Nobody warned me about quarterly taxes my first year freelancing. Tax day rolled around, I owed $8,000, and then the IRS hit me with a $400 penalty on top of that. For not paying throughout the year. Fun times.
Don’t be me. Here’s everything you need to know about quarterly estimated taxes—the system that trips up almost every new freelancer.
What Are Quarterly Estimated Taxes?
When you have a regular job, your employer withholds taxes from each paycheck. But as a freelancer or gig worker? No one withholds anything. You get paid in full.
The IRS doesn’t like waiting until April for their money. So if you expect to owe $1,000 or more in taxes, they want you to pay throughout the year in four installments. That’s quarterly estimated taxes.
2025 Quarterly Tax Deadlines
| Quarter | Income Earned | Payment Due |
|---|---|---|
| Q1 | January 1 – March 31 | April 15, 2025 |
| Q2 | April 1 – May 31 | June 16, 2025 |
| Q3 | June 1 – August 31 | September 15, 2025 |
| Q4 | September 1 – December 31 | January 15, 2026 |
Notice the quarters aren’t equal lengths. Yeah, it’s weird. Just mark these dates in your calendar.
How to Calculate Your Quarterly Payment
Here’s the simple formula I use:
- Estimate your annual net profit (income minus expenses)
- Calculate self-employment tax: Net profit × 15.3%
- Estimate income tax based on your bracket
- Add them together
- Divide by 4
Example Calculation:
Expected annual profit: $50,000
- Self-employment tax: $50,000 × 15.3% = $7,650
- Federal income tax (22% bracket estimate): $50,000 × 22% = $11,000
- Total annual tax: $18,650
- Quarterly payment: $18,650 ÷ 4 = $4,662.50
Pro tip: Just save 25-30% of every payment you receive. Then use that savings for quarterly payments. Simple.
How to Actually Pay
Several options:
1. IRS Direct Pay (Easiest)
Go to irs.gov/payments, select “Estimated Tax,” enter your info, pay with bank account. Free and takes 5 minutes.
2. EFTPS (Electronic Federal Tax Payment System)
Requires enrollment, but lets you schedule payments in advance. Good if you want to automate.
3. Credit/Debit Card
Works, but they charge processing fees (1.87% for debit, ~2% for credit). Usually not worth it unless you’re getting rewards that offset the fee.
4. Mail a Check
Old school. Send check with Form 1040-ES voucher to the IRS. Slow and easy to mess up.
What If You Don’t Pay Quarterly?
Two things happen:
- Underpayment penalty: Currently around 8% annually on what you should have paid
- Big tax bill in April: The full amount comes due at once
The penalty isn’t huge, but it’s annoying and completely avoidable. Plus, that April surprise can wreck your finances if you’re not prepared.
The Safe Harbor Rule
Here’s a hack: The IRS won’t penalize you if you pay either:
- 90% of this year’s tax through quarterly payments, OR
- 100% of last year’s tax (110% if income was over $150k)
So if you paid $10,000 in taxes last year, paying $2,500 per quarter ($10,000 total) keeps you safe from penalties—even if you actually owe more this year. You’ll still owe the difference in April, but no penalty.
What About State Taxes?
Most states also require quarterly payments if you have self-employment income. Check your state’s department of revenue website for deadlines and payment methods.
The nine states with no income tax (Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, Wyoming) are the exception.
My Quarterly Tax System
Here’s exactly what I do:
- Every time I get paid, I transfer 30% to a separate savings account
- One week before each quarterly deadline, I log into IRS Direct Pay
- I pay roughly 1/4 of what I expect to owe for the year
- I keep a small buffer in the savings account for April adjustments
Takes about 10 minutes per quarter. No surprises.
Frequently Asked Questions
What if my income varies a lot?
Pay based on what you’ve actually earned each quarter. The IRS allows the “annualized income installment method” for variable income. Or just estimate conservatively and get a refund.
What if I can’t afford to pay?
Pay what you can. Some payment is better than none. You can also request a payment plan from the IRS for the remainder.
Do I need to file anything with quarterly payments?
No forms required when you pay electronically. Just make the payment. You’ll reconcile everything on your annual return.
What if this is my first year freelancing?
You won’t have a penalty for the first year if you had no tax liability last year. But you should still pay quarterly to avoid a huge April bill.
Start Now
If you’re not making quarterly payments, start this quarter. Set up that separate savings account, start putting away 25-30% of income, and pay on time.
Future you will be grateful when April 15th is just another day, not a financial emergency.