CPA and tax preparation in Wilsonville

A CPA for Wilsonville employers and residents

Wilsonville was incorporated in 1968. It lies in both Clackamas County and Washington County and is one of the 24 cities in the Metro region. The city lists manufacturing, logistics, digital technology, optics, medical equipment and aerospace among its key industries.

That business base shapes the tax work. Wilsonville employers deal with a payroll rule that differs from the rest of the Portland area, and residents who work in these sectors may have stock plans, bonuses and income from employers that operate in several states.

Our office is at 515 NW Saltzman Rd in Portland. We do not have an office in Wilsonville. Most clients work with their CPA online, and meetings are arranged when needed.

The Wilsonville transit tax and SMART

Employers inside the TriMet district pay the TriMet transit payroll tax. Wilsonville is different. Wilsonville has its own bus system, South Metro Area Regional Transit (SMART), and funds it with the Wilsonville transit tax, an excise tax paid by the employer. The rate has been 0.5% of wages since 10/1/2008, according to the city.

Some Wilsonville properties sit inside TriMet's boundaries rather than SMART's, and the city has been asking TriMet to move unserved properties out of its district. The rule that matters for payroll is simple: you do not pay both the Wilsonville transit tax and the TriMet tax on the same wages. Which one applies depends on where the work is done.

A payroll setup copied from a Portland location may assume TriMet, so it pays to check. A CPA or payroll service can review each work location and set up the right tax from the start.

Self employed people are not left out. The city's transit tax rules include a self employment tax for people who work for themselves, so a Wilsonville consultant or contractor should check whether it applies to their net earnings before assuming TriMet rules cover them.

Other payroll taxes Wilsonville employers handle

Beyond the transit tax, employers withhold the statewide transit tax from wages. It applies to Oregon residents wherever they work and to nonresidents working in Oregon, which matters for Wilsonville companies that hire people living in Washington State.

Paid Leave Oregon also applies. For 2026 the contribution rate is 1%, with employees paying 60% and employers with 25 or more employees paying the other 40%.

Your CPA can review your quarterly Oregon reports, match them to your payroll records, and help you answer any state letters about mismatches.

Business taxes for Wilsonville companies

Manufacturers and distributors can reach the Oregon Corporate Activity Tax thresholds quickly, because the tax 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 $250 plus 0.57% of taxable Oregon commercial activity above $1 million.

Because Wilsonville is in the Metro region, a partnership, LLC or corporation with more than $5 million in gross receipts may also owe the Metro Supportive Housing Services business income tax, at 1% of profit apportioned to the Metro district. Companies that sell across the country need careful apportionment so they pay on the right share.

Startups in the city face a different question: when to form an entity and how. An LLC, an S corp election or a C corporation each changes how profit is taxed and which Oregon and Metro filings apply. Your CPA can talk through the tax side before you file the paperwork.

Your CPA can prepare federal and Oregon business returns, CAT returns and Metro filings together, so the numbers on each one agree.

Tax returns for Wilsonville households

If you work in tech, medical equipment or aerospace, your pay might include RSUs, an employee stock purchase plan or bonuses. Stock income is often reported on your W-2 and again on brokerage forms, and getting the cost basis right is what keeps you from paying tax twice on the same shares.

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% above that line for tax year 2025. Wilsonville is outside Multnomah County, so Preschool for All only applies if you earn income inside Multnomah County and pass its thresholds.

Two other items are worth checking on a Wilsonville household return. Oregon paid a kicker credit on tax year 2025 returns to people who filed a 2024 return and also filed a 2025 return, so anyone who skipped a year should check. And if you have a side business on top of a salaried job, your CPA can work out quarterly estimated payments so the 4/15 bill is not a surprise.

How to get a quote from Wilsonville

Fill in the short quote form and tell us whether you need business, payroll or personal tax help. A licensed CPA who works with companies and households 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 every return before filing. If an in person meeting at your office would help, it can be arranged.

Common questions