for quarterly estimated taxes
The best way to manage quarterly estimated taxes is to plan ahead.
Monthly saving method
Divide your annual tax estimate by 12 and set aside money each month.
Percentage method
Set aside a fixed percentage of every payment you receive (for example, 20–30%).
Keeping tax funds separate helps avoid cash flow surprises when payments are due.
How to pay quarterly estimated taxes
You can pay quarterly estimated taxes by:
- Mailing IRS Form 1040-ES payment vouchers
- Paying online through IRS Direct Pay or EFTPS
Stay organized year-round with BILL
Tracking income, expenses, and payments throughout the year makes quarterly estimated taxes easier and less stressful.
BILL helps businesses centralize payments, automate workflows, and maintain accurate financial records, so you’re better prepared every quarter and at tax time.
BILL makes it easy to track all of your business expenses and payments in one seamless platform.
State and local tax requirements vary, so it’s best to consult a tax professional for guidance.
Disclaimer: This content is for informational purposes only and does not constitute tax advice. Please consult your CPA or tax advisor for guidance specific to your situation.
