The general rule is that S-Corp election starts making sense when your business net income consistently exceeds around $70,000 per year. At that point, the self-employment tax savings typically outweigh the additional costs of running payroll and maintaining the S-Corp structure.

Here’s why it matters. As a sole proprietor or single-member LLC, you pay self-employment tax of 15.3% on all your net business income. That covers Social Security (12.4%) and Medicare (2.9%). On $100,000 of net income, that’s roughly $15,300 in SE tax alone, on top of your income tax.

With an S-Corp election, you pay yourself a reasonable W-2 salary and take the remaining profit as a distribution. You only pay payroll taxes on the salary portion. If your business nets $100,000 and you pay yourself a $55,000 salary, you save roughly 15.3% on the $45,000 in distributions. That’s about $6,900 in annual tax savings.

But S-Corp status comes with costs. You’ll need to run payroll for yourself, which means either paying for payroll software or a payroll service. You’ll also need to file quarterly payroll tax returns, a separate S-Corp tax return (Form 1120-S), and handle Wisconsin state filing requirements. Between payroll processing, the additional tax return preparation, and other compliance work, expect to spend $2,000 to $3,000 or more per year on these obligations.

When net income is below $50,000 to $60,000, the tax savings often don’t justify those costs. The break-even point for most Wisconsin business owners falls somewhere around $70,000 in consistent net income. “Consistent” is the key word. One strong year followed by a slow year doesn’t warrant the switch. You want to see a reliable pattern before adding complexity to your business structure.

The IRS requires S-Corp owners to pay themselves a “reasonable salary” for the work they perform. You can’t pay yourself $20,000 and take $80,000 as distributions to dodge payroll taxes. The IRS looks at what someone in a similar role and industry would earn. Setting this number too low is one of the most common audit triggers for S-Corps, so don’t get creative here.

You also need clean, reliable books to make this decision well. If you don’t know your actual net income because your records are behind or disorganized, you’re guessing at whether S-Corp election is worth it. Financial strategy conversations that look at your real numbers, projected income, and total compliance costs will tell you whether the timing is right.

A few other things to know. S-Corp election is made by filing Form 2553 with the IRS, and there are deadlines. For an existing LLC, you generally need to file by March 15 of the year you want the election to take effect. Wisconsin conforms to the federal S-Corp election, so there’s no separate state filing for the election itself. You will file a Wisconsin Form 5S annually.

If your business is growing and you’re approaching that $70,000 threshold, start the conversation with your tax advisor before the year you want to make the switch. Talk to your bookkeeper too. Having Beaver Dam accounting services that track your net income accurately month to month gives you the data to make this call with confidence rather than guessing based on what your bank balance looks like. Rushing into S-Corp status without running the numbers can cost you more than it saves.