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Business Details
50+ Years
experience
Expert Accounting and Tax Services in Seattle
Since 1946, Tremper & Co. & Co. has been dedicated to providing exceptional accounting, tax, and business consulting services to individuals, businesses, and organizations across the Pacific Northwest. Our firm operates on the principle that client success is our success, reflected in our organizational structure, team attitude, and engagement approach. With a legacy of over 75 years, we combine deep industry experience with a commitment to quality, evidenced by our membership in the American Institute of Certified Public Accountants and the Washington Society of Certified Public Accountants. Our rigorous quality control system, reviewed every three years by independent auditors, has consistently earned unqualified reports, underscoring our adherence to professional standards.

We specialize in tailored financial solutions, including tax planning, audit services, business consulting, and estate planning, designed to meet the unique needs of non-public corporations, nonprofits, partnerships, and individuals. Our team of CPAs and tax advisors delivers timely, professional services that exceed client expectations, ensuring compliance and strategic growth in an ever-evolving financial landscape.
Services
Tax Prep and Planning Accounting Audit Services Review Services Compilation Services Bookkeeping Business Consulting Estate and Trust Valuation Services
Details
  • Year established: 1946
Highlights and features
  • We have over 75 years of experience in accounting and tax services.
  • Our team includes CPAs and tax advisors with expertise in business consulting.
  • We maintain a rigorous quality control system reviewed every three years.
  • We serve individuals, businesses, and organizations with tailored financial solutions.
  • Our client-focused approach ensures personalized service year after year.
Associations and certifications
  • American Institute of Certified Public Accountants
  • Washington Society of Certified Public Accountants
Services
Tax Prep and Planning
Tremper & Co. & Co. offers comprehensive tax consulting and compliance services for individuals and businesses. Our expertise includes income tax preparation, retirement planning, estate and trust taxation, and IRS representation. We help clients navigate complex tax environments with strategies for wealth preservation and regulatory compliance.
Audit Services
We provide auditing services for non-public corporations, nonprofits, and partnerships. Our team ensures financial statements meet regulatory standards while delivering insights to improve business performance. Specialized audits focus on compliance, risk management, and operational efficiency for diverse industries.
Business Consulting
Our business consulting services integrate tax planning, financial strategy, and succession planning for family-owned and closely held businesses. We assist with mergers, acquisitions, retirement plans, and cash flow analysis to strengthen clients' financial positions and long-term growth.
Estate and Trust
Tremper & Co. & Co. specializes in estate and trust planning, including tax strategies, charitable trusts, and family partnership structures. We prepare valuation reports for estate tax purposes and guide clients through gifting, business sales, and transitional planning with precision and care.
Bookkeeping
We deliver efficient bookkeeping and financial reporting services tailored to small businesses. Our solutions ensure accurate record-keeping, timely financial statements, and compliance with tax regulations, enabling clients to focus on operational growth without administrative burdens.
Questions
What accounting services does Tremper & Co. & Co. & Co. offer?
We provide audit, review, compilation, and bookkeeping services for businesses, nonprofits, and individuals, tailored to meet regulatory and operational needs.
Do you specialize in tax planning for specific industries?
Our tax planning services cater to family-owned businesses, nonprofits, and individuals with complex financial portfolios across the Pacific Northwest.
How does Tremper & Co. & Co. & Co. ensure service quality?
We maintain a peer-reviewed quality control system, reviewed every three years by independent auditors, with a history of unqualified reports since 1946.
Can you assist with business succession planning?
Yes, we offer strategic succession planning for family businesses, including buy-sell agreements, tax strategies, and leadership transition frameworks.
What areas do you serve?
We primarily serve Seattle, WA, and the broader Pacific Northwest region, supporting local businesses and organizations.