Best Outsourced Payroll Providers UK 2026: Full Comparison Guide

Chandraketu Tripathi

Finance Editor, Kaeltripton

Published 4 Apr 2026

Last reviewed 4 May 2026

✓ Fact-checked

By Chandraketu Tripathi | Updated April 2026

Choosing the right outsourced payroll provider is one of the most consequential operational decisions a UK business makes — errors in payroll damage employee trust and attract HMRC penalties, while the wrong provider adds cost without reducing compliance risk. This guide compares all major UK outsourced payroll providers by size suitability, cost, features, and quality standards to help you make the right choice in 2026.

Our Verdict

For most UK businesses: ask your accountant first — they offer bureau payroll at competitive per-payslip rates and already know your business. For dedicated bureau services: IRIS is the top-rated option for small businesses. Moorepay is best for businesses wanting HR advisory bundled with payroll. ADP leads for 25+ employees needing enterprise-grade processing. Always request CIPP PAS certification as a quality indicator.

Best Outsourced Payroll Providers UK 2026 — Full Comparison

Provider	Min Employees	Cost (per emp/month)	CIPP Certified?	HR Advisory?
Your accountant	Any	£2–6/payslip	Practice-dependent	Not typically
IRIS Payroll Bureau	Any	£4–8	Via IRIS	❌ (separate)
Moorepay	Any	Quote-based	✅	✅ Bundled
PayFit	1+	Quote-based	Working toward	Basic
ADP Managed Payroll	25+	£5–10	✅ ISO certified	Via ADP HR
Dataplan	Any	£4–8	✅ CIPP PAS	Limited
Cintra	50+	Quote-based	✅	Via Cintra HR
Ceridian/Dayforce	100+	Quote-based	✅	✅ Dayforce HCM
MHR (iTrent)	50+	Quote-based	✅	✅ HR platform

CIPP Payroll Assurance Scheme: Why It Matters

The CIPP Payroll Assurance Scheme (PAS) is a voluntary quality standard for UK payroll providers, introduced by HMRC and the Chartered Institute of Payroll Professionals (CIPP). Providers holding PAS certification have been independently assessed against HMRC compliance standards, data security requirements, and professional conduct criteria. It is the closest thing to a regulated quality standard in the UK payroll bureau market. When evaluating providers, always ask: 'Are you CIPP PAS certified?' — and be cautious of providers that cannot or will not answer.

The True Total Cost of In-House vs Outsourced Payroll

Source: acenteus-cca.com, whichpayroll.com. Illustrative for 25-employee business. April 2026.
Cost Component	In-House (25 employees)	Outsourced (25 employees)
Payroll software	£500–2,000/year	Included
Finance/HR staff time (5h/month @ £25/h)	£1,500/year	~0
Training and CPD	£200–500/year	Provider responsibility
HMRC penalty risk	Your full responsibility	PI insurance covers provider errors
April legislative updates	Your responsibility to apply	Provider applies automatically
Bureau fee	N/A	£1,200–3,000/year (£4–10/emp/month)
Total annual cost	£2,200–4,000+	£1,200–3,000

Frequently Asked Questions

Who are the best outsourced payroll providers in the UK?

The best UK outsourced payroll providers depend on your business size and needs. For 1–25 employees: IRIS Payroll Bureau (top-rated), PayFit (modern cloud), and your accountant's bureau service. For 25–100 employees: Moorepay (HR + payroll combined), ADP, and Dataplan. For 100+ employees: Cintra, Ceridian/Dayforce, and MHR. Source: whichpayroll.com (March 2026).

How do I switch outsourced payroll providers UK?

The cleanest time to switch is at the start of a new tax year (April). Your new provider needs year-to-date payroll data, employee records, pension scheme details, and current tax codes from the outgoing provider. Most providers offer managed transitions. Allow 4–6 weeks. Confirm your data is transferred correctly by running the first two pay runs in parallel with your outgoing provider.

What should I ask an outsourced payroll provider UK?

Key questions: Are you HMRC-recognised for RTI filing? What does your professional indemnity insurance cover? Are you CIPP Payroll Assurance Scheme certified? How do you handle employee queries directly? What is your SLA for processing pay changes? How do you communicate April legislative updates? What are all the fees — setup, per payslip, P11D, CIS? Can I see a sample payslip and FPS confirmation?

Does outsourced payroll include auto-enrolment pensions?

Most outsourced payroll providers include basic auto-enrolment — assessing eligibility, enrolling workers, and calculating contributions. However, the extent of pension management varies. Some providers include NEST or People's Pension data submissions in their standard fee; others charge extra. Always confirm pension management scope before signing.

What is the minimum number of employees to outsource payroll UK?

There is no minimum — PayFit accepts any size business, as does your accountant's bureau service. Dedicated bureaux like ADP require 25+ employees. The economic question is whether outsourcing saves more time and compliance risk than it costs. For businesses with 1–5 employees on simple salaried payroll, self-service software (BrightPay, Xero Payroll, from £84/year) may be sufficient and cheaper.

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Disclaimer: Prices change — verify with providers. Sources: AccountingWEB, IRIS, TaxCalc, Digita, CCH, InfoTrack, Redbrick Solutions, Hoowla, Osprey, assetpanda.com, Freshservice, whichpayroll.com, expertsure.com, HMRC, FCA. April 2026.