Tools that pay for themselves.
Every calculator on this site is free and stays free. Paying is for the output — employee-level detail, a saved record of what you ran, and documents you can hand to whoever asks.
A calculation you can still explain in eighteen months.
Run a register through the audit and every flagged row names the employee, so you act on the exception instead of counting it. Save any calculator run with the inputs that produced it, and export it as a dated, branded PDF.
Pro does not gate a single calculator, and it does not include the NRA wizard — that is free for individuals and licensed separately to institutions.
The maths costs nothing.
No sign-up wall, no trial clock, and nothing you type leaves your browser.
Twenty-five calculators
Gross-up, overtime, garnishment, retro pay, final paycheck, multi-state nexus and twenty more. Every one of them open to anyone.
Explore calculations →Three compliance engines
Payroll audit, 941 reconciliation, worker classification. Free to run — Pro is what puts a name on a flagged row.
Run the audit →The NRA wizard
A treaty determination and a completed 8233, W-8BEN or W-4, emailed to you. Free for individuals. No card, no account.
Start the wizard →For universities and large employers.
Volume NRA determinations with invite management, a document vault, expiration alerts and a full audit trail. A separate product from Pro.
Need custom volume pricing or white-label documents? Contact us
An audit binder, not just a calculation.
Every determination produces a complete document set: the IRS form, a branded employer cover page, and a timestamped record of the inputs and treaty logic that led to it.
- Defensible if a tax authority asks how you reached a conclusion
- Stored in your vault — search by employee, country, or year
- Auto-flags expiration dates so you know when to redetermine
This packet contains a completed IRS Form 8233 for the employee named above. The form was generated using YourPayBot's NRA Tax Wizard, which determines the correct tax treaty article, withholding rate, and income cap based on the employee's country of tax residence, visa type, and income classification.
- 1.Review the attached form for completeness and accuracy.
- 2.Verify the employee's identity (passport, visa) matches the information on the form.
- 3.Sign Part IV (Withholding Agent) on page 2 of Form 8233. Your signature is required for the form to be valid.
- 4.Apply the treaty withholding rate to the employee's wages starting from their first paycheck.
- 5.File the form with your payroll records. Forward a copy to the IRS within 5 days of signing (see IRS instructions).
- 6.Set a reminder: treaty benefits may expire. Track the benefit period end date.
YourPayBot automates NRA tax determinations for universities and employers. Treaty lookup, form generation, document vault, and expiration alerts included. Plans start at $249/year.
The actual cover page that prepends every Form 8233 / W-8BEN / W-4 PDF generated by the wizard. Rendered with sample data; your output uses your institution's name and the employee's real values.
Common questions
What is actually free?
All twenty-five calculators, all three compliance engines, and the NRA wizard for individuals. No account, no trial clock. Payroll Pro does not gate a single calculation — it changes what you can take away from one.
What's the difference between Payroll Pro and Institutional plans?
Payroll Pro ($9/mo) is for an individual payroll professional: employee-level detail in the audit tool, saved calculation history, branded PDF export, and the Excel audit workbook. Institutional plans are a separate product for universities and employers running NRA compliance at volume, with a team dashboard, employee roster, and document vault. The NRA wizard is free for individuals and is not part of Pro.
How does this compare to enterprise NRA compliance software?
Enterprise NRA compliance platforms cost $5,000–$10,000/year and require lengthy onboarding. YourPayBot delivers the same treaty logic, form generation, and audit trail — starting at $249/year with instant setup.
What's included in every institutional plan?
All institutional plans include team invite management, a document vault with timestamped audit trail, automatic 30-day and 7-day expiration alerts, branded employer cover pages, and the full NRA determination engine (treaty lookup, visa classification, form generation).
Are the calculators accurate enough to rely on for payroll?
The calculators implement published FLSA, IRS, and tax treaty rules. They're designed by payroll professionals for payroll professionals. That said, no software is a substitute for professional judgment — always confirm unusual situations with your CPA or legal counsel.
Can I cancel anytime?
Yes — all plans can be cancelled from your account settings. No long-term commitment.