Tax practice is fairly self-explanatory, but you should realize also that major deals always involve tax lawyers. In some situations, tax law drives everything. Tax is also an important part of any business planning, and lawyers who specialize in tax give legal advice and handle tax-related legal matters for a very wide variety of business entities, from sole proprietorships to multi-national concerns. Tax is everywhere, and the basic course is crucial for everyone. Serious corporate and commercial lawyers will generally want to know corporate and partnership tax law, even if they are not tax lawyers. Tax lawyers need to know that much, and more.