S-Corp Strategy
S-Corp vs Sole Proprietor — Where the Savings Begin
Sole prop is the cheapest way to start. The S-Corp election starts paying off once net profit clears the $50K–$70K band — and the gap widens fast from there.
The headline difference
A sole proprietor pays 15.3% self-employment tax on essentially every dollar of net profit (capped at the Social Security wage base for the SS portion). An S-Corp owner pays FICA only on their W-2 salary; everything taken as a distribution skips self-employment tax entirely.
The $50K–$70K threshold
Below ~$50K, the cost of payroll, an 1120-S return, and S-Corp compliance roughly equals the SE tax savings. Between $50K and $70K you start coming out ahead. Above $70K the savings compound dramatically. Numbers below assume a defensible salary derived from our standard 40%-of-profit heuristic (floor $40K, cap $150K) and current Social Security wage-base rules — they are estimates only.
| Net profit | Sole prop SE tax | S-Corp FICA on salary | Estimated annual savings |
|---|---|---|---|
| $50,000 | ~$7,065 | ~$6,120 | ~$945 |
| $70,000 | ~$9,890 | ~$6,120 | ~$3,770 |
| $100,000 | ~$14,130 | ~$6,120 | ~$8,010 |
| $150,000 | ~$19,645 | ~$9,180 | ~$10,465 |
| $200,000 | ~$22,520 | ~$12,240 | ~$10,280 |
Want your real number? Use the savings calculator.
Side-by-side
| Feature | Sole proprietor | S-Corp (LLC + S election) |
|---|---|---|
| Setup | None — start working | Form an LLC/corp + file Form 2553 |
| Liability protection | None — personal assets at risk | Yes — through underlying LLC/corp |
| Federal return | Schedule C on Form 1040 | Form 1120-S + K-1 |
| Self-employment tax | 15.3% on 92.35% of net profit | FICA only on owner's W-2 salary |
| Owner payroll required | No | Yes — reasonable W-2 wages |
| Cost to operate | Minimal | Payroll + 1120-S + compliance (~$2–4K/yr) |
| Audit profile | Higher (Schedule C is audited often) | Lower for the same income level |
| Sweet spot | Net profit under ~$50K | Net profit $70K+ with active owner |
When sole prop is still the right call
- Side hustle netting under $30K
- First year of a new business — wait until profit stabilizes
- Highly seasonal income that may not recur
- You don't want the overhead of payroll and an annual 1120-S
When to make the switch
- Net profit cleared $70K and is trending up
- You're on track to net $50K+ this year and want to start the election now
- You need liability protection and were already going to form an LLC
- You can pay yourself a reasonable salary and run real payroll
How GuidedLedger handles the transition
We coordinate the LLC formation (or use your existing one), file the S-Corp election, set up payroll, and run your bookkeeping in a way that cleanly separates salary from distributions. Most clients move from sole prop to operating S-Corp in 3–4 weeks.
Frequently Asked Questions
I'm a sole prop now — do I need to form an LLC first?
Yes. The S-Corp election is for a registered entity. You'll typically form an LLC, get an EIN, and file Form 2553. We handle the whole sequence in onboarding.
What about the qualified business income (QBI) deduction?
Both sole props and S-Corps can qualify for the 20% QBI deduction. S-Corp salary doesn't count as QBI, so the deduction is calculated on the distribution portion only.
Keep reading
- S-Corp savings calculator — Plug in your numbers.
- S-Corp vs LLC — If you already have an LLC.
- How to elect S-Corp status
- Reasonable compensation