LLC vs S-Corp vs Sole Proprietor Tax Comparison (2025)
Compare the tax burden of operating as an LLC/sole proprietor vs. an S-Corporation. Find out if electing S-Corp status saves you money.
Must be "reasonable compensation" per IRS
LLC vs S-Corp Comparison
$5,775
Annual Net Savings with S-Corp
$16,955
LLC SE Tax
$9,180
S-Corp Payroll Tax
$7,775
Gross SE Tax Savings
$2,000/yr
Est. S-Corp Admin Cost
Electing S-Corp status saves you $5,775 per year after admin costs.
Analysis & insights
Your llc total tax is $16,955, based on the inputs above. Tax outcomes drive the math behind nearly every other financial decision — savings rate, affordability, retirement.
Quick estimate
This calculator uses just a few inputs. Adjust them to see how each variable shifts the answer.
Risk & benchmark gauge
Current band
Low
Llc Total Tax: $16,955
Industry benchmarks
- Llc Total Tax$16,955
- Scorp Total Tax$9,180
- Annual Savings$7,775
- Net Savings$5,775
- Distributions$60,000
Key insights
Pre-tax contributions reduce taxable income
Every dollar to 401(k), HSA, or traditional IRA reduces taxable income at your marginal bracket — typically 12-32% federal.
Sensitivity testing
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This tool is for informational purposes only and does not constitute legal advice. Settlement values vary widely. Consult a licensed attorney for advice specific to your situation.
What is LLC vs S-Corp?
The most common confusion in small business structuring is that LLC and S-Corp are alternatives. They are not the same kind of thing. An LLC is a legal entity created under state law; an S-Corp is a federal tax election. An LLC can elect to be taxed as an S-Corp and remain an LLC in every legal respect.
That distinction matters because the two decisions are separate. Forming an LLC changes your liability exposure and your legal identity. Electing S-Corp taxation changes only how the profits are taxed — specifically, whether all profit is exposed to self-employment tax or only the portion paid as salary.
So the real question is rarely "LLC or S-Corp". It is "should my LLC make the S-Corp election", and the answer turns almost entirely on profit level, because the election has fixed annual costs that only pay for themselves above a threshold.
The formula — how to calculate LLC vs S-Corp
- 92.35%
- = the portion of net earnings subject to self-employment tax for a sole proprietor or default LLC
- Reasonable salary
- = the market wage for services performed — required before taking distributions
- Compliance cost
- = payroll service, Form 1120-S preparation and state fees, typically $1,500–$3,000 a year
Both structures pay identical federal income tax on the same total profit. The election affects payroll and self-employment tax only.
Step-by-step example
- 01A design studio operates as a single-member LLC with $140,000 of net profit.
- 02Default LLC taxation: SE tax on $140,000 × 92.35% = $129,290, at 15.3% ≈ $19,781.
- 03With an S-Corp election and a $75,000 reasonable salary: payroll tax = $75,000 × 15.3% ≈ $11,475.
- 04The remaining $65,000 is distributed without payroll tax.
- 05Gross saving ≈ $19,781 − $11,475 = $8,306.
- 06Subtract compliance costs of roughly $2,000: net benefit ≈ $6,300 a year.
- 07Now run the same business at $60,000 profit with a $45,000 salary: gross saving falls to about $1,600, and after $2,000 of compliance cost the election actually loses money.
What each thing actually is
Legal entity versus tax election
| LLC | S-Corp election | |
|---|---|---|
| What it is | A legal entity formed under state law | A federal tax classification |
| Created by | Filing articles of organisation with the state | Filing Form 2553 with the IRS |
| Provides liability protection | Yes | No — protection comes from the underlying entity |
| Default taxation | Sole proprietor (single member) or partnership (multi-member) | Pass-through with a required owner salary |
| Self-employment tax | On all net profit | On salary only |
| Owner payment method | Owner draws | W-2 salary plus distributions |
| Separate federal return | No for single-member by default | Yes — Form 1120-S |
A corporation can also elect S-Corp status. Most small businesses reach it via an LLC because LLC governance is considerably lighter.
Where the break-even sits
Because compliance costs are fixed and the tax saving scales with profit, the election has a clear threshold below which it is not worth making.
The saving is roughly 15.3% of whatever profit exceeds a reasonable salary. If a defensible salary consumes most of your profit — which is typical at lower profit levels, since the salary must reflect the market value of your work — there is little left to shift, and the saving is small.
Approximate annual benefit by profit level
| Net profit | Illustrative salary | Gross saving | After ~$2,000 costs |
|---|---|---|---|
| $50,000 | $40,000 | ≈ $1,530 | Negative — not worth it |
| $80,000 | $55,000 | ≈ $3,825 | ≈ $1,800 |
| $120,000 | $70,000 | ≈ $7,650 | ≈ $5,650 |
| $180,000 | $95,000 | ≈ $10,900 | ≈ $8,900 |
| $250,000 | $120,000 | ≈ $14,600 | ≈ $12,600 |
Illustrative only. Salaries shown are examples, not recommendations — the correct figure is the market rate for your services. Savings above the $184,500 wage base accrue at 2.9% rather than 15.3%.
You are not locked in
A default LLC can elect S-Corp treatment later as profits grow. Starting simple and electing when the numbers justify it is a perfectly reasonable path, and avoids paying for a structure before it earns its keep.
What the election costs you beyond money
The administrative burden is the part most owners underestimate. Running payroll means real W-2 wages, tax withholding, quarterly employment tax filings and year-end forms — on a schedule, whether or not the business had a good month.
A separate Form 1120-S is required, and it is due earlier than the personal return. Late filing penalties for S-Corps are assessed per shareholder per month, which makes missed deadlines disproportionately expensive for a small entity.
Corporate formalities also matter more. Commingling funds, skipping payroll during lean months, or paying yourself irregular amounts that look like draws rather than wages all weaken the position if the return is examined.
For an owner who values simplicity, a few thousand dollars of annual saving may not justify the ongoing obligation. That is a legitimate conclusion, not a failure to optimise.
Ownership and eligibility limits
S-Corp status carries restrictions that an LLC does not. There is a cap of 100 shareholders, shareholders must generally be US citizens or residents, and only one class of stock is permitted — meaning profits must be distributed strictly in proportion to ownership.
That last restriction is the one that most often rules it out. LLCs can allocate profits flexibly, which is common where partners contribute unequal capital and effort. An S-Corp cannot: a 60/40 owner split means 60/40 distributions regardless of who did the work.
Non-resident owners and entity owners are generally ineligible, so businesses with foreign partners or a holding structure typically cannot elect.
Key considerations
- Form the LLC first for liability protection; treat the S-Corp election as a separate decision made on profit.
- Get real quotes for payroll and 1120-S preparation before deciding — the break-even depends on your actual costs.
- Check your state. Some impose franchise taxes or minimum fees that materially reduce the benefit.
- The election deadline is generally two months and fifteen days into the tax year it takes effect; late elections require relief procedures.
- Multi-member LLCs wanting flexible profit splits should think carefully — the one-class-of-stock rule forbids it.
- Model the QBI interaction if income exceeds the 2026 thresholds of $197,300 single or $394,600 joint.
- Liability protection depends on maintaining separation between business and personal finances under either structure.
Common mistakes to avoid
- Believing LLC and S-Corp are mutually exclusive — an LLC can elect S-Corp taxation and stay an LLC.
- Expecting the S-Corp election to reduce income tax. It affects payroll and self-employment tax only.
- Electing at a profit level where compliance costs exceed the saving.
- Assuming the election provides liability protection. That comes from the entity, not the tax classification.
- Overlooking state-level franchise taxes and minimum fees.
- Electing with multiple members who need disproportionate profit allocations, which the one-class-of-stock rule prohibits.
- Missing the Form 2553 deadline and losing the election for a full tax year.
Frequently asked questions
Sources & references
Written and fact-checked by the CalcProLabs Editorial Team against IRS entity classification guidance. Read our calculation methodology and editorial policy.
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