Attorney Advertisement. Tax Attorneys Montgomery & Wetenkamp are licensed by the State Bar of California, are licensed attorneys authorized to practice before the United States Tax Court, and may practice before the Internal Revenue Service (IRS) as attorneys in all 50 states. Sacramento Tax Attorneys and Modesto Tax Attorneys Montgomery & Wetenkamp perform all services in Sacramento, California and Modesto, California. The content of this website is for informational purposes only and does not constitute legal advice. The tax information contained on this website, is not intended to be used, and cannot be used, referred to or relied upon, for the purpose of avoiding tax-related penalties under the Internal Revenue Code or promoting, marketing, or recommending to another party any tax-related transaction or matter addressed herein. Past successes cannot be an assurance of future successes because each case must be decided on its own merits and will differ if based on different facts.