Washington Quarterly Tax Calculator
Calculate your estimated quarterly tax payments for federal taxes. Designed for self-employed individuals, freelancers, and independent contractors.
WA State Tax: No State Income Tax
Quarterly Payment Amount
$5,593
Per quarter (4 remaining)
Annual Tax Breakdown
2026 Payment Schedule
Jan 1 - Mar 31
Due: April 15, 2026
$5,593
Apr 1 - May 31
Due: June 15, 2026
$5,593
Jun 1 - Aug 31
Due: September 15, 2026
$5,593
Sep 1 - Dec 31
Due: January 15, 2027
$5,593
Don't miss your quarterly payments!
The IRS may charge penalties and interest if you underpay or pay late. Consider setting up automatic payments or calendar reminders.
Washington Quarterly Tax Highlights
Washington has NO state income tax
7% tax on capital gains over $250,000 (not earned income)
Only federal taxes apply to self-employment income
Washington Quarterly Tax FAQ
Does Washington have state income tax?
Washington has no state income tax on wages or self-employment income. There is a 7% tax on capital gains over $250,000, but this doesn't apply to earned income from self-employment.
Washington Estimated Quarterly Tax Payments for Self-Employed Workers in 2026
Washington does not impose a state income tax, making it one of the most tax-friendly states for self-employed workers, freelancers, and independent contractors. However, Washington residents still must pay federal income tax and self-employment tax on their net earnings. If you expect to owe $1,000 or more in federal taxes for 2026, you are required to make quarterly estimated tax payments to the IRS using Form 1040-ES.
Washington has no income tax on wages or self-employment income. However, the state enacted a 7% tax on long-term capital gains exceeding $250,000 (upheld by the state Supreme Court in 2023). This does not apply to earned income from self-employment. Washington generates revenue through sales tax (6.5% state, up to 10.4% with local) and a Business & Occupation (B&O) tax that may apply to self-employed workers.
| Tax Layer | Rate / Range | Filed With | Form |
|---|---|---|---|
| Federal income tax | 10% – 37% | IRS | 1040-ES |
| Self-employment tax | 15.3% | IRS | 1040-ES / SE |
| Washington state income tax | None | N/A | N/A |
How Washington's Zero Income Tax Affects Your Quarterly Payments
Because Washington has no state income tax, your quarterly estimated tax obligation consists entirely of federal income tax and self-employment tax. This simplifies your calculations — you only need to file one set of quarterly payments with the IRS rather than splitting between state and federal agencies.
For a single self-employed worker in Washington earning $100,000 in net self-employment income, the estimated annual federal obligation would be approximately:
| Tax Component | Estimated Amount | Calculation Basis |
|---|---|---|
| Federal income tax | ~$11,600 | After $15,700 standard deduction, using 2026 brackets |
| Self-employment tax | ~$14,130 | 15.3% on 92.35% of net earnings |
| Total annual tax | ~$25,730 | |
| Quarterly payment | ~$6,433 | Total / 4 quarters |
Compared to states with income taxes, Washington residents keep significantly more of their self-employment earnings. For example, a freelancer earning $100,000 in California would owe an additional ~$5,580 in state income tax on top of the federal amounts above.
Federal Self-Employment Tax and Quarterly Due Dates
All self-employed workers — regardless of which state they live in — must pay federal self-employment (SE) tax of 15.3% on 92.35% of net earnings. This breaks down into 12.4% for Social Security (on earnings up to $184,500 in 2026) and 2.9% for Medicare (no cap). An additional 0.9% Medicare surtax applies to earnings above $200,000 (single filers).
Quarterly estimated tax payments are due on the following dates for tax year 2026:
| Quarter | Income Period | Due Date |
|---|---|---|
| Q1 | January 1 – March 31 | April 15, 2026 |
| Q2 | April 1 – May 31 | June 15, 2026 |
| Q3 | June 1 – August 31 | September 15, 2026 |
| Q4 | September 1 – December 31 | January 15, 2027 |
To avoid underpayment penalties, pay at least 100% of your prior-year tax liability (or 110% if your AGI exceeds $150,000) spread across four equal payments, or at least 90% of your current-year tax. You can deduct 50% of your self-employment tax from your adjusted gross income on your federal return, reducing your overall income tax.
Related Calculators
Official References
This calculator uses current federal and Washington tax rates and schedules:
- IRS Estimated Tax Guidelines
Federal quarterly tax requirements and Form 1040-ES
- Washington DOR
Washington tax authority (no income tax)
- IRS Self-Employment Tax
Social Security and Medicare tax information
This calculator provides estimates based on 2026 tax rates. Your actual tax liability may vary based on deductions, credits, and other factors. Consult a tax professional for personalized advice.