The income your LLC earns in Wisconsin isn’t taxed at the business level. Instead, it passes through to your personal Wisconsin income tax return, where it gets taxed at the state’s graduated individual rates. This applies whether you’re a single-member LLC or a multi-member LLC that hasn’t elected corporate taxation.

Wisconsin’s individual income tax rates range from 3.54% to 7.65%, spread across four brackets. The top rate of 7.65% applies to taxable income above $405,550 for married filing jointly or $270,050 for single filers. Most small business owners throughout Wisconsin land somewhere in the middle brackets, paying effective state rates between 4.4% and 5.3% on the bulk of their business income.

Your LLC reports its income and expenses, and the net profit flows to your personal federal Form 1040 and Wisconsin Form 1. You owe both federal and Wisconsin state income tax on that profit regardless of whether you actually took the money out of the business. This trips up a lot of owners. If your LLC earned $80,000 in profit but you only distributed $50,000 to yourself, you still owe taxes on the full $80,000.

Self-employment tax is a separate layer on top of all this. As an LLC owner, you’ll pay 15.3% in federal self-employment tax on your net self-employment earnings. That covers Social Security and Medicare. Combined with federal income tax and Wisconsin state tax, your total effective rate can be significant. This is why financial strategy around estimated payments and cash reserves matters from day one.

Wisconsin also offers a pass-through entity tax (PTET) election that benefits certain owners. The federal Tax Cuts and Jobs Act capped the state and local tax (SALT) deduction at $10,000 on personal returns. The PTET lets your LLC pay Wisconsin income tax at the entity level rather than flowing it all to your personal return. You then receive a credit on your personal Wisconsin return while the entity gets a federal deduction that isn’t subject to the SALT cap. The net effect is that you recover the state tax deduction you would have otherwise lost.

The PTET election isn’t automatic and it doesn’t help everyone. It primarily benefits owners who are already hitting the $10,000 SALT cap on their personal returns, which generally means higher income earners or those in areas with meaningful property taxes. Your LLC has to make the election with the Wisconsin Department of Revenue by the required deadline, and multi-member LLCs need agreement from the members.

Whether or not the PTET makes sense for you, the fundamentals stay the same. Your LLC profit is your taxable income in Wisconsin, and you need to plan for estimated tax payments throughout the year so you’re not scrambling in April. Keeping your books clean and current is what makes that planning possible. Our Beaver Dam accounting services help Wisconsin LLC owners stay on top of their numbers so tax time is predictable rather than stressful.