For the gaps your payroll system leaves.
Twenty-five payroll calculators and three compliance engines, covering all fifty states. Deterministic rules, every figure traceable to the CFR section or IRS instruction that produced it. Payroll compliance delivered without the guesswork.
No chatbot is guessing at your withholding. The logic is written down, and so is the citation.
- Calculators live
- 25Calculators live
- States covered
- 50States covered
- Treaty countries
- 50+Treaty countries
Potential compliance check required: ignore the bonus in the regular rate and you underpay this employee $22.34 this week.
Calculation method per 29 CFR 778.209. Real math, running in your browser — the same routine the full tool uses.
100% open logic
Every rule links directly to the specific CFR section or IRS instruction that produced it. Nothing sits behind a black box.
Export-ready audit trails
Download the full breakdown the moment you run it — inputs, intermediate math, citation, timestamp.
Zero AI guesswork
Pure rule-based calculation. The same inputs return the same figure in March and in November — the only property a reviewer cares about.
Three steps from a messy scenario to a record you can hand to an auditor.
- 01
Enter the scenario
Country, visa, dates, income type. The wizard asks only the questions that change the answer, and skips the ones that don’t.
- 02
Read the rule that decided it
Substantial Presence arithmetic, the treaty article and its cap, the form that follows. Shown before you commit, not buried in a PDF afterwards.
- 03
Export the binder
IRS form, cover sheet, timestamp, and the inputs that produced it. Still legible in eighteen months when someone asks why.
For when an estimate isn’t good enough.
Calculators answer a question. Engines produce a documented determination with a record behind it.
NRA Treaty Wizard
Substantial Presence and treaty eligibility in one pass. Returns the form path — 8233, W-8BEN or NRA W-4 — with warnings surfaced early. 50+ treaty countries.
Run the wizard →Multi-State Nexus
Where a remote employee actually triggers a state obligation — physical presence, reciprocity agreements, and the registration that follows.
Launch assistant →Garnishment Priority
Three orders, one paycheck, and a ceiling. Resolves levies against child support under federal CCPA priority and shows the disposable-earnings math.
Launch engine →Twenty-five calculators. Most of them free.
No sign-up wall on the free ones. Nothing you enter leaves your browser.
The things people ask before they trust a number.
Still stuck? support@yourpaybot.com reaches a person who has run payroll.
Are the free calculators actually free?+−
Yes. No account, no email gate, no trial clock. The NRA Wizard is free too — it asks for an email at the end because that is where the completed form gets sent, not to unlock anything. Two engines sit behind the Pro plan because they cost real time to maintain, and universities pay for volume and record-keeping.
Does my data leave the browser?+−
Not for the calculators. The payroll audit tool parses your export locally — the file is never uploaded. Wizard determinations are stored only if you save them to your vault, and you can delete them.
Is there an LLM deciding my withholding?+−
No. Every engine is rule-code with a citation attached. The same inputs produce the same output on Tuesday as they did in March, which is the only property that matters when someone reviews the file later.
Can I use the output as tax advice?+−
It is a documented determination, not legal or tax advice. Most teams use it as the working paper behind a decision their own policy owns — which is exactly what it was built to be.
How current are the 2026 figures?+−
Brackets, standard deductions, FICA wage bases and the OBBBA overtime and tips deductions are on the 2026 tables — federal figures from Rev. Proc. 2025-32, the Social Security wage base from SSA. They live in one versioned table every calculator reads, and a build-time guard fails the release if a tool drifts from it or if the table drifts from the source ledger.