Rainier Legal Center

31615 Third Ave.,
P.O. Box 100
Black Diamond, WA 98010

(425) 432-3380


14205 SE 36th St.,
Suite 100
Bellevue, WA 98006

(425) 492-0066

McWS Law Inc.

19200 Von Karman Ave.,
Suite 400
Irvine, CA 92612

(714) 465-8008

About Us

McWilliams Law Group, a professional law corporation (“McWS Law”), was founded in 2014 by John M. McWilliams and concentrates on legal matters relating to tax law, tax planning, tax litigation, controversy and complex tax collection actions with federal and state agencies. McWilliams Law Group has offices in Irvine, California, and Bellevue and Black Diamond, Washington.

McWilliams Law Group serves as corporate and general counsel for a variety of business entities and several industries including entertainment, professional services, technology and start-up clients in the greater Los Angeles, Orange County and South Seattle areas. McWilliams Law Group provides tax planning and tax advisory services for middle market/small business entities and high net worth individuals including corporate and business law matters, mergers, acquisitions, entity reorganizations and estate planning.

McWS Law represents individuals, entrepreneurs, entertainers and small business owners, corporations, business entities and partnerships in connection with federal and state tax investigation issues involving the Internal Revenue Service (IRS), Tax Division of the Department of Justice (DOJ), Franchise Tax Board (FTB), Employment Development Department (EDD), State Board of Equalization (BOE) and other local and administrative agencies. Firm representation includes advising on matters pertaining to tax audits and examinations, appeals, voluntary disclosures, collection, judicial proceedings and civil tax litigation, negotiation of settlement and resolution agreements, offers in compromise as well as other tax aspects relating to business transactions and controversy issues raised by federal and state agencies.

Additionally, McWilliams Law Group represents clients with a variety of legal and accounting matters including domestic and international compliance and offshore banking matters resulting from offshore disclosure requirements for foreign reporting. McWS Law has advised a diverse set of clients on the tax implications and ramifications for business and real estate transactions, structuring and tax strategies for corporations, including S-corporations, private and closely-held entities, partnerships and limited liability companies.

McWS Law provides areas of representation including:
Tax Controversy – Any dispute over taxes causes a great deal of anxiety. Any loss could have a significant impact on your business or individual estate. With both CPAs and Tax Lawyers on our team, we understand the intricacies and complexities of tax law and the best ways to protect your interests. McWS Law provides assistance and resolutions for tax audits, litigation and dispute resolution proceedings including administrative appeals relating to the IRS, U.S. Tax Court, Claims Court and other federal, state and appellate courts. Firm representation includes business entities, individuals and shareholders, partners and partnerships, trusts and estates. Cases are resolved through negotiated settlement, agreement or disposition with the IRS Office of Appeals, U.S. Tax Court, Court of Federal Claims, US District Court or in California Superior Court for California state tax issues.

Business Tax Planning – Taxes can be one of the most significant expenses of your business. McWS Law assists in the formation of corporations, limited liability companies and partnerships and can help to find ways to minimize tax liabilities by structuring and implementing both taxable and tax-free acquisitions and dispositions of equity and assets, including ways to reorganize your business. McWS Law creates, negotiates and executes merger and acquisition contract agreements, shareholder agreements, employment contracts and corporate governance issues for corporations and other business entities. McWS Law performs in-depth legal and accounting analysis of complex transactions involving corporate contracts, intellectual property acquisitions and licensing agreements and guidance for navigating state, local and federal regulations and statutes.

Estate, Trust and Gift Tax Planning – McWS Law advises on estate planning issues pertaining to the drafting of wills, trusts, powers of attorney and advanced healthcare directives, trust and administrative issues relating to estates and trusts, probate proceedings and administrative matters, income taxation of estates, trust and beneficiaries, small business and closely-held business owners, marital and domestic partner property agreements.

Serving both California and Washington State, McWilliams Law Group assists businesses, individuals, shareholders and partners with planning and execution of strategies to maximize assets while avoiding excessive penalties. Because we are familiar with local and federal regulations and statutes, the professionals at McWS Law can help take advantage of existing opportunities and assist in a variety of practice areas including the following:

Practice Areas

  • Tax Controversy
  • Tax Audits, Liens & Investigation
  • Tax Planning
  • Corporate Law
  • Small Business Mergers & Acquisitions
  • Estates, Wills & Trusts
  • Estate and Trust Administration