Seattle CPA Services for Complex Tax, Audit & Advisory
Seattle CPA support for founders, executives, technology workers, real estate investors, and professional firms that need Washington B&O, sales tax, capital gains, equity compensation, remote work, and federal planning reviewed together before a filing, financing round, or tax notice narrows the options.
Tax and reporting decisions for Seattle businesses and owners
Seattle businesses and owners may need to coordinate Washington B&O classification, retail sales tax, and capital gains tax with federal tax planning. Equity compensation, customer locations, remote employees, K-1 income, and rental property can each affect the records and filings involved.
We scope the engagement from the source records first. That means identifying whether the work is a return, B&O or sales-tax review, notice response, investor-ready close, audit/review/compilation, 83(b) project, or CFO reporting cleanup before we recommend a deliverable.
What we verify before scoping Seattle work
State tax posture
Washington does not impose a broad wage-based individual or corporate income tax, but the Department of Revenue still administers B&O, sales tax, capital gains, and other excise-tax rules that can affect Seattle businesses and owners.
Records we request early
B&O filings, sales-tax reports, customer sourcing, exemption certificates, marketplace reports, stock-comp documents, 83(b) support, brokerage detail, property schedules, K-1s, and prior Washington notices.
Seattle planning trigger
An equity event or business expansion can create both federal and Washington tax questions. Reviewing the transaction dates, customer receipts, and work locations early helps identify the filings and records needed.
Virtual service note
KAS CPA is virtual-first and does not claim a walk-in Seattle office. Seattle clients work through secure portal, video meetings, e-signature, and structured onboarding.
Priority CPA services for Seattle
Founder, Equity & 83(b) Planning
Option exercises, restricted stock, 83(b) elections, QSBS review, and liquidity-event planning when Seattle equity compensation has federal and Washington implications.
Learn More ->Business Tax Strategy
Entity, owner-compensation, B&O classification, sales-tax, estimated-payment, and multistate planning for Seattle companies and professional firms.
Learn More ->Virtual CFO & Close Support
Monthly close, KPI reporting, forecasting, and board/investor packages for founders and operators who need clean numbers before decisions.
Learn More ->Audit, Review & Compilation
Financial statement support for lender, investor, board, acquisition, grant, and management reporting requests tied to Seattle operations. Audit, review, and compilation engagements for Washington entities are accepted under Washington's CPA firm mobility rules.
Learn More ->Capital Markets Advisory
Financing readiness, diligence support, investor reporting, and tax-aware transaction planning for companies preparing for outside capital.
Learn More ->Real Estate Tax Planning
Rental activity, depreciation, passive-loss, K-1, sale, and exchange planning for Seattle-area real estate investors.
Learn More ->Official sources we check first
These official resources explain the tax and filing requirements discussed above. We review the applicable guidance alongside your records.
Related KAS guidance for Seattle clients
These pages help connect the local Seattle issues above to the broader state, federal, and service-specific planning that usually drives the final answer.
Seattle CPA FAQs
Do Seattle clients need Washington planning if there is no broad wage income tax?
Often, yes. Seattle clients may still have Washington B&O tax, sales tax, capital gains tax, payroll, property, or multistate sourcing issues that need to be coordinated with the federal return.
What Seattle records do you review before giving tax advice?
We usually start with B&O and sales-tax filings, customer-location detail, exemption certificates, payroll reports, equity-compensation documents, brokerage files, K-1s, rental schedules, and any Washington Department of Revenue notices.
Do you have a physical office in Seattle?
No. KAS CPA is a virtual-first CPA practice. Seattle clients use secure document exchange, video meetings, phone, e-signature, and structured onboarding.
Who can benefit from Seattle CPA support?
We help founders, technology workers, executives, real estate investors, professional firms, and closely held businesses whose Seattle planning involves more than a simple annual return.
Ready to Get Started in Seattle?
Schedule a complimentary consultation to discuss your Seattle tax situation and how we can help you achieve your financial goals.