Washington · WA

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Seattle CPAs serve tech, aerospace, and the Pacific Northwest's deep entrepreneurial bench.

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Local hiring guide

Common CPA services in Seattle

The work Seattle residents and small businesses most often hire a CPA to handle.

  • Annual business and individual tax preparation
  • Tax planning and quarterly estimates
  • Bookkeeping and monthly close
  • Entity selection and formation (LLC, S-corp, C-corp)
  • Payroll setup and filings
  • IRS notice response and audit representation
  • Financial statement preparation (compilation / review)

Industries

Small-business industries shaping Seattle

The local economy your Seattle CPA should already know how to serve.

Tech & cloud / SaaS

Aerospace & advanced manufacturing

E-commerce & Amazon sellers

Real estate & construction

Maritime & fishing

Decision guide

When to hire a CPA vs. a bookkeeper

A bookkeeper records the past. A CPA shapes the future — taxes, structure, strategy.

Hire a bookkeeper when…

  • You need day-to-day transaction categorization and bank reconciliations
  • You want monthly financials but no tax filings or planning
  • Revenue is under ~$500K and your structure is simple (sole prop / single-member LLC)
  • You already have a CPA for taxes and just need clean books

Hire a CPA when…

  • You're filing business taxes (S-corp, C-corp, partnership)
  • You need tax planning, entity restructuring, or multi-state filings
  • You received an IRS or state tax notice or are facing an audit
  • You're raising capital, selling a business, or doing equity comp planning
  • Your books are a mess and you need cleanup plus a long-term advisor

Before you sign

Questions to ask any Seattle CPA before hiring

Use this checklist on your first call. Strong CPAs welcome these questions.

  1. Are you a licensed CPA in this state? What's your license number?
  2. What industries do you specialize in, and how many clients like me do you serve?
  3. Who actually does the work — you, a staff accountant, or an offshore team?
  4. How do you bill — hourly, fixed-fee, or monthly retainer? What's typical for my size?
  5. What software do you use (QuickBooks, Xero, NetSuite), and do I get access to my files?
  6. How do you handle IRS notices or audits if they come up later?
  7. What's your response-time expectation during and outside of tax season?
  8. Can you provide references from clients in my industry?

Stay compliant

Tax deadlines and Washington notes

Federal deadlines plus the state and local filings that catch most filers off guard.

Monthly / Quarterly / Annually

WA Business & Occupation (B&O) tax filings to the Department of Revenue (frequency depends on revenue).

Apr 30

Seattle business license tax annual return; Seattle Payroll Expense Tax (JumpStart) for large employers.

Apr 15

Federal individual (1040) and C-corp (1120) returns; WA 7% capital gains tax return for long-term gains above $262K.

Jan 31

W-2s and 1099-NEC due to recipients and the IRS.

Mar 15

S-corp (1120-S) and partnership (1065) returns or 6-month extension.

Apr 15

Individual (1040) and C-corp (1120) returns; Q1 estimated taxes due.

Jun 16

Q2 estimated taxes due.

Sep 15

Q3 estimates; extended S-corp and partnership returns due.

Oct 15

Extended individual and C-corp returns due.

Informational only — not tax advice. Confirm current deadlines with your CPA or the relevant authority.

Nearby

Nearby cities to Seattle

Major metros our directory also serves.

FAQ

Frequently asked questions about CPAs in Seattle

How much does a CPA cost in Seattle?

Seattle CPAs typically charge $250–$550/hour, $500–$1,800 for individual returns, and $1,800–$7,000+ for business returns. Tech and Amazon-seller specialists charge more for multi-state sales tax (Wayfair) and equity comp work.

What is the WA Business & Occupation (B&O) tax?

Washington has no income tax — instead, the B&O tax applies to gross receipts at rates that vary by activity (e.g., 0.471% retailing, 1.5% services). It is owed even when the business is unprofitable. Most Seattle CPAs handle B&O alongside the federal return.

Do Seattle residents owe state capital gains tax?

Washington's 7% capital gains tax applies to long-term gains above roughly $262K (2024, indexed) for individuals — mainly from stock sales. Real estate, retirement accounts, and primary residence gains are excluded. RSU vesting taxed as ordinary income is not subject to it, but post-vest stock sales can be.

What is the Seattle Payroll Expense Tax (JumpStart)?

Seattle taxes large employers (~$8.5M+ in Seattle payroll) on compensation paid to employees earning over $189K, at rates from 0.7% to 2.4%. Most small businesses are exempt, but employers approaching the threshold should plan with a Seattle CPA.

Compare your options

Hiring a verified Seattle CPA vs. DIY

FactorVerified Seattle CPADIY / generalist
Local tax knowledgeSeattle state + local filingsFederal only
Audit defenseRepresents you to the IRSYou handle correspondence
Year-round planning
Typical fee$200–$3,500 / engagement$0 software + your hours
Specialty matchIndustry-experiencedGeneral-purpose

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