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State and Local Tax Experts

Madison Cooke is a leader in providing state & local tax consulting.

Not only is it our expertise- it's all we do!

Business Management Services

Taking your business to the next level

At Madison Cooke, we take a comprehensive approach to provide a thorough and complete review and analysis. We exceed our client’s expectations and deliver a service that is dramatically more valuable than the fee we earn. Our experience, at many levels, in many industries, has beneficial cross-over that other firms can’t match. In 95% of our reviews we have identified and successfully recovered tax dollars for our clients.

Audit Management

We manage state audits. Our help can range from complete audit management to "behind the scene" review of the auditor’s work. In either case it begins with a pre-audit review to assess your company’s area of exposure and opportunity.

State & Local Tax Planning

We structure transactions to minimize, defer, or eliminate state and local taxes. We can help your company with its tax planning. We perform complete reviews of accounts payable files, general ledger revenue and state and local tax accrual accounts, and fixed asset schedules.

State & Local Tax Administration

Preparation and filing returns & affidavits for both excise & property taxes;
Training for purchasing & finance staff;
Telephone technical support;
Temporary, on-site technical support;
State and local tax systems development and support.



Review (“Reverse Audit”) – Madison Cooke will do a comprehensive review of your sales, use, B&O, & personal property tax. No guesswork, no wasted time, just results. Over 95% of the time we find that our client is paying too much state and local tax.

Audit Defense

Madison Cooke manages state and local tax audits. Our assistance ranges from complete audit management to behind the scenes review of an auditor's work. In either case it begins with a pre-audit review to assess your company's areas of exposure and opportunity.


We obtain determination letters, conduct “no-name” negotiations, and research specific state and local tax issues. We structure transactions to minimize, defer, or eliminate state and local taxes. We facilitate proactive tax planning.


For most of our personal property clients we file annual tax affidavits with county assessors. Our compliance clients pay less tax and are better able to manage and administer their personal property tax costs. We often provide assistance and training with other aspects of state and local tax compliance and administration.

About Us


Our practical experience makes us unique. Law and theory are essential. But, we've been in your shoes and we know that to find, diagnose, and solve state and local tax problems you have to take that law and theory and get your hands dirty. You have to dig through accounts payable files, and purchase orders, and contracts, and general ledgers, and fixed asset schedules. Most important, you have to know both what you're looking at and what you're looking for – you can't waste a client's time with a lot of rookie questions.

Our goal is to be better, not bigger. We believe that the person doing the dirty work has to be the same person who knows the law and theory, not some junior associate. At Madison Cooke, there is no back room- what you see is what you get.

Madison Cooke began business in 1988. From the beginning our services have focused solely on state and local tax – specifically: sales, use, business and occupation (B&O), and personal property taxes. Those multi-state services include State and Local Tax Review (also known as “Reverse Audit”), Audit Management, Consulting, and Compliance. More than 95% of the companies we reviewed were paying too much state and local tax resulting in millions of dollars of savings for our clients. Those savings are the result of helping our clients better understand and manage their state and local tax obligations.

Our experts are the finest

We're Good With Numbers



Years of Proven Track Record


Clients Overpaying Taxes


Saved for our Clients


No Savings, No Fee

Why have an independent state and local tax review?

Every taxpayer can benefit from a fresh set of eyes periodically reviewing how state and local taxes are managed. A fresh perspective nearly always results in significant savings. Understanding ever changing state tax laws, agency practices and rulings are essential. But, it's only decades of practical experience in multiple states, jurisdictions and industries that allow our professionals to identify and implement proven tax-reducing strategies. Madison Cooke has a proven 30-year track record of creating substantial state and local tax savings for our clients.

What sets Madison Cooke apart?

Focus – State and local tax isn't just our expertise – it's all we do.

Practical experience – We bring decades of practical experience with state and local sales, use, B&O and personal property tax. Our practical experience involves auditing, accounting, finance, law, and tax administration. Our associates include former senior auditors of the Washington Department of Revenue in addition to former tax managers and tax administrators for manufacturing and high-tech companies. We've been in your shoes and understand your business and concerns from an insider's point of view.

Comprehensive approach – We don't focus on the low hanging fruit. All Madison Cooke's resources are applied to a thorough and complete review and analysis. Our experience, at many levels and in many industries, has beneficial cross-over effects that other firms can't match.

Forensic analysis – We are state and local “tax detectives.” Getting results requires both “art and science.” Consequently the professional associate who does the review and analysis has to be the same person who knows the law and theory, not a junior associate.

Proven results – In 95% of our reviews we have identified and successfully recovered tax dollars for our clients.

Follow up – Comprehensive training is provided after a successful review. We make sure you understand and implement the tax reduction strategies we identify.

Value – Our commitment is to deliver a service that is dramatically more valuable than the fee we earn.

How much of the client's time is normally required?

Madison Cooke's experience means we not only find more “misplaced tax,” it also means you and your staff will spend less time involved in the process. We start any review with a preliminary analysis. That analysis begins with a one-hour meeting to get acquainted with you and your staff and get a feel for your company's systems. After the meeting we spend an additional 2 to 4 hours (depending on the size and complexity of your company) independently reviewing the records we previously requested. When we are finished we go back to our office to continue our analysis. If the preliminary analysis indicates a reason to proceed we will communicate a plan for the completion of the review.

If refund issues are discovered Madison Cooke handles all aspects of processing refund claims. That includes scheduling of refund claims, presentation of refund claims to vendors or governmental entities, managing of refund audits, refund negotiation, and any other actions necessary to ensure the refund is received.

What types of issues typically arise in a review?

No two reviews are exactly alike but there are common themes.

Misunderstanding a particular credit, exemption or program:

  • Research & Development in non-traditional high tech and non-high tech taxpayers – In other words a client may have an engineering department whose activity falls under the statutory definition of “Research & Development.” R&D activity carries significant sales/use/B&O tax advantages.

  • Availability and scope of tax deferrals – Similarly, identifying eligibility for a deferral has significant tax advantages.

  • Availability and scope of exemptions – Similarly, identifying eligibility for an exemption has significant tax advantages.

Misunderstanding key elements of the taxpayer's business:

  • Tax decision makers and administrators often lack all the information necessary to classify the revenue stream correctly for B&O tax purposes.

  • How the purchased item is to be used by the taxpayer is more important than the nature of the purchased item. Taxpayers typically look at what is being purchased to determine taxability. Additionally, the tax decision maker usually does not have the information necessary.

  • Often the tax decision makers are not fully informed on what does and does not go into a particular product or how the product is produced. As a consequence items that are ingredients may wind up treated as supplies.

Accounting systems are NOT built for excise tax:

  • The use issue described above is often manifested in the accounting system. In other words, tax decisions are made by reference to “taxable” and “non-taxable” accounts which reflect the type of purchase rather than the intended use of a particular purpose.

  • Simple errors in charging purchases to the wrong account can result in significant overpayments. For instance a common error is inventory purchases coded to a supplies account.

  • Products and revenue accounts and classifications are often driven by other business issues (i.e. marketing or sales) and do not provide accurate information for excise tax reporting.

DOR audits & advice:

  • The DOR is required by statute and inclination to be conservative. Asking the DOR their opinion seldom results in an answer that gives the taxpayer the best result.

  • Excise tax is fact based. The way a question is phrased and the word/terms used are critical in getting the best response.

  • DOR audits, in theory, rely on statistical analysis. Taxpayers face two problems. First, they usually lack in house statistical expertise. Second, they are not aware of how the data provided for the audit can cause serious flaws in audit accuracy – “Garbage In, Garbage Out.”

  • Taxpayers don’t have the knowledge or the contacts to resolve difficult issues without going to an administrative appeal.

How successful is Madison Cooke?

  • We recover better than 85% of claims filed on behalf of our clients.

  • When engaged by a client to handle a DOR Audit (from the beginning) the client has always received a refund.

  • When engaged by a client to review a DOR audit, on average, for every $1 assessed by the auditor, we obtained $3 of credits. In only two cases did the client owe the state tax and then it was less then $50,000.

  • When engaged to follow another excise tax consultant we have always found at least 50% more in additional tax credits.

How does Madison Cooke get paid?

Our clients pay nothing if we don't produce tangible, satisfactory results. Because most of our work involves a review, most of our clients pay us based on our performance – no refund, no fee. We determine our fee in one of three ways:

Performance – Performance fees (contingency) are based on a percentage of the tax savings and/or refunds achieved through Madison Cooke's efforts. No savings or refunds – no fee. The percentage and time period covered are agreed to before any work begins.

Project/Hourly – Project/hourly fees are based on the estimated amount of time necessary to complete a specific project multiplied by Madison Cooke's hourly rates.

Hybrid – A combination of a performance and project/hourly fees often makes sense; particularly for certain types of work and certain types of clients. As with everything else, flexibility is important.


Audit Defense

Contact us


Email & Phone:


Tel: 425.688.1409

1123 Maple Ave SW Ste 100

Renton, WA 98057

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