Payroll

Payroll for a small business: how to set it up and run it (2026/27)

Last checked 19 October 2026 · 7 min read · By James Whitfield, EmployerCalculator Editorial
Contents (6 sections)
  1. Key facts
  2. How to set up payroll, step by step
  3. What to do every payday and every month
  4. Worked example: a three-person team
  5. End-of-year deadlines
  6. Penalties and records
Quick answer

Register as an employer with HMRC, choose payroll software (HMRC's free Basic PAYE Tools covers businesses with fewer than 10 employees), then on or before every payday send HMRC a Full Payment Submission and pay what you owe by the 22nd of the next tax month123. If your monthly bill is usually under £1,500 you may be able to pay quarterly. Claim Employment Allowance on your first Employer Payment Summary, enrol staff in a pension, and give everyone a P60 by 31 May34.

Payroll for one employee Register as an employer Compare UK payroll software Team cost planner
Key facts
  • Register before your first payday, but no more than 2 months before you start paying people1.
  • Software: HMRC-recognised payroll software, or free Basic PAYE Tools for fewer than 10 employees25.
  • Every payday: a Full Payment Submission (FPS) on or before the day you pay3.
  • Pay HMRC by the 22nd of the next tax month (19th by post); quarterly if you usually owe under £1,500 a month3.
  • Year end: P60s by 31 May; benefits by 6 July4.

How to set up payroll, step by step

  • Register as an employer with HMRC. You get an employer PAYE reference and an Accounts Office reference1.
  • Choose software. Basic PAYE Tools is free for businesses with fewer than 10 employees and calculates tax and NI and reports to HMRC5. If you buy software, check it can produce payslips, handle pension deductions, pay people on different frequencies and send an EPS: some products cannot. HMRC lists recognised products but does not recommend one2.
  • Collect each employee's details: P45 or starter checklist, NI number, date of birth, address and bank details.
  • Choose a workplace pension scheme that accepts auto-enrolment before your first payroll.
  • Decide your pay frequency (weekly or monthly) and payday, and put it in each written statement.

What to do every payday and every month

  • Run payroll: the software works out income tax from each tax code, employee and employer NI, pension and any student loan.
  • Send an FPS to HMRC on or before payday, even if you pay HMRC quarterly3.
  • Send an Employer Payment Summary (EPS) by the 19th of the next tax month if you are claiming anything, such as statutory pay recovery or Employment Allowance3.
  • Pay HMRC by the 22nd of the next tax month if you pay electronically, or the 19th by post3.
  • Give each employee a payslip, and pay pension contributions to the scheme.

Worked example: a three-person team

A shop employs three people on £25,000, £30,000 and £40,000. None is a company director, so the business can claim Employment Allowance6.

Annual payroll cost of three employees, 2026/27
Item Per year
Gross pay £95,000.00
Employer NI before allowance (15% above £5,000 each) £12,000.00
Employment Allowance −£10,500.00
Employer NI actually paid £1,500.00
Minimum employer pension (3% of qualifying earnings) £2,288.40
Total employer cost £98,788.40

Employer NI: £3,000 + £3,750 + £5,250. Pension: 3% of each salary above £6,240. Employee tax and NI come out of the gross pay, so they are not an extra cost to the business.

The allowance is used up month by month. Employer NI runs at £1,000.00 a month, so months 1 to 10 cost nothing, month 11 costs £500.00 and month 12 the full £1,000.00. Budget for the step-up in February and March.

End-of-year deadlines

Payroll year end for 2026/27
Task Deadline
Final FPS of the tax year On or before the last payday before 6 April 20274
Give each employee a P60 31 May 20274
Report expenses and benefits (P11D, P11D(b)) 6 July 202747
Pay Class 1A NI on benefits 22 July 2027 (19 July by cheque)7

Penalties and records

A late FPS can bring a monthly penalty that depends on the number of employees: £100 for 1 to 9, £200 for 10 to 49, £300 for 50 to 249 and £400 for 250 or more8. HMRC does not usually charge for the first late filing in a tax year, or where the payments on the FPS are within 3 days of payday, but it can contact employers who are regularly late8.

Keep payroll records, including pay, deductions, reports, payments to HMRC, leave and sickness, for 3 years from the end of the tax year they relate to. If records are incomplete, HMRC can estimate what you owe and charge a penalty of up to £3,0009.

Stop doing this by hand — Sage Payroll works out employer NI, pension auto-enrolment, statutory sick and maternity pay and files RTI to HMRC automatically for UK employers. Try Sage Payroll →

Affiliate link — we may earn a commission if you sign up, at no extra cost to you.

Related guides

The questions most people ask after reading this.

Frequently asked questions

How do I set up payroll for a small business?
Register as an employer with HMRC, choose payroll software (free Basic PAYE Tools if you have fewer than 10 employees), collect each employee's P45 or starter checklist, choose a workplace pension, then report to HMRC on or before every payday.
Is there free payroll software for small businesses?
Yes. HMRC's Basic PAYE Tools is free for businesses with fewer than 10 employees. It calculates tax and NI and reports to HMRC, but HMRC says it has some limitations, so check it covers what you need.
When do small businesses pay PAYE?
By the 22nd of the next tax month if paying electronically, or the 19th by post. If you usually owe less than £1,500 a month you may be able to pay quarterly.
What is the penalty for late payroll reporting?
£100 a month for 1 to 9 employees, £200 for 10 to 49, £300 for 50 to 249 and £400 for 250 or more. The first late filing in a tax year is usually not penalised.
How long must I keep payroll records?
3 years from the end of the tax year they relate to. HMRC can charge up to £3,000 if records are not kept.
Tools

Tools worth considering

UK payroll and HR tools. Editorial summary only — not endorsements.

Xero Payroll

Cloud payroll bundled with Xero accounting. Handles RTI submissions, auto-enrolment and payslip generation. Commonly used by UK small businesses already on Xero for bookkeeping.

See Xero Payroll →
QuickBooks Payroll

Payroll add-on for QuickBooks. Used by UK small employers for PAYE, NI, pension and HMRC RTI. Integrates with QuickBooks accounting.

See QuickBooks Payroll →
Sage Payroll

Long-established UK payroll software with HMRC recognition. Works standalone (without Sage accounting) and is widely used in small businesses and accountancy practices.

See Sage Payroll →
Employment Hero

HR and payroll platform used by growing UK teams. Combines contracts, onboarding, leave management and payroll in one system. HMRC RTI integrated.

See Employment Hero →

Once you know the cost — what next?

Running payroll correctly is the next practical step. These tools handle HMRC RTI submissions, auto-enrolment and payslip generation.

Sources & references

The figures and rules in this guide are drawn from the official UK government sources below. Rates are the confirmed 2026/27 amounts. Each link opens the relevant official page in a new tab.

  1. Register as an employer — GOV.UK www.gov.uk/register-employer
  2. Find payroll software — GOV.UK www.gov.uk/payroll-software
  3. Running payroll — GOV.UK www.gov.uk/running-payroll
  4. PAYE and payroll for employers: end of year — GOV.UK www.gov.uk/payroll-annual-reporting
  5. Basic PAYE Tools — GOV.UK www.gov.uk/basic-paye-tools
  6. Claim Employment Allowance — GOV.UK www.gov.uk/claim-employment-allowance
  7. Expenses and benefits for employers: reporting — GOV.UK www.gov.uk/employer-reporting-expenses-benefits
  8. What happens if you do not report payroll information on time — GOV.UK www.gov.uk/guidance/what-happens-if-you-dont-report-payroll-information-on-time
  9. PAYE for employers: keeping records — GOV.UK www.gov.uk/paye-for-employers/keeping-records
Verified against published GOV.UK and HMRC guidance.
EmployerCalculator Editorial. Content reviewed against HMRC guidance. Estimates only — not financial or legal advice. See our methodology and sources.

Written and reviewed by James Whitfield and the editorial team.

Every figure is checked against current HMRC and GOV.UK guidance and reviewed for the 2026/27 tax year. We explain the numbers in plain English with worked examples. Editorial standards · About us