A CPA for Tualatin businesses and residents
Tualatin is a working city. Its own economic development team lists advanced manufacturing, information technology, health services, corporate and business services, and distribution and online sales as its key industries. That mix shows up in the tax work: payroll, inventory, multi state sales, and owners who need their business and personal returns to line up.
The city was incorporated in 1913 and sits in two counties, Washington and Clackamas. For most residents the county line does not change their income tax, because neither county has the Multnomah County Preschool for All tax for residents. What your CPA checks instead is whether your home sits inside the Metro boundary and where your income is earned.
Our office is at 515 NW Saltzman Rd in Portland. We do not have an office in Tualatin. Most clients work with their CPA online, and meetings are arranged when needed.
Business tax for Tualatin manufacturers and distributors
A manufacturer or distributor in Tualatin can cross the Oregon Corporate Activity Tax line well before profit feels large, because the CAT is figured on Oregon commercial activity rather than profit. Registration is required within 30 days of reaching $750,000, and businesses over $1 million file and pay. The tax is $250 plus 0.57% of taxable Oregon commercial activity above $1 million.
Larger companies also need to look at the Metro Supportive Housing Services business income tax. Tualatin is one of the 24 cities Metro serves. Partnerships, LLCs and corporations with more than $5 million in gross receipts, counted everywhere, owe 1% of the profit apportioned to the Metro district. Sole proprietors are not subject to it.
Your CPA can prepare your federal and Oregon business returns, these local filings, and the apportionment work that comes with selling into other states.
What we help people in Tualatin with
- Federal and Oregon business returns
- Oregon Corporate Activity Tax registration and returns
- Metro SHS business and personal tax filings
- TriMet and statewide transit tax review
- Paid Leave Oregon payroll setup
- Bookkeeping and monthly reporting
- Personal returns, including RSU and ESPP income
- LLC and S corp tax planning
Payroll in Tualatin: TriMet, transit and Paid Leave Oregon
Employers in the TriMet district pay the TriMet transit payroll tax on wages for work done inside the district. It is based on where the work happens, including job sites and home locations, not where the company is registered. A Tualatin employer with people working in the plant, on the road and at home may owe it on some wages and not others.
On top of that, employers withhold the statewide transit tax from employee wages and handle Paid Leave Oregon contributions. For 2026 the Paid Leave Oregon rate is 1%. Employees pay 60% of it, and employers with 25 or more employees pay the other 40%.
Getting these right every quarter is a big part of what a CPA or payroll service does for a Tualatin company. Mistakes can sit unnoticed for months and then arrive as letters from the state.
Tax returns for Tualatin households
If you live in Tualatin and work in manufacturing, tech or health care, part of your pay may come as stock. RSUs or an employee stock purchase plan can create income that is easy to report wrongly, especially when shares are sold.
If your home is inside the Metro boundary and your Oregon taxable income is over $125,000 single or $200,000 joint, the Metro SHS personal income tax applies at 1% on the amount above that line for tax year 2025. If you work in Portland and earn enough, the Preschool for All tax can also apply to income earned inside Multnomah County, even though you live in Tualatin.
Do not forget the Oregon kicker. Oregon paid a kicker credit on tax year 2025 returns to people who filed a 2024 return and also filed a 2025 return. A young adult in the household who skipped a year may have missed it.
Your CPA can prepare your federal, Oregon and local returns together, so nothing is filed on its own and forgotten.
Small and growing businesses in Tualatin
Not every Tualatin business is a factory. Consultants, contractors, clinics and service firms need bookkeeping, a clear chart of accounts, and someone to tell them when it is time to move from a sole proprietor to an LLC or S corp.
If you are just starting out, your CPA can set up your books, plan your quarterly estimated taxes, and help you understand which Oregon and local taxes will apply as you grow.
Some Tualatin health services practices and tech firms are owned by several partners. A partnership or multi member LLC files Form 1065 and sends each partner a K-1, and each partner then reports that income on a personal return. Your CPA can handle both sides so the numbers match.
How to get a quote from Tualatin
Fill in the quote form with a short description of your business or household. A licensed CPA who works with companies or families like yours gets in touch with a clear, fixed quote.
After that, documents are shared online, your CPA asks follow up questions, and you approve returns before filing. If a meeting at your site or in person helps, it can be arranged.
Who we work with here
- Manufacturers and distributors
- Technology and health services firms
- Employers with staff in several locations
- Employees with stock compensation
- Consultants, contractors and service businesses
- Households over the Metro SHS threshold
Common questions
Tualatin is in two counties. Does that change my taxes?
For income tax, usually not. Tualatin is in Washington and Clackamas counties, and neither applies the Preschool for All tax to its residents. What matters more is whether your home is inside the Metro boundary.
When does a Tualatin business owe Oregon CAT?
Businesses register within 30 days of reaching $750,000 in Oregon commercial activity. Those over $1 million must file and pay $250 plus 0.57% of taxable Oregon commercial activity above $1 million.
Who pays the TriMet payroll tax?
Employers and self employed people pay it on work done inside the TriMet district. It is based on where the work is done, including job sites and home locations.
Do you have an office in Tualatin?
No. Our office is at 515 NW Saltzman Rd in Portland. Most clients work with their CPA online, and meetings are arranged when needed.
Does the Metro SHS business tax apply to my small company?
Only if gross receipts are over $5 million. Sole proprietors are not subject to it at all; their business income is reported on the owner's personal return.
Will I get a price before work starts?
Yes. After you send the quote form, a licensed CPA who handles your type of work gets in touch with a clear, fixed quote.
I live in Tualatin and work in Portland. Do I owe Portland area taxes?
You may owe the Preschool for All tax on income earned inside Multnomah County if your income is over the threshold. The Metro SHS tax depends on whether your home or your income is inside the Metro boundary.
Can a CPA help with RSUs and ESPP shares?
Yes. Your CPA checks the income on your W-2 against the cost basis on your brokerage forms, so you are not taxed twice on the same shares when you sell.