Turning a side hustle into an LLC: what changes on the tax return (almost nothing)
A single-member LLC is taxed exactly like a sole proprietor. The reasons to form one are liability and credibility; the tax reason arrives later, with an S corporation election.
Somewhere around the first $10,000 of side income, a search for "do I need an LLC" happens. The answer from the tax code's side is short: a limited liability company with one owner is a disregarded entity. The IRS ignores it. The income and expenses go on the owner's Schedule C exactly as before, and the self-employment tax is unchanged.
What an LLC does change
- Liability. The company's debts and legal obligations are the company's, not the owner's personal assets — the protection is real but has limits, and it depends on the company being run as a separate thing: its own bank account, its own contracts, its own name on invoices.
- Presentation. Some clients and platforms prefer to contract with a company.
- State cost. Formation fees and annual reports or franchise taxes vary by state from tens of dollars to several hundred, every year.
Same Schedule C, same Schedule SE, same estimated payments, same qualified business income deduction. Anyone who was told an LLC would lower their taxes was told about the next step, not this one.
The next step: the S corporation election
An LLC can file a form electing to be taxed as an S corporation. The owner then becomes an employee of their own company, paid a salary through payroll with the ordinary 7.65% employee and 7.65% employer shares — and any profit above the salary is distributed without self-employment tax on it.
That gap is the saving. It is bounded by a rule: the salary must be reasonable for the work done, and the IRS reclassifies distributions as wages when it is not. The election also brings payroll filings, a separate corporate return and, usually, a payroll service and an accountant.
Where the arithmetic turns
Take $80,000 of profit. As a sole proprietor, self-employment tax is about $11,300. With an S election and a $50,000 salary, payroll tax on the salary is $7,650 and the remaining $30,000 of profit carries none — a saving of about $3,650, before the costs of running payroll and filing the corporate return, which commonly run $1,500–$3,000 a year. Illustrative figures; the reasonable-salary judgement is the variable.
| Sole proprietor | S corporation | |
|---|---|---|
| Self-employment / payroll tax | ≈ $11,300 | $7,650 on $50,000 salary |
| Tax on remaining $30,000 | Included above | $0 payroll tax |
| Added cost: payroll, corporate return | $0 | $1,500–$3,000 |
| Net saving | — | ≈ $650–$2,150 |
The election pays when the payroll tax saved on distributions exceeds the fixed cost of running a corporation. That crossover moves with the salary the IRS would consider reasonable for the work — a consultant billing $80,000 for 600 hours has a harder case for a $30,000 salary than a retailer with staff. The people who benefit most are the ones with profit well above what the work alone would pay.
Sources
- Limited liability company (LLC)Internal Revenue Service · checked Sep 24, 2026
- S corporationsInternal Revenue Service · checked Sep 24, 2026