Use our easy payroll tax calculator to quickly run payroll in Washington, or look up 2021 state tax rates.
  1. OnPay
  2. Payroll Calculators
  3. Washington Payroll Tax Rates

Free Washington Payroll Tax Calculator and WA Tax Rates

Updated January 13, 2021


Washington grows more apples than any other state in the grand ole’ USofA, and you know what they say: an apple a day keeps the doctor away. Even though you might be healthy as a Macoma clam, we have a feeling your payroll tax-cutting duties are giving you a little bit of a headache. While an apple won’t be able to help you calculate payroll taxes, we can. All you need to do is enter wage and W-4 information for each of your go-getting employees and our calculator will take care of the rest.


You can call us Dr. OnPay, the Washington and Federal payroll tax simplifiers. We’re on call whenever you need us.


See Washington tax rates

Federal Payroll Taxes

For starters, here’s a quick rundown on federal payroll taxes. Before you can start the journey of calculating payroll taxes, you first have to figure out how you’re rewarding your employees for their time (i.e. whether you’re paying them hourly, on a salary, or by another method).


  • If you’re paying them hourly, multiply their hourly rate by the number of hours worked.
  • If you’re paying on a salary, divide the annual salary by the number of pay periods during the year.
  • You should also include bonuses, commissions, and tips in here as well. They are all a part of gross wages.

Once you calculate each employee’s gross wages, it’s time to implement withholdings. There are essentially six main steps you need to consider. We summarize each step below, but if you would like to see more detailed explanations, head on over to our handy step-by-step guide.

  1. Pre-Tax Withholdings…Such as 401(k) or FSA accounts that are exempt from payroll tax. Deduct these withholdings in order to come up with taxable income.
  2. FICA Part 1 – Social Security Tax…Withhold 6.2% of each employee’s taxable income to pay for Social Security Tax, until they’ve earned $142,800 for the year. Any wages above $142,800 are exempt from this tax. As the employer, you also have the pay Social Security Tax. You’ll match the tax that your employees pay dollar-for-dollar.
  3. FICA Part 2 – Medicare Tax…Withhold 1.45% of each employee’s taxable income until they’ve earned $200,000 for the year. Then, instead of higher wages being exempt, the tax rate actually goes up. Any wages above $200,000 would pay what’s called an Additional Medicare Tax of 0.9%. As the employer, you’re only responsible for matching the 1.45% Medicare Tax, not the 0.9% Additional Medicare Tax.
  4. Federal Income Tax…The biggest tax of them all, which can range from 0% all the way to 37%. We won’t go into all the nitty-gritty details here. You can find all the information you need from the IRS Publication 15-T.
  5. FUTA Unemployment Taxes…Your employees sit this one out. Only employers are responsible for paying the FUTA tax. The rate is 6% of the first $7,000 of each employee’s taxable income, which means you won’t pay more than $420 for each employee per year. However, if you pay your FUTA taxes on time and in full each quarter, you can claim a FUTA credit reduction of up to 5.4%. This is a whopping 90% discount, so it’s worth paying attention to your FUTA tax deadlines.
  6. Post-Tax Withholdings…If your employees have court-ordered wage garnishments such as child support or any other post-tax deductions, this is the time to do deduct them. You’ll receive notifications from either the IRS or a judge.


Washington State Payroll Taxes

Now that we’ve gotten federal taxes out of the way, let’s talk about Washington specific payroll taxes. As you are well aware, there are no state or local income taxes in Washington. However, you still have to factor in Unemployment Insurance and Worker’s Compensation Tax.


  • Washington State Unemployment Insurance varies each year. For 2021, the wage base is $56,500. Rates also change on a yearly basis, ranging from 0.11% to 5.40%. These changing rates do not include the social cost tax of 1.22%. New employers use the average experience tax rate of 0.97% for 2021.
  • Workers’ Compensation Tax is a bit more complicated. Tax is calculated at an hourly rate, and a portion of the taxed amount should be withheld from each employee’s paycheck. It’s your responsibility as the employer to pay the remaining taxable amount. Additionally, the Workers’ Compensation Tax is based upon the difficulty of the job being performed. Visit the Department of Labor & Industries website for a complete list of rates.


Payroll call-to-action

Now…Write Those Paychecks!

Now that you have a handle on payroll taxes, all you have to do is pass your knowledge along to your employees in the form of a crisp check. Or if your employees prefer, direct deposits are good, too.


Besides making sure your employees get paid correctly and on time, don’t forget to set aside money for paying employer taxes. Those FICA and FUTA payments can add up if you don’t remit them on a regular basis.


Tax filings are due quarterly by filing Form 941. You also need to use Form 940 to report your annual FUTA tax. Or if you’d rather pay on an ongoing basis, you can use the EFTPS payment system. You can find all the tax filing deadlines on the IRS website.


Additional Washington State Payroll Tax Resources:

If you want to learn even more about Washing State payroll taxes, we’ve listed what we think are the most useful resources here. Check them out.


Register as an Employer with the Department of Revenue: (800) 647-7706


Employer Tax Information with the Employment Security Department: (360) 902-9500


Small Business Guide with the Office for Regulatory Innovation and Assistance (ORIA): (800) 917-0043

Make Payroll a Breeze

OnPay pays your employees and does tax filings for you.