Limited liability company (LLC) members commonly claim that their distributive shares of LLC income — after deducting compensation for services in the form of guaranteed payments — aren’t subject to self-employment (SE) tax. But the IRS has been cracking down on LLC members it claims have under-reported SE income, with some success in court. SE tax background Self-employment income is subject to a 12.4% Social Security tax (up to the wage base) and a 2.9% Medicare tax. Generally, if you’re a member of a partnership — including an LLC taxed as a partnership — that conducts a trade or business, you’re considered self-employed. General partners pay SE tax on all their business income from the partnership, whether it’s distributed or not. Limited partners, however, are subject to SE...