Business and Occupation Tax: Rates, Credits and Filing

What the Business and Occupation Tax Means

Washington’s business and occupation tax is a gross receipts tax. It applies to the value of products sold or services performed in the state.

The state charges this tax on business income before expense deductions. A firm cannot subtract rent, wages, supplies, or other business expenses from its taxable receipts.

This point sets the B&O tax apart from an income tax. A business can owe B&O tax even when its profit is low or negative.

The Washington State Department of Revenue, or DOR, collects the state tax. You can review the Department of Revenue’s B&O tax guide for current rules and rate details.

Seattle may also charge a local business tax. The Seattle business and occupation tax is separate from the state tax. Check both tax systems if your business works in Seattle.

• State B&O tax is based on gross receipts.
• Normal business costs do not reduce the tax base.
• State and city taxes can apply to the same business.

How to Calculate Your B&O Tax

Start with the gross income tied to each business activity. Then assign that income to the right B&O tax classification.

Next, multiply the taxable amount by the rate for that class. The basic formula is simple: taxable gross receipts × tax rate = B&O tax due.

For example, suppose a service firm reports $200,000 in taxable receipts. If its rate is 1.5%, its tax before credits is $3,000.

The firm cannot lower that amount by subtracting $80,000 in payroll and rent. Those costs may lower federal income tax, but they do not lower Washington B&O tax.

Some receipts may not belong in the tax base. Exempt activities, deductions allowed by law, and special rules can change the result. Keep clear records for each receipt type.

1. List gross receipts for the reporting period.
2. Separate receipts by business activity.
3. Remove only deductions allowed under Washington law.
4. Apply the rate for each tax class.
5. Subtract valid credits from the tax due.

A mixed business may need more than one calculation. For example, it may sell goods and provide design work. Each stream can use a different rate.

Tax Classes and Rates by Business Activity

Washington has more than 50 B&O tax classifications. Each class covers a defined type of business activity.

Common classes include retailing, wholesaling, manufacturing, and services. Other classes cover such fields as extracting, printing, public utilities, and real estate.

Service firms often face a higher rate than retail or wholesale firms. The exact rate depends on the class and the current tax year.

Do not choose a class based only on your industry name. Choose the class that matches the activity that earned the receipts.

Business activity	Typical tax treatment
Retailing	Tax applies to receipts from retail sales
Wholesaling	Tax applies to qualifying wholesale receipts
Manufacturing	Tax applies to income from making goods
Services	Tax often uses a higher rate than retail or wholesale

Some businesses may report under several classes. A software firm could sell software licenses and offer consulting. Those activities may not share one class.

Use the DOR definitions before filing. A wrong class can cause too little tax, too much tax, or a later correction.

Deductions and Credits That May Lower the Tax

The B&O tax allows only specific deductions. Ordinary business expenses do not count as deductions.

Possible deductions can cover items named in state law. Examples may include certain tax payments, bad debts, or amounts passed through to another party. The rule depends on the receipt and the business activity.

Read each deduction rule before removing an amount. A receipt that feels like a pass-through may still count as gross income.

Tax credits work in a different way. A credit cuts the B&O tax after you calculate the tax due.

Eligible firms may claim a small business tax credit. Other credits may support activities such as hiring, research, or targeted investment. Each credit has its own limits and proof rules.

• Confirm that your business meets the credit rules.
• Keep records that support the claim.
• Check caps, dates, and carryforward rules.
• Enter the credit on the correct excise tax form.

A credit does not turn an expense into a deduction. It also does not remove the need to report gross receipts.

Review current DOR guidance each year. Credit rules and thresholds can change.

How to File and Pay Through MyDOR

Businesses report state B&O tax through the Washington Excise Tax Return. Most filers submit the return through MyDOR, the DOR online system.

Your filing frequency depends on your account. The DOR may assign a monthly, quarterly, or annual filing schedule.

Gather sales records before you start. You will need gross receipts, class totals, deductions, credits, and tax payments.

1. Sign in to your MyDOR account.
2. Open the Excise Tax Return for the right period.
3. Enter receipts under the proper tax classes.
4. Claim only supported deductions and credits.
5. Review the return and submit payment by the due date.

Save the submitted return and payment record. Keep source records for the period required by state rules.

If you missed a deadline, file as soon as possible. Late filing can lead to penalties or interest. Contact the DOR when you need help fixing a return.

Common Questions About B&O Tax

Is the business and occupation tax based on profit?

No. Washington bases this tax on gross receipts. It does not use profit after normal business expenses.

What is the difference between state and Seattle B&O tax?

The state tax goes to Washington through the DOR. Seattle’s local business tax follows city rules and uses its own filing system.

Do all businesses pay the same B&O tax rate?

No. Rates vary by business activity. Service businesses often pay more than retail or wholesale businesses.

Can business expenses reduce B&O tax?

Usually, no. Washington allows only deductions named in law. Rent, wages, and supplies normally remain outside the deduction list.

How do I report B&O tax online?

Use MyDOR to file the Washington Excise Tax Return. Enter receipts by class, apply valid credits, and pay by the assigned due date.

What happens if I use the wrong tax class?

You may pay too much or too little tax. Review the class definitions and correct the return when needed.