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Best CPA Firm in Seattle, WA for Small Business Taxes and Accounting

Tax Preparation, Accounting, and Payroll, Done Right the First Time

Running a business in Seattle means navigating complex tax rules, payroll deadlines, and year-round accounting demands that most owners never signed up for. At Dimov Tax, our Seattle CPAs handle all of it so you can stay focused on growing your business instead of drowning in paperwork. We work directly with business owners and individuals across Seattle and Washington State, learning your financials inside and out. Our tax accountants know the local requirements, spot deductions others miss, and build filing strategies designed around your specific situation, not a generic template.From small business tax preparation and payroll to full-service bookkeeping and accounting, we cover every piece of the financial puzzle. And because we work with you year-round, not just at tax time, we catch problems early and keep your books clean all year long. If you are looking for a CPA firm in Seattle that treats your money like their own.

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Rated 5 out of 5

"Highly Recommended for Complex Tax Situations I worked with Dimov Tax to prepare both my personal and business tax returns, and I was thoroughly impressed. My situation was fairly complex—LLC structure, multiple investment properties, and a range of personal considerations—and they handled it with professionalism and precision. They were responsive, knowledgeable, and took the time to understand the nuances of my financial landscape. I never felt rushed or overlooked; instead, they asked thoughtful questions and offered clear guidance throughout the process. If you're looking for a tax firm with the right expertise and a client-focused approach, I highly recommend Dimov." - Ben C

Rated 5 out of 5

Get award-winning accounting services

We handle individual and business taxes while helping you keep more of what you earn through long-term financial planning that supports your growth. Our team provides complete support to maximize your benefits. Let us help your business succeed financially. Contact us today.

Seattle and WA DOR Run Separate B&O Filing Tracks

Most operators here assume one B&O registration covers everything. It does not. State B&O files with WA DOR under its own classifications. City B&O uses distinct categories and files with Seattle on a separate schedule. We map revenue by filing category before either return goes out. Payroll above $9 million adds the Seattle Payroll Expense Tax on top. Our CPA Seattle team covers the full stack: WA DOR state B&O returns Seattle city gross receipts filings Payroll sourcing and Payroll Expense Tax

Washington Capital Gains Tax Catches RSU and Crypto Holders

Washington’s capital gains excise tax is a state-level levy on long-term gains above an annual deduction, administered by WA DOR. For any CPA Seattle client with stock or crypto exposure, that calculation runs separately. Washington taxes long-term gains at 7% above the $278,000 annual deduction. Gains above $1 million reach 9.9%. The exposure catches more filers than expected: Tech employees with active vesting schedules Founders realizing gains at a liquidity event Investors who assumed no income tax meant no state exposure Washington also ignores federal Qualified Opportunity Fund deferrals and disallows short-term losses from offsetting long-term gains. That distinction surfaces in tax preparation in Seattle on nearly every investor return we see.

WA DOR and Seattle File Separately, Penalties Run Separately

Washington capital gains excise tax is a state-level levy on long-term gains above an annual deduction, administered by WA DOR independently of any federal return. The city B&O penalty and the WA DOR penalty accrue on different tracks. Within our accounting services in Seattle, we treat both filings as separate obligations from day one. Missing one layer here costs more than the layer itself.

Seattle Tax and Accounting That Builds Wealth

Tax Preparation

Get your taxes done right, fast

We handle your business and personal tax returns together, saving you weeks of paperwork every year. Our tax CPA team knows how to maximize stock option deductions and manages multi-state filings without the headaches. You get accurate returns filed on time while you run your business.

Forensic Accounting

Evidence-based financial investigations

Financial fraud investigations take months when handled incorrectly, costing you valuable time and money. Our forensic accountants trace hidden assets and calculate damages with court-ready documentation that holds up under scrutiny. We deliver the evidence you need to resolve disputes quickly and recover what belongs to you.

Bookkeeping

Clean books, clear business picture

Most business owners waste hours on bookkeeping mistakes that cost them money at tax time. We teach you how proper records work while handling everything ourselves. Our small business CPAs use QuickBooks and other top systems to keep your finances organized and tax-ready year-round.

Tax Consulting

Smart tax choices, better results

International tax laws confuse most people because they change frequently and overlap between countries. We teach you how these rules work while handling your compliance requirements. Our Seattle tax consultants manage expat taxes, foreign income reporting, and multi-state filings so you stay compliant everywhere.

Payroll Services

Payroll compliance, handled correctly

Our small business accountants fix payroll problems before they cost you money. We manage payroll setup, taxes, and benefits through QuickBooks, Gusto, Rippling, and more. We handle multi-state issues so you can stay focused on growing your business without the stress.

Amended Tax Returns

Fix past tax return mistakes

Most people file their taxes thinking everything is correct, then get surprised by late forms or missed deductions that could save them money. We handle Form 1040X amendments when you find errors, receive corrected documents, or remember income you forgot to report originally.

Financial Audits

Thorough reviews for accuracy

We conduct third-party audits that give you confidence in your financial records while keeping costs reasonable. Our certified tax accountants understand business compliance requirements and explain everything clearly throughout the process. You get thorough auditing services from Washington’s most trusted team at prices that beat most competitors.

Tax Audit Representation

Expert defense in IRS audits

IRS audits happen whether you want them or not. Our certified tax accountants win most cases on the first response with correspondence, field, state, sales, and payroll audits. We know the rules, handle the paperwork, and deal with agents while you focus on business. Other firms struggle where we succeed.

Real Estate Taxes

Property tax planning made simple

Your investments need planning, your rentals need strategy, and your portfolio needs protection. Poor decisions cost money, weak planning costs opportunity, and bad timing costs everything. Every property owner requires comprehensive tax guidance for long-term wealth building. We handle your 1031 exchanges in Seattle, structure your business, and guarantee your financial success.

Resources From Our Expert Accountants

Visit our resource center to learn how we legally maximize your tax benefits through deductions and credits. Our articles share insights on local and international tax laws that help you keep more money. Knowledge protects your business. Explore our resources today.

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Get Your Tax & Accounting Questions Answered

Questions about our fees come up all the time. How much does bookkeeping cost? What about cryptocurrency tax help or regular filing? Our tax accountants have put together answers that make everything easy to understand.

Average accountant hourly rates by years of experience (2025)

Hourly Rate ($)

$400 $300 $200 $100 $0

1-2 years

2-4 years

4-6 years

6-8 years

8-10 years

10+ years

Does the city B&O file separately from our WA DOR state B&O returns?

Yes, and one does not satisfy the other. State B&O files with WA DOR under its own classifications. City B&O uses separate categories and files directly with Seattle on a different schedule. Both apply to the same gross revenue. Penalties accrue separately. A clean state return says nothing about what the city received.

Do my RSU sales trigger Washington capital gains excise tax?

Shares sold at vesting are compensation, not capital gains. No Washington capital gains exposure there. Shares held past vesting and sold long-term are taxable above the $278,000 standard deduction at 7%. Gains above $1 million reach 9.9%. We separate the vest date from the sale date on every tech employee return.

Yes. The 5% charge applies to any single employee earning above $1 million in Seattle, regardless of total company payroll. The Payroll Expense Tax threshold is irrelevant here. Both taxes file with Seattle on separate schedules.

Can my estate owe Washington estate tax even if it falls below the federal exemption?

Yes. Washington’s 2026 filing threshold is $3,076,000 gross estate. The federal exemption is much higher. A Seattle resident with home equity, investments, and life insurance can cross the Washington threshold without approaching the federal one. Rates run 10% to 35%.

What triggers the Seattle Payroll Expense Tax?

Two conditions must both be met: prior-year Seattle payroll above $9,074,409, and at least one employee earning $194,452 or more in 2026. Total company payroll is not the same as Seattle-sourced payroll. Our payroll services in Seattle start with that distinction, not the companywide payroll total. We track it separately on every engagement near those thresholds.

Your Personal and Business Accounting Team

Google Reviews

George Dimov CPA

4.9

Based on 30 reviews

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JBW 001

17:12 11 Dec 25

I found their knowledge of international tax matters to be comprehensive and their approach to my specific situation reassuring. Answer questions quickly and efficiently. Overall a smooth experience; would use again in future.

Adam Stelle

21:39 28 Nov 25

Using Dimov has led to 3 years of nightmares.I typically file my own taxes, but for 2022 had a complex situation where we needed to recover a very large ($30k+) amount of prior years taxes due to repayment of a signing bonus.Dimov filed our return, and it was flagged by the 'frivolous claims' department, essentially a black hole in the IRS. I expected Dimov would help us resolve the issue after paying ~$800, as clearly the IRS didn't like something about the return, but Dimov has not been helpful, only willing to help if I pay more up front (I even offered to pay them many thousands out of the refund.) 3 years later and I've all but given up on the return.

Lindsay L. Webb

20:31 30 Oct 25

Patient, persistent, accurate, rapid response.

Charles Liyab

18:23 29 Oct 25

Excellent service. Timely filing. You won't have to worry about filing your taxes on time if you have a busy schedule. Let them do your taxes for you. They'll have a whole team working on it. Reasonably priced as well for a Seattle area.

Ben C

20:19 10 Oct 25

Highly Recommended for Complex Tax SituationsI worked with Dimov Tax to prepare both my personal and business tax returns, and I was thoroughly impressed. My situation was fairly complex—LLC structure, multiple investment properties, and a range of personal considerations—and they handled it with professionalism and precision.They were responsive, knowledgeable, and took the time to understand the nuances of my financial landscape. I never felt rushed or overlooked; instead, they asked thoughtful questions and offered clear guidance throughout the process.If you're looking for a tax firm with the right expertise and a client-focused approach, I highly recommend Dimov.

Matthias Montgomery

04:28 05 Oct 25

Great quick returns! They were quick to respond and help with my tight deadline and it looked accurate!

Angie Simon

04:22 02 Sep 25

George Dimov CPA responded to my inquiry right away (while 3 other firms did not respond at all). Once I contracted with them they were very detailed and good to work with. They understand non-profits.

Christopher Johnson

02:52 12 Jul 25

Fast, professional, and transparent. It was a pleasure working with them for my 2023 taxes, and we will definitely be back next year!

Alessandro Faria

18:18 16 May 25

Absolutely outstanding service! George Dimov CPA tax prepares were knowledgeable, efficient, and incredibly thorough. They made the entire process stress-free and even found deductions I would have missed. Communication was clear and timely. I highly recommend them to anyone looking for reliable, professional tax help. Truly a five-star experience from start to finish!

Michael Yoon

17:12 28 Mar 25

George and team have done an excellent job with our individual tax returns and would highly recommend them! We have used them for two years now and will continue to use them.They are detailed and make the process of handing over documentations easy and secure. They are also very responsive and are happy to answer any questions or concerns you might have. They also do a great job explaining any confusing tax details.

Serving Seattle, CA and Surrounding Areas

Dimov Tax Specialists proudly serves clients throughout Seattle and the surrounding areas. Whether you need help with tax preparation, accounting, or financial planning, our experienced team delivers trusted, remote support tailored to your needs.

Phone Number: +1 (844) 630-2255

Hours:

• Monday: 7 AM – 8 PM
• Tuesday: 7 AM – 8 PM
• Wednesday: 7 AM – 8 PM
• Thursday: 7 AM – 8 PM
• Friday: 7 AM – 8 PM
• Saturday: 7 AM – 6 PM
• Sunday: 8 AM – 6 PM

Best CPA Firm in Seattle, WA for Small Business Taxes and Accounting

Tax Preparation, Accounting, and Payroll, Done Right the First Time

Get award-winning accounting services

Seattle and WA DOR Run Separate B&O Filing Tracks

Washington Capital Gains Tax Catches RSU and Crypto Holders

WA DOR and Seattle File Separately, Penalties Run Separately

Seattle Tax and Accounting That Builds Wealth

Tax Preparation

Get your taxes done right, fast

Forensic Accounting

Evidence-based financial investigations

Bookkeeping

Clean books, clear business picture

Tax Consulting

Smart tax choices, better results

Payroll Services

Payroll compliance, handled correctly

Amended Tax Returns

Fix past tax return mistakes

Financial Audits

Thorough reviews for accuracy

Tax Audit Representation

Expert defense in IRS audits

Real Estate Taxes

Property tax planning made simple

Resources From Our Expert Accountants

Get Your Tax & Accounting Questions Answered

Average accountant hourly rates by years of experience (2025)

Does the city B&O file separately from our WA DOR state B&O returns?

Do my RSU sales trigger Washington capital gains excise tax?

Does the Seattle Social Housing Tax apply even if we fall below the Payroll Expense Tax threshold?

Can my estate owe Washington estate tax even if it falls below the federal exemption?

What triggers the Seattle Payroll Expense Tax?

Your Personal and Business Accounting Team

Google Reviews

Serving Seattle, CA and Surrounding Areas

Transit Data

Optimize your taxes and save thousands

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