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Set up payroll with a checklist
Ops & admin automation · checked 2026-10-17
Claude drafts a payroll setup checklist from your situation, you complete it in OnPay, and you use Wolfram in Claude only to check arithmetic on estimates before verifying inside OnPay.
Independent review. IonBin has no partnership with any tool on this page and was not paid for this page. Our evaluation is our own, based on public documentation and our research. Product names are trademarks of their owners and are used for identification only. How disclosure works.
Goal
Launch payroll without missing a registration or setting.
Connects through: MCP
Not advice
IonBin provides general information and software comparisons, not tax, legal, accounting or financial advice. Tax and legal rules vary by situation and jurisdiction; consult a qualified professional (CPA, enrolled agent or attorney) before acting.
AI tools can make mistakes. Verify every figure against the original documents and official IRS or state guidance before filing or signing.
Redact Social Security numbers, account numbers and EINs before uploading documents to any AI assistant, and check its data-retention settings. Upload originals only to the filing or signing software.
Verify all figures inside OnPay and run payroll yourself
Human step
Confirmed
Confirmed means the vendor documents it (linked). It doesn't mean IonBin has tested it. AI-platform and human steps need no source.
Human approval
You verify everything inside OnPay before running payroll.
Watch out for
Keep the human approval step: You verify everything inside OnPay before running payroll.
Starter prompt
Goal: Launch payroll without missing a registration or setting. Tools involved: Claude, Wolfram. Your part: drafts a setup checklist (registrations, pay schedule, deductions to confirm); checks arithmetic on estimates. Work step by step, show me each draft or proposed change, and wait for my approval before anything is sent, published, signed, filed or changed in a live system.
Assembled from this page’s goal and steps. Paste it into your AI platform and adjust it to your situation.
Every MCP and API step is documented for this platform.
ChatGPT
Confirmed
Every MCP and API step is documented for this platform.
Gemini
Confirmed
Every MCP and API step is documented for this platform.
Perplexity
To verify
Wolfram: pairing not named in vendor docs
Computed from the MCP and API steps only: "Confirmed" needs the tool's docs to name the platform and the platform to support the connection. Browser, upload and human steps work from any platform.
What we checked
OnPay lists payroll at $49 a month plus $6 per worker (checked 2026-10-17). OnPay says every plan includes W-2s, 1099s and year-end filings, unlimited pay runs, and federal, state and local tax filings. It has no MCP server, and its API is for approved partners, so setup happens in OnPay itself.
Wolfram Cloud MCP (https://agenttools.wolfram.com/mcp) needs no sign-in and costs nothing, per Wolfram. Use it to check arithmetic on your own estimates, such as gross-to-net for a sample pay period. OnPay’s own calculations are the ones that count.
Accounting integrations. We didn’t check which accounting tools OnPay connects to. Look at OnPay’s integrations page if you need payroll to post to your books.
Set it up
Ask Claude for a setup checklist based on your situation: registrations to confirm, pay schedule, deductions and benefits.
Work through it in OnPay and tick items off as you go.
Use Wolfram in Claude to sanity-check sample calculations.
Run a test payroll review in OnPay before the first real run.
