How quarterly taxes work for freelancers
If you earn money through freelancing, consulting, or contract work, you are responsible for paying taxes on that income. The IRS operates on a "pay-as-you-go" system, which means they expect you to make estimated tax payments four times per year rather than waiting until April.
Why quarterly payments exist
W-2 employees have taxes withheld from every paycheck automatically by their employer. As a freelancer, you are classified as self-employed under IRS guidelines, which means you handle both the employee and employer portions of payroll taxes yourself. The quarterly system ensures the government collects revenue throughout the year.
The three taxes you owe
Your quarterly tax payment covers three distinct obligations:
- Federal income tax: Based on your taxable income after deductions. The 2026 tax brackets range from 10% to 37% depending on your income level. See IRS federal income tax rates for current brackets.
- Self-employment (SE) tax: A flat 15.3% that funds Social Security (12.4%) and Medicare (2.9%). This is calculated on 92.35% of your net self-employment income per IRS Publication 15. The Social Security portion caps at $168,600 for 2024.
- State income tax: Varies by state. Nine states (Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, Wyoming) have no income tax. California tops out at 13.3%. Check your state's tax rates.
The $1,000 rule
According to IRS guidelines on estimated taxes, you must make quarterly payments if you expect to owe $1,000 or more in tax when you file your return. If you owe less, you can pay everything at tax time without penalty.
Penalty for underpayment
The IRS charges an underpayment penalty if you do not pay enough throughout the year. The penalty is calculated as interest on the amount you should have paid, from when it was due until when you actually paid. For 2024, the underpayment interest rate is 8% annually. Even if you pay everything by April 15, you will still owe the penalty for late quarterly payments.
2026 quarterly tax due dates
Quarterly taxes follow a staggered schedule that does not align perfectly with calendar quarters. The IRS sets specific deadlines each year. Mark these dates:
| Income earned | Payment due | IRS Form |
|---|---|---|
| January 1 – March 31 | April 15, 2026 | 1040-ES (Q1) |
| April 1 – May 31 | June 16, 2026 | 1040-ES (Q2) |
| June 1 – August 31 | September 15, 2026 | 1040-ES (Q3) |
| September 1 – December 31 | January 15, 2027 | 1040-ES (Q4) |
If a due date falls on a weekend or federal holiday, the deadline moves to the next business day. June 15, 2026 falls on a Sunday, so Q2 is due June 16.
How to make payments
The IRS accepts payments through several methods:
- IRS Direct Pay: Free, instant bank transfer. No registration required.
- EFTPS: Electronic Federal Tax Payment System. Requires registration but allows scheduled payments.
- Credit/debit card: Through IRS-approved processors. Processing fees apply (1.85-1.98% for credit cards).
- Mail: Send a check with Form 1040-ES voucher to the address for your state listed in the 1040-ES instructions.
For state taxes, check your state's department of revenue website. Most states offer free online payment options similar to IRS Direct Pay.
Self-employment tax formula explained
Self-employment tax is the self-employed person's equivalent of FICA taxes (Social Security and Medicare), which W-2 employees split with their employer. As a freelancer, you pay both halves.
The calculation
The formula prescribed by IRS Publication 334 is:
- Net self-employment income: Your gross business income minus business expenses
- Taxable SE income: Net income × 92.35% (this accounts for the employer-equivalent portion)
- SE tax: Taxable SE income × 15.3%
Example: If your net freelance income is $100,000:
- Taxable SE income: $100,000 × 0.9235 = $92,350
- SE tax: $92,350 × 0.153 = $14,129.55
The 15.3% breakdown
- Social Security: 12.4% on income up to $168,600 (2024 wage base limit, adjusted annually for inflation)
- Medicare: 2.9% on all income with no cap
- Additional Medicare: 0.9% on income over $200,000 (single) or $250,000 (married filing jointly)
The SE tax deduction
You can deduct 50% of your self-employment tax when calculating your adjusted gross income. This is taken on Schedule 1, not Schedule C. In the example above, you would deduct $7,064.78 from your taxable income, reducing your income tax liability.
Common deductions freelancers miss
Business expenses reduce your taxable income, which reduces both your income tax and self-employment tax. Many freelancers leave money on the table by not tracking deductions they qualify for.
Home office deduction
If you use part of your home exclusively and regularly for business, you can deduct a portion of your housing costs. Two methods exist:
- Simplified method: $5 per square foot, up to 300 sq ft ($1,500 max). Easy to calculate, no record-keeping required.
- Regular method: Calculate the percentage of your home used for business and apply that to total housing costs (rent/mortgage interest, utilities, insurance, repairs). Requires detailed records.
See IRS home office deduction guidelines for qualification requirements.
Business expenses (Schedule C)
Common deductible expenses include:
- Software and subscriptions: Design tools, project management, cloud storage, accounting software, domain registrations
- Equipment: Computers, monitors, cameras, microphones. Items over $2,500 may need to be depreciated unless you elect Section 179
- Professional services: Accounting, legal, consulting fees
- Education: Courses, certifications, and books that maintain or improve skills in your current field
- Travel: Business travel, mileage (67 cents/mile for 2024), parking, tolls
- Insurance: Business liability, professional liability (E&O), equipment insurance
Health insurance deduction
If you are self-employed and pay for your own health insurance, you can deduct 100% of premiums for yourself, spouse, and dependents. This is taken on Schedule 1, not Schedule C, and is not subject to the 7.5% AGI floor that applies to itemized medical deductions.
Retirement contributions
Contributions to self-employed retirement plans reduce your taxable income:
- SEP-IRA: Up to 25% of net self-employment income, max $69,000 (2024)
- Solo 401(k): Up to $23,000 employee contribution + 25% employer contribution, max $69,000 (2024)
- Traditional IRA: Up to $7,000 ($8,000 if 50+)
