For enterprises and group structures
Payroll that fits
your infrastructure.
HMRC-recognised payroll for organisations that need deep integration, multi-entity support, a complete audit trail, and the flexibility to adapt where standard software does not quite fit.
Integrates into your stack, not the other way round
Full REST API with webhook events. Push employee data, trigger payroll runs, and pull results directly from your HRIS, ERP, or finance system without disrupting what already works.
Scales without a redesign
Add subsidiaries, onboard an acquisition, grow headcount: each employer scheme is isolated and independently configurable. The same API and integration handles 50 employees or 5,000.
A reliable compliance source of truth
Every HMRC submission confirmed and stored. Every change timestamped and auditable. Your finance and legal teams have a complete, exportable record for any payrun, any period.
Custom where your setup requires it
Custom pay elements, bespoke export formats to match your chart of accounts, dedicated onboarding, and a named account manager. Standard where possible, tailored where it matters.
Trusted by UK businesses and accountancy firms
Deep API integration
Your systems stay in charge.
We handle payroll.
Enterprise payroll sits inside a larger tech stack: HRIS, ERP, finance system, workforce management platform. The Moonworkers API lets you push employee data, trigger payroll runs, and pull results without building a separate workflow or asking people to use another interface.
Full REST API covering every payroll operation
Create employers, manage employees, trigger payruns, retrieve payslips and pension data: every action available programmatically with consistent, versioned endpoints.
Webhook events on every status change
Get notified when a payrun is finalised, an FPS is acknowledged, or an error occurs. No polling, no cron jobs checking status manually.
Full sandbox environment for development
Build and test your integration against a complete staging environment before go-live. Same data model, same API, no production risk.
Request body
Response
201 CreatedPay run summary — run_9x4wlk82
£7,583.33
Gross
£1,204.60
PAYE
£721.14
NI
£5,657.59
Net pay
Built to scale
Add entities. Grow headcount.
Nothing breaks.
Acquisitions, new subsidiaries, rapid headcount growth: each employer scheme in Moonworkers is isolated, separately reportable, and independently configurable. The same API and the same integration scales from 50 employees to 5,000 without a redesign.
Unlimited employer schemes under one account
Run multiple subsidiaries or group entities with separate PAYE references, independently managed but visible and reportable from a single login.
Volume pricing that adjusts automatically
Per-payslip cost decreases as total volume increases across all schemes. No renegotiation, no contract amendment, no manual review.
Migration support from existing systems
Structured onboarding process to migrate employee records, historical payslips and scheme configuration. No gap in your payroll history.
Request body
Response
201 CreatedCompliance and reliability
HMRC recognised.
Auditable. Always on.
For enterprise payroll, compliance is not optional and audit trails matter to finance, legal, and HR. Every submission to HMRC is confirmed and stored. Every change is timestamped with who made it. The complete record is exportable and accessible via the audit API.
FPS and EPS confirmed and stored per payrun
HMRC acknowledgements retained for every submission. Accessible on demand for internal audit, HMRC query, or finance reconciliation.
Complete change history, queryable via API
Every pay amendment, who made it, when, and the before and after values. Accessible programmatically so your compliance team can build the reports they need.
99.9% uptime SLA
Payroll runs on time, every time. Month-end is not when you want to find out your payroll provider has an outage.
Response
200 OKPay breakdown
Standard where possible, tailored where it matters
Custom pay elements.
Your format. Your team.
Most enterprise requirements fit the standard product. Where they do not, Moonworkers supports custom pay element codes, bespoke export formats mapped to your chart of accounts, and a dedicated account team for anything that needs more than documentation.
Custom pay elements and deduction codes
Define non-standard earnings and deduction types that appear correctly on payslips, in exports, and in the payroll journal.
Accounting export in your format
Payroll journals formatted to match your chart of accounts and nominal codes. No reformatting by your finance team after every run.
Named account manager and direct support
A dedicated contact, direct Slack channel, and SLA-backed response time for any issue that needs resolution faster than a support ticket.
Response
200 OKContribution breakdown
Auto-enrolment status
enrolledYes
Eligible
No
Opted out
None
Postponement
REST
API with webhooks
99.9%
Uptime SLA
100%
HMRC RTI acceptance rate
0
Entity limit
Our customers say it best.
From sole traders to growing enterprises, teams across the UK rely on Moonworkers to run payroll without the headache.
JC Puget
Maison Puget
“The best payroll company for my business. Highly recommend.”
S Djakiodine
Euroaccounting
“We have been using Moonworkers for quite some time and compared to other software in the market, we found it very simple to use and excellent. Moreover, the customer service is great.”
Shenaz Gaffar
Printberry
“Moonworkers has absolutely been a lifesaver for me and my business. Moonworkers customer service is 100% there always there to help. They constantly taking on feedback to make it better. If you are looking to make life easier, then this is it !!!”
Joe Barber
The Barn
“Fantastic onboarding process from the team. A really user friendly website and system. When I have asked for any assistance or help, the team have helped, made changes and even updated the system for my requests!”
James Berry
CJLS Tech
“From the outset the onboarding to Moonworkers was 100% smooth, even any hints of a problem were speedily fixed and we have been running smoothly since then, we have never needed to reach out to support post onboarding, and that's a testament to its own.”
Suzy Kerton
Zyla Accountant
“Moonworkers software is great for HR, payroll, benefits & more and it is amazing to have it all in one platform. The automation saves so much time every month and the team offer great customer support whenever you have a query. Highly recommend!”
Amrit Gill
Hayachi
“Incredibly powerful HR and Payroll platform, we've previously been held back by our accountant on having a truly flexible workforce but no more! With Moonworkers we can hire the skills that we need with exceptional efficiency and the HR platform makes it a well-rounded tool.”
Row Laurence
Braid
“The Moonworkers platform has been a massive help getting me set up with my first few employees and making sure I had all the right boxes ticked – the team have also been super helpful and responsive any time I had questions or there was something I didn't understand.”
Pricing
Fair, flexible pricing.
No hidden fees.
Pay only for what you use, no base fee, no setup cost. Pricing adjusts automatically as your usage grows.
Monthly Payroll · Employer
Payroll that scales
with your team.
Pay per payslip with volume pricing that scales with your team. A minimum fee applies on smaller plans — no setup cost, no lock-in, cancel anytime.
- Full PAYE, NI & pension auto-enrolment
- Automated RTI (FPS & EPS) to HMRC
- Variable hours & 52-week holiday pay
- NEST, Smart & People's Pension integration
- Accounting software integrations
- Payslip generation & delivery
Get started today
HMRC-compliant payroll,
built for every use case.
From your first payslip to a full API integration, Moonworkers handles the compliance, the RTI submissions, and the calculations, so you can focus on your work.