2026 tax year · Wisconsin
Is an S-corp election worth it in Wisconsin?
On $100,000 of profit the election saves about $4,860 a year in Wisconsin, after everything Wisconsin charges the company.
Work it out on your own numbers
The figures below use $100,000 of profit and our standard assumptions. Put your own in instead, this compares staying a sole proprietor against electing, with Wisconsin's own charges on the company included:
Salary share and withdrawal share are percentages. The withdrawal figure only affects the C corporation, it is what decides whether the second layer of tax applies at all.
Enter your figures above and press Compare.
What the election is worth on $100,000 of profit
A single filer taking the standard deduction, paying themselves 40% of profit as salary, with $1,500 a year of payroll and filing cost:
| Tax as a sole proprietor | $26,903 |
| Tax as an S-corp, federal and personal state | $21,818 |
| Saving from the payroll-tax split alone | $5,085 |
| What Wisconsin charges the company | − $225 |
| Net saving | $4,860 |
Wisconsin charges the company 0.2% of net income plus a $25 minimum.
- A threshold this calculator cannot check. Part of Wisconsin's charge only applies above $4,000,000 of receipts or base, which depends on turnover rather than profit. The figure above assumes you are below it.
The profit range where it actually pays in Wisconsin
From about $20,000 of profit upwards. Below that, the $1,500 of payroll cost is more than the saving.
| Net profit | Sole proprietor | S-corp, all in | Difference |
|---|---|---|---|
| $60,000 | $14,606 | $11,689 | saves $2,917 |
| $100,000 | $26,903 | $22,043 | saves $4,860 |
| $150,000 | $44,609 | $37,198 | saves $7,411 |
| $250,000 | $77,894 | $71,423 | saves $6,471 |
What Wisconsin does differently
Wisconsin taxes the profit either way. Whether you take it as self-employment income or as salary plus distribution, roughly $4,913 of Wisconsin income tax sits on $100,000 of profit, the election moves the payroll-tax half of the bill, not the state half.
Wisconsin is one of 31 states with a pass-through entity tax. Entity pays state tax on behalf of owners. Owners get state tax credit on their personal return. The entity-level payment is deductible as a business expense, bypassing the $40,400 SALT cap. That is a genuine reason to elect beyond the payroll-tax saving, and it is not in the figures on this page, the calculation below is federal payroll tax against Wisconsin income tax as an individual.
The Wisconsin detail
Wisconsin automatically treats a federal S corporation as a tax-option (S) corporation, but uniquely allows an OPT-OUT by consent of holders of more than 50% of shares, after which it is taxed as a C corp. The rate here is the mandatory Economic Development Surcharge, NOT an income tax: 0.2% of Wisconsin apportioned net income, minimum $25, maximum $9,800. And it applies ONLY to tax-option S corps with $4,000,000 or more of gross receipts. Below that threshold there is no surcharge and no minimum, so it does not apply to a typical small business. A separate optional 7.9% PTET exists.
How much salary to pay yourself
Enter your figures above and press Calculate.
Less salary means less payroll tax, so the arithmetic always points at the smallest salary you can justify. That is exactly why it is not a number to optimize: compensation has to be reasonable for the work you do, and the penalty for getting it wrong is reclassification plus back payroll tax. The cheapest row here is the riskiest one.
| Salary share | Salary | Distribution | Total tax | vs sole proprietor |
|---|---|---|---|---|
| 20% | $20,000 | $76,970 | $18,296 | $8,607 |
| 30% | $30,000 | $66,205 | $20,057 | $6,846 |
| 40% | $40,000 | $55,440 | $21,818 | $5,085 |
| 50% | $50,000 | $44,675 | $23,580 | $3,324 |
| 60% | $60,000 | $33,910 | $25,341 | $1,563 |
What this assumes
- Single filer, standard deduction, the business as the only income.
- 40% of profit taken as salary in the headline figures.
- $1,500 a year for payroll and a separate 1120-S, a cost estimate, not a tax figure, and it varies by provider.
- Comparing against a sole proprietorship. If you already trade through an LLC, some state fees are owed either way and are not a cost of electing.
- Anything listed as not modeled above is genuinely owed, it is excluded because it does not depend on profit, not because it is nil.
What these words mean
- Pass-through
- A business that pays no tax itself, its profit passes through to the owners, who pay tax on it on their personal returns. S corporations, partnerships and most LLCs work this way.
- Gross receipts
- Everything the business took in, before subtracting any costs. A tax on gross receipts is owed even by a business making a loss, which is what makes it different from a tax on profit.
- Entity level
- A tax charged to the company itself, before any profit reaches the owners, as opposed to a tax the owners pay on their own returns.
- C corporation
- A company taxed as a separate taxpayer in its own right, so profit is taxed once to the company and again to the owner when paid out. The thing an S corporation election is meant to avoid.
- S corporation election
- Asking the tax office to treat your company as a pass-through, so profit is taxed to you rather than to the company. The owner takes a salary and the rest as a distribution, which is what saves payroll tax.
- Distribution
- Profit paid out to a company’s owner that is not salary. It is not subject to payroll or self-employment tax, which is the whole point of the S corporation election. And why the salary has to be defensible.