If your LLC is making good money, someone has probably told you to “become an S-corp to save on taxes.” Sometimes that advice is worth thousands of dollars a year. Sometimes the extra payroll, filings and bookkeeping cost more than the tax you save. This guide explains how an S-corp election actually saves money, when it tends to make sense, and what it changes in your books.
LLC vs S-corp: they are not the same kind of thing
An LLC is a legal structure you form with your state. An S corporation is a tax classification. A single-member LLC is taxed like a sole proprietorship by default, and a multi-member LLC like a partnership. An eligible LLC can file IRS Form 2553 to be taxed as an S-corp instead, while staying an LLC under state law.
Where the tax savings come from
As a default single-member LLC, all of your net profit is subject to self-employment tax: 15.3% on 92.35% of your net earnings (12.4% Social Security up to the $184,500 wage base for 2026, plus 2.9% Medicare on everything).
As an S-corp, you split the money you take out into two parts:
- A reasonable salary, paid through payroll. Social Security and Medicare tax apply to it, split between the company and you, 15.3% in total.
- Distributions of the remaining profit. These are not subject to Social Security or Medicare tax.
Income tax is broadly similar either way, because salary and profit both end up on your personal return. The saving is the payroll tax you no longer pay on the distribution portion.
A worked example
| Single-member LLC | LLC taxed as S-corp | |
|---|---|---|
| Net profit before owner pay | $120,000 | $120,000 |
| Owner salary | n/a | $60,000 |
| Self-employment / payroll tax | $16,955 | $9,180 + $42 FUTA |
| Extra costs (payroll service, 1120-S return) | $0 | about $2,500 |
| Estimated difference | about $5,200 a year in favor of the S-corp | |
Change the numbers and the answer changes. At $50,000 of profit with a $40,000 salary, the saving is small and the extra costs can wipe it out. That is why it pays to run your own numbers instead of following a rule of thumb.
What counts as a reasonable salary?
The IRS expects an S-corp owner who works in the business to take reasonable compensation: roughly what the company would pay someone else to do the same work. Factors include your role, hours, experience, industry and location. Paying yourself an unrealistically low salary to maximize distributions is the most common S-corp mistake, and the IRS can reclassify those distributions as wages, with back taxes and penalties.
The extra work an S-corp brings
- Payroll for yourself: withholding, quarterly Form 941, annual Form 940, a W-2 and state payroll filings.
- A separate business tax return, Form 1120-S, due March 15 for calendar-year companies, plus a Schedule K-1 for each owner.
- Cleaner books: salary, distributions, owner reimbursements and shareholder basis must be tracked separately.
- State rules: some states tax S-corps directly. California, for example, charges a 1.5% franchise tax on S-corp net income.
When an S-corp election usually does not make sense
- Profit is modest, so a reasonable salary would take most of it.
- Income is irregular and you cannot commit to steady payroll.
- Your books are behind. You cannot prove reasonable compensation, or split salary from distributions, with messy records.
How to elect S-corp status
File Form 2553 signed by all owners. To take effect for the current tax year, it is generally due no more than 2 months and 15 days after the start of that year (March 15 for a calendar year). Relief for late elections is sometimes available. Talk to your tax preparer before filing, because the election affects your whole tax picture.
Key takeaways
- An S-corp saves Social Security and Medicare tax on distributions, not on your salary.
- You must pay yourself a reasonable salary through payroll.
- Extra costs (payroll, a separate return, state taxes) can outweigh savings at lower profit levels.
- Clean monthly books are essential once you elect.
Once you elect, our payroll management and monthly bookkeeping services keep salary, distributions and filings in order.
Frequently asked questions
Is an S-corp better than an LLC for taxes?
Not always. An LLC taxed as an S-corp can save self-employment tax on profit paid out as distributions, but it adds payroll, a separate tax return and sometimes state taxes. It tends to pay off only once profit comfortably exceeds a reasonable salary.
How much can I save with an S-corp?
It depends on your profit, reasonable salary and extra costs. For example, $120,000 of profit with a $60,000 salary saves roughly $5,000 a year in payroll taxes after typical costs. Use the free calculator with your own numbers.
Can an LLC be taxed as an S-corp?
Yes. An eligible LLC files Form 2553 to elect S-corp tax treatment while remaining an LLC under state law.
What is the deadline to elect S-corp status?
Generally no more than 2 months and 15 days after the start of the tax year the election should apply to, which is March 15 for a calendar-year business. Late-election relief may be available.
