APIs · MCP · White-label
Build your own agentic payroll system and sell it to your clients
US & Canadian payroll APIs, MCP tools, employee portals, and white-label branding. You own the client relationship and pricing; we run the compliance engine behind the scenes.
Ready to launch?
Create a developer account ($49/mo + included monthly API credits) or sign in to manage keys, billing, and provisioned companies. See pricing.
Create developer accountSign inView pricing — no signup requiredBrowse API docs — no signup requiredWhite-label solutions
Ship payroll under your brand — we white-label it for you
For software platforms and accounting firms: keep your logo, domain, and client pricing. We host the admin, employee portal, tax engine, and MCP/REST APIs. Prefer not to build? We can design and launch a branded stack on your behalf.
- Custom branding, domains, and firm Spaces
- Multi-tenant companies with scoped API keys
- US & Canada compliance, pay runs, and tax forms included
Revenue opportunity
See how much you can make building & selling payroll
Use Payroll Shack APIs as the engine behind your own branded payroll product — then charge your client firms per employee, per month. Adjust the sliders to match your practice.
Accounting practices, PEOs, or vertical SaaS customers
Typical white-label payroll: $6–$15 PEPM
Gross monthly revenue
$4,860
540 employees × $9/mo
Gross annual revenue
$58,320
Before your delivery & support costs
Your platform cost with Payroll Shack: about $4/mo subscription plus usage-based API credits (often well under 1% of revenue at this scale).
Illustrative only — not tax or financial advice. Your pricing, mix, and costs will vary.