Britvex Insights · Accountancy & Payroll · UK guidance

By Britvex Advisory Editorial Team · Reviewed 21 October 2026 · Permanent article

What does PAYE payroll mean for a UK employer?

Pay As You Earn (PAYE) is the system through which an employer deducts relevant Income Tax, employee National Insurance and other deductions from employment pay, while accounting for the employer’s own statutory charges. It is a reporting and payment process, not simply a bank transfer. Each payroll run must identify the correct employees, earnings, tax codes, National Insurance categories, pension calculations and period of payment.

An employer who has employees paid weekly, fortnightly or monthly needs an organised payroll calendar. This includes collecting starter information, distinguishing salary from expense reimbursement, managing statutory payments, reporting changes and reconciling deductions against the amounts paid to HMRC. Directors who receive salary through their own limited companies can also have payroll responsibilities, even where the company has very few people.

This article is an operational guide, rather than a payroll calculator. For implementation and recurring payroll administration, see Britvex Payroll & Workforce Services.

When must a business register as an employer?

HMRC normally requires employer registration before the first payday. You cannot generally register more than two months before people start being paid. You will need an employer PAYE reference and an Accounts Office reference, and the appropriate payroll software. If payment must be made before the PAYE reference arrives, HMRC describes a process for recording payroll, storing the FPS information and submitting it when the registration reference becomes available.

A common misconception is that a one-director company never needs a payroll scheme. Whether PAYE must be operated depends on the circumstances of payment and reporting; a company paying its director a salary should assess registration and reporting instead of assuming a small headcount is an exemption. The payroll registration decision is also distinct from incorporating a company, registering for VAT, or filing a director’s Self Assessment return.

1. Identify the legal employer and first expected payday.
2. Collect workers’ right-to-work and starter information through the appropriate processes.
3. Review whether PAYE payroll reporting is required for directors and any employees.
4. Choose a payroll system capable of FPS/EPS, tax codes, NI categories and pension exports.
5. Obtain PAYE references and establish a separate reconciliation of payroll liabilities.

What is the difference between gross pay, net pay and total employment cost?

Gross pay is the employee’s contractual pay and any other amounts included in the payroll calculation before deductions. Net pay is the amount actually paid after the relevant deductions. Total employer cost can be considerably higher than gross pay because it may also include employer National Insurance, employer pension contributions, apprenticeships levy obligations, salary-related benefits and payroll administration costs.

For budgeting, a small business should look at the full cost of a hire, not salary alone. A candidate on £30,000 does not necessarily cost the business only £30,000; pension contributions and employer NIC may materially change the annual cash-flow forecast. Conversely, not all remuneration or benefits are processed in identical ways, and employer NIC reliefs or special category thresholds can affect the outcome.

How PAYE and Real Time Information (RTI) reporting work

Real Time Information (RTI) is the mechanism used to submit payroll figures to HMRC during the tax year. The Full Payment Submission (FPS) typically reports each worker’s pay and deductions on or before the actual payday. HMRC uses these reports to calculate the employer’s liability, update employees’ tax records and support benefit calculations.

The Employer Payment Summary (EPS) has a different role. It may report an adjustment such as a claim for Employment Allowance, qualifying recoverable statutory payments, certain CIS deductions by limited companies or a period without employee payments. It is not a replacement for the ordinary FPS where people have been paid. HMRC generally requires an EPS by the 19th after the tax month for relevant reductions to be reflected.

An FPS acknowledgement is evidence of a file transmission, not proof that the net pay was correct or HMRC has received the correct payment. Employers should maintain all three elements: payroll register, HMRC reporting confirmation and a ledger reconciliation.

What does the payroll tax month mean?

HMRC’s PAYE tax month runs from the 6th of one calendar month to the 5th of the next. It is not automatically identical to a calendar-month accounting period. A company paying salaries on the last working day of a month therefore needs software that maps the actual payday to the correct HMRC period while handling differences in bank processing dates, bank holidays and pay-frequency settings.

After the tax month ends, HMRC normally expects adjustments through an EPS by the 19th where necessary, and electronic PAYE payment by the 22nd. Some small employers may qualify for quarterly payments subject to HMRC arrangements. The dates should be built into a calendar that includes pension contributions, salary approvals and internal review deadlines several working days earlier.

Employer National Insurance: how much does a business pay?

For the 2026/27 tax year, the standard employer Class 1 National Insurance rate is 15% and the ordinary secondary threshold is £5,000 per year. This threshold is only an approximate annual reference for an ordinary employee; payroll software must apply the appropriate earnings period, category letter and any special reliefs. Some employees have different upper secondary thresholds or 0% employer NIC treatment within specific qualifying limits.

The Employment Allowance is £10,500 in 2026/27 for qualifying employers, but it is not an automatic deduction available to every company. Eligibility, connected-employer rules and claims must be checked. An owner-director should not treat a headline allowance as guaranteed without examining the scheme’s conditions. HMRC’s rate table should be checked whenever the applicable year changes.

Workplace pension auto-enrolment and payroll

Workplace pension duties are not optional simply because a business is small. Employers must assess their workers against the applicable eligibility criteria, automatically enrol eligible jobholders into an appropriate scheme, process the required deductions and employer contributions, and meet communications and re-enrolment duties. Other workers may have opt-in or joining rights.

The payroll file should reconcile with the pension provider file. Typical sources of mistakes include pensionable-pay definitions, missed starter dates, opt-out refunds, salary sacrifice arrangements and failure to align pension periods with wage periods. A good process records who checked eligibility, when communications were issued, whether contributions were submitted on time and how any error was corrected.

For practical outsourcing, Britvex coordinates payroll and workplace pension reporting as part of its payroll service. Pension scheme suitability and specialist advice may require separate regulated guidance where appropriate.

Managing starters, leavers, directors and irregular payments

A clean starter file includes the correct identification details, employee statement and previous-pay information where relevant. It should specify start date, pay frequency, pension status and any student loan details. New employees joining mid-period may need pro-rata gross earnings and carefully handled tax-code information.

Leaving staff require correct final-pay treatment, outstanding holiday and other permitted adjustments, appropriate forms such as a P45 where relevant, and an accurate date of leaving in payroll records. Bonus payments, commissions and retrospective pay also need to be allocated correctly; pushing an amount through a miscellaneous category to make the bank payment easier risks incorrect tax or NI reporting.

Company directors have National Insurance rules that can differ from ordinary periodic employee calculation. A director’s loan, dividend and salary are not interchangeable: the correct classification must be supported by records and company decisions. See Britvex’s existing director’s loan account guide for the distinction between loans and remuneration.

P60s, benefits and payroll year-end review

The payroll tax year ends on 5 April. Employers normally give a P60 by 31 May to employees on payroll on the final day of the tax year. Employers must also review benefits, expense reporting or payrolling obligations, year-end submissions and any correction process. Changing payroll software without an appropriate year-to-date import can cause duplicate or missing annual totals.

Benefits reporting may involve P11D processes or payrolling arrangements, depending on the type of benefit and applicable current rules. Employers should not assume the treatment of every benefit is identical or that one tax-year process will remain unchanged forever. Review HMRC guidance before the new tax year begins and record the treatment applied to each benefit category.

Payroll worked example: five-person business

Consider a small design company with five employees. Its monthly gross payroll is £12,500, employer pension cost is £450, and simplified employer NIC before relief is estimated at £1,050. Those numbers are illustrative and do not determine actual payroll tax. Management should separate five things: salaries accrued, PAYE/employee NIC withheld, employer NIC, pensions owed and net wages paid.

Monthly management accounts should use the right payroll expense and liabilities, not merely the amount transferred to employees. Otherwise directors may understate the cost of hiring and lose visibility of outstanding employer tax and pension amounts. Connect the controls to accountancy services and management reporting.

A twelve-point payroll compliance checklist

1. Employer PAYE references and legal employer confirmed.
2. Worker and director status assessed appropriately.
3. Starter details, NI category, tax codes and student-loan data recorded.
4. Contracts, hours, overtime, allowances and bonuses approved.
5. Pension eligibility and contribution bases reviewed.
6. Gross-to-net calculation independently checked.
7. Payslips generated and securely issued.
8. FPS submitted on or before payday, unless a permitted exception applies.
9. EPS filed where adjustments or no-payment periods require it.
10. Bank net-pay files reconciled to payroll register.
11. PAYE liability reconciled and paid by the applicable date.
12. Year-end P60, benefits and software rollover planned.

Common payroll mistakes and how to avoid them

The biggest errors are often process failures rather than complex tax disputes. An employee is put on the wrong NI category, an FPS is submitted for the wrong pay date, HMRC is paid without accounting for EPS reductions, or a payroll journal is posted without checking the PAYE control account. Repeated manual overrides create uncertainty about which figures have been reported.

A reliable process uses two levels of review: input approval before calculation and final reconciliation after reporting. Payroll data includes sensitive employee information, so restrict access, use secure transmission and keep records for the applicable retention period. Do not publish employee payroll extracts or send tax codes through uncontrolled messaging.

If errors are identified, correct the information promptly through the appropriate HMRC process and communicate changes to staff clearly. Errors can affect employees’ tax positions and income-related benefits, not just the employer’s accounts.

When should an employer outsource payroll?

Outsourcing can be sensible when payroll includes irregular hours, a mixed workforce, multiple directors, pension complexity, statutory pay, many starters and leavers, or a finance team already stretched by VAT and year-end reporting. A provider can manage calculations, filing and reconciliations, but the employer remains responsible for supplying accurate inputs and meeting its legal obligations.

Agree the scope of engagement in writing. Check who approves hours, who uploads FPS/EPS, who pays HMRC, who runs pension files, what documents clients can access and how exceptions are escalated. The best outsourced arrangement creates clarity of responsibility rather than outsourcing mistakes.

For payroll setup, support or a handover review, contact Britvex Payroll & Workforce or use the Britvex Client Portal for existing-client documents and queries.

BRITVEX ADVISORY LTD · Company No. 16133503 · Britvex.com · Britvex.co.uk · Client Portal. Last reviewed 21 October 2026. General information, not individual advice.