The Law Offices of John P. McDonnell provides clients with a tax lawyer with a successful history of dealing with difficult tax issues, including litigating against the IRS. Our firm is dedicated to offering skilled legal representation to individuals and businesses, with an emphasis on tax advice and tax litigation. Because we are small firm, we offer you personalized service and high quality legal counsel to address the most challenging types of tax problems. If you are looking for a Silicon Valley tax lawyer, please contact The Law Offices of John P. McDonnell today for a consultation. When you have a tax dispute with the IRS, you will usually need a high-quality, experienced attorney. The IRS is deadly serious when it proposes tax increases, and if the matter looks to be heading to court, you need to be serious too.