Should this client be an S-corp? Show them the whole picture.
Model the S-corp election the way it actually plays out: the self-employment tax saved against the payroll cost added, what the salary/distribution split does to the QBI deduction, and what a lower salary does to the retirement-contribution ceiling. Start from a reasonable-compensation estimate built on public BLS wage data, adjust it to your judgment, and hand the client a branded report. Deterministic math that runs on your own machine — no AI, no shared server.
Built by Piotr Nalepa, EA — a practicing Enrolled Agent, twenty years in tax practice.
- $49.99 · one time
- Federal · tax years 2025 & 2026
- Deterministic math — no AI
- Runs on your machine
- White-label deliverable
What you're actually buying.
The whole trade-off, not just SE tax
The S-corp pitch is usually 'save self-employment tax.' The real answer also moves the QBI §199A deduction, adds payroll cost and compliance, and changes how much the client can put into a retirement plan. The analyzer models all of it together and lands on after-tax wealth — the number the client actually keeps.
A reasonable-comp starting point
The tool builds a salary estimate from bundled, public-domain BLS occupational wage data and shows its work. It is an estimate and a planning aid — not a number verified or endorsed by the IRS. You adjust it to the facts of the engagement; determining and substantiating reasonable compensation remains the preparer's responsibility.
Reads the returns you already have
Drop in last year's Schedule C, Form 1120-S with the K-1, or the 1040 — the importer reads the figures in your browser and routes anything it's less sure about to a Review & Confirm panel. No retyping, and nothing is uploaded anywhere.
A branded deliverable in minutes
Side-by-side sole-prop versus S-corp results, the salary split modeled, and the assumptions stated — in a clean white-label report with your firm's logo and name throughout, generated locally.
An estimate, by design.
Any reasonable-compensation figure this tool produces is an estimate and a planning aid. It is not evaluated, verified, or endorsed by the IRS, and the tool does not establish reasonable compensation. The professional using the tool is solely responsible for determining and substantiating the compensation actually paid. The same notice appears in the app and on every report it generates.
Built so the return never leaves your machine.
Same architecture as every Nalepa Labs tool — the privacy is structural, not a policy promise.
How your data is handled- Parsed in your browser
- The PDF is read by code running on your own machine. It is never sent to a server — there is no server. Once you have the file, it runs with the network turned off.
- Wage data ships inside the file
- The BLS occupational wage tables the estimate draws on are public-domain data bundled into the tool itself — it never phones home to look anything up.
- Nothing is stored remotely
- The only thing saved locally is your acceptance of the license terms. Close the tab and the client's data is gone — there is no account and no cloud copy.
- Deterministic math, not AI
- The numbers come from rule-based federal tax math you can audit line by line — not an AI estimate, and not a shared server computing your client's return.
Who it's for.
- 01CPAs and EAs fielding the perennial 'should I be an S-corp?' question who want one consistent analysis instead of a fresh spreadsheet.
- 02Preparers whose Schedule C clients are growing into S-corp territory and deserve a real comparison, not a rule of thumb.
- 03Financial advisors who want the entity conversation grounded in numbers before sending the client to their tax professional.
- 04Firms moving into advisory work that need a fast, professional planning deliverable to lead with.
One tool. One price.
Buy it once and use it for every entity conversation. No subscription, no per-client fee, no account to manage.
No subscription. No per-client fee. Pay once, run it on the whole book.
- The full S-Corp vs. Sole Prop Analyzer, as a single self-contained file
- All 2026 tax-year updates included
- White-label — your firm's logo, name, and report by-line throughout
- Runs offline on your own machine; the client's return is never uploaded
Secure checkout via Stripe
Updates for later tax years are a small one-time fee — only if and when you want them. All sales are final. No refunds.
Outfitting a whole firm or want multiple seats? Tell us about your practice and we'll set you up. Contact us.
- How do I get it, and what does $49.99 include?
- It's a one-time $49.99 purchase. You get the full analyzer as a single self-contained file you run locally, white-labeled for your firm, with all 2026 tax-year updates included. There's no subscription and no per-client fee — run it on as many clients as you want. Updates for later tax years are a small one-time fee. All sales are final — no refunds.
- Does it tell me the client's reasonable compensation?
- No — it gives you a documented starting estimate built from public BLS occupational wage data, and you adjust it to the engagement. Reasonable compensation is a facts-and-circumstances determination that only the professional can make and substantiate. The tool frames every figure as an estimate, in the app and on every report.
- What exactly does it model?
- Federal taxes for tax years 2025 and 2026: self-employment tax versus the payroll taxes on an S-corp salary, the QBI §199A deduction under both structures and across salary levels, the retirement-contribution ceiling at each salary, and the resulting after-tax wealth side by side.
- Does it cover state taxes?
- Not in this version — the analysis is federal. State income tax, state payroll obligations, and entity-level state costs vary enough that they're best layered on by the professional. State modeling is on the roadmap.
- Which forms does the importer read?
- Text-based PDFs of Schedule C, Form 1120-S with Schedule K-1, and Form 1040. Everything the importer reads goes through a Review & Confirm panel before it touches the model; anything else can be entered manually. Scanned or image-only PDFs aren't supported.
- Does it use AI, or send my client's data to a server?
- Neither. The calculations are deterministic, rule-based tax math running entirely in your browser, on your machine. There is no AI estimating the numbers and no server — the client's data never leaves your computer.
- Is this tax advice?
- No. The analyzer is a planning tool for professionals. It shows the numbers; the professional makes the call. On-screen disclaimers say so, and use is governed by the end-user license.
- Can I put my own firm's branding on it?
- Yes. The tool is white-label — your logo, firm name, and report by-line throughout. Only the underlying software copyright remains ours.
Answer the S-corp question with numbers.
One tool, $49.99, yours for the whole book of business — the SE-tax, QBI, and retirement trade-offs side by side, in a branded report, with nothing leaving your machine.