Running payroll and understanding your accounts are two different things - and the gap between them causes real confusion for early-stage business owners. You can follow the steps to pay your staff, submit your Full Payment Submission to HMRC, and still have no idea how those numbers land in your profit and loss. That is the problem payroll accounting solves.
If you want to understand the compliance side — how Real Time Information (RTI) submissions and your Full Payment Submission fit into the payroll picture — BGE's guide to PAYE compliance for small employers covers that in detail.
This guide is not a bookkeeping tutorial. It is a practical literacy guide for a UK employer who wants to understand what the payroll figures in their accounts actually mean - well enough to check things look right and have a useful conversation with their accountant.
What Payroll Accounting Actually Covers (and What It Does Not)
Payroll accounting is not the same as running payroll. Running payroll means calculating what each employee is owed, deducting tax and National Insurance, and paying them the right amount on time. Payroll accounting is what happens next - recording those costs in your financial records so your accounts reflect the true cost of employing people.
The distinction matters because your payroll software handles the calculations. Your accounting records handle the meaning. A payslip tells you what an employee takes home. Your profit and loss account tells you what that employee actually costs your business - which is a larger number.
What payroll accounting covers
Payroll accounting covers the recording of all payroll-related costs in your business accounts - including gross wages, employer National Insurance contributions (NICs), pension auto-enrolment contributions, and any related liabilities owed to HMRC or your pension provider. It does not cover calculating payslips, submitting RTI returns, or managing pension enrolment - those sit within payroll processing.
Most early-stage owners do one without fully understanding the other. This guide focuses specifically on the accounting side - what the figures mean and how they flow through your records.
The Five Payroll Figures That Appear in Your Accounts Every Month
Every time you run payroll, five figures need to find their way into your accounts. Some represent costs to your business. Others represent liabilities - money you owe to HMRC or your pension provider but have not yet paid.
Gross wages - The full amount earned by each employee before any deductions. This is the starting point for all payroll accounting.
Employee PAYE income tax - Deducted from the employee's gross pay and held by you until you pay it to HMRC. It is not your cost - it is a liability you collect on HMRC's behalf.
Employee National Insurance contributions (NICs) - Also deducted from the employee's gross pay and held until paid to HMRC. Again, a liability rather than a business cost.
Employer National Insurance contributions (NICs) - This one is entirely your cost, on top of gross wages. Employer NICs are calculated at 15% on earnings above the Secondary Threshold, which is £5,000 per year (£417 per month) for 2025/26. and represent a significant additional employment cost.
Employer pension contributions - Under auto-enrolment, you are required to contribute a minimum of 3% of each eligible employee's qualifying earnings (the band between £6,240 and £50,270 per year for 2025/26) to their pension, with total minimum contributions (employer plus employee) set at 8%. This is your cost and must appear in your accounts.
Your actual cost of employment is not the salary figure
When you agree a salary with an employee, that gross figure is only part of what you will pay. Add employer NICs and your pension contribution on top, and the real cost to your business is consistently higher than the headline salary. Understanding this distinction is essential for budgeting and for reading your accounts correctly.
How Gross Wages, Employer NI, and Pension Costs Flow Through Your Profit and Loss
The profit and loss (P&L) account shows your business income minus your business costs. Payroll costs appear on the cost side - but understanding which costs appear, and when, is where many small employers get confused.
Three payroll figures hit your P&L directly as costs:
Gross wages - the full amount earned, before employee deductions
Employer NICs - your National Insurance cost on top of gross wages
Employer pension contributions - your minimum auto-enrolment contribution
The employee tax and employee NIC deductions do not appear as costs in your P&L because they are not your costs - they are deducted from the employee's pay and passed on to HMRC. They do, however, create a short-term liability in your balance sheet (money you owe HMRC until you make the payment).
The practical implication: your P&L will show a wages and salaries line, an employer NICs line, and a pension contributions line. Together, these three lines represent the true cost of your workforce each month. If your accounts only show net pay or gross wages without the employer NICs and pension costs, the picture is incomplete.
Illustrative example - based on a common UK founder scenario...
A sole director running a small services business in her second year of trading has one part-time employee on a salary of £18,000 per year.
Her monthly P&L shows:
Gross wages £1,500
Employer NICs (on earnings above the Secondary Threshold) approximately £162
Employer pension contribution £29 (minimum 3% of qualifying earnings of £11,760, i.e. £18,000 minus the £6,240 lower qualifying earnings limit).
The total monthly payroll cost to the business is around £1,645 - not the £1,500 the employee earns. The £1,645 is what appears in her accounts.
The net pay the employee actually receives is lower still, after employee PAYE and employee NICs are deducted at source.
What Your Accountant Needs from You Each Pay Period
Most early-stage owners assume their accountant sorts the payroll accounting automatically. Sometimes that is true - but only if you give them the right information, at the right time.
What your accountant typically needs each pay period, whether they are doing your bookkeeping or just reviewing your accounts, comes down to four things:
Monthly payroll information for your accountant
A payroll summary or payroll journal from your payroll software, showing gross wages, employee deductions, employer NICs, and net pay for the period
The total PAYE/NIC liability due to HMRC for the period (this should match your HMRC employer payment summary)
Your employer pension contribution figure for the period, and confirmation it has been submitted to your pension provider
Confirmation of the actual payment date for net wages (so the accounts can reflect cash flow accurately)
If you use payroll software, most of this is produced automatically in the form of a payroll summary report. Your job is to export it and send it - or to give your accountant access to the software directly.
If your accountant also does your bookkeeping
Some accountants will post the payroll journal entries themselves if you give them your payroll summary each month. Others will expect you or your bookkeeper to have already entered the figures. Clarify this early - a gap between payroll records and accounting records is one of the most common sources of year-end confusion for small employers.
How Payroll Software Handles Most of This Automatically
The good news for small employers is that modern payroll software does the heavy lifting on payroll accounting - provided you understand what it is doing and check the outputs.
Most UK payroll tools - whether standalone or built into accounting software - will automatically calculate gross pay, employee deductions, employer NICs, and pension contributions. They will produce a payroll summary each period, and many will also generate a payroll journal that can be imported directly into your accounting software.
Where payroll software integrates directly with your accounting package, those journal entries post automatically. Xero, QuickBooks, and FreeAgent all have payroll modules or integrations that handle this - see BGE's payroll software comparison for UK small businesses for a side-by-side breakdown. If your payroll and accounting tools are separate, you or your accountant will need to post the journal manually — but the payroll summary tells you exactly what the entries should be.
Integration reduces errors - but does not eliminate the need for oversight
Automated payroll-to-accounts integration is genuinely useful, but it only works correctly if the payroll data going in is accurate. A wrong tax code, a missed NIC exemption, or an incorrect pension rate will flow straight through into your accounts. Software automates the recording - it cannot correct bad inputs. Checking the payroll summary before it posts remains your responsibility as the employer.
Common Payroll Accounting Mistakes Small Business Owners Make
Most payroll accounting errors are not calculation mistakes - they are structural misunderstandings about what should appear in the accounts and when. These are the patterns that come up most consistently for early-stage employers.
Recording net pay instead of gross wages. If your accounts show only what employees receive in their bank accounts, you are understating your wage costs and misrepresenting the employer NIC and pension liabilities.
Omitting employer NICs from the P&L. These are a real cost of employment - not just a HMRC admin item. Missing them makes your wage line look lower than it really is.
Not recording pension contributions as a cost until they are paid. The cost accrues when the liability arises - when payroll runs - not when you transfer the money to the pension provider. Recording on a cash basis here will mismatch your costs and payments month to month**.
Treating PAYE and employee NICs as business costs. These are deductions from employee pay, not employer costs. Including them in your cost lines inflates your apparent payroll expense.
Falling behind on reconciling payroll liabilities. The amount you owe HMRC each month should match what is sitting in your accounts as a PAYE liability*. If it does not, something has been posted incorrectly - and it will compound over time.
* HMRC may allow you to pay quarterly instead - in which case the liability will accumulate over the quarter before payment is due.
** This does not apply to sole traders and partnerships using cash basis, which is now the default HMRC method for unincorporated businesses from 2024/25 onwards. Under cash basis, expenses are recognised when actually paid, not when the liability arises. The article needs a caveat for cash basis users.
How to Check Your Payroll Figures Are Correct Each Month
You do not need to be a bookkeeper to sense-check your payroll accounting. A short monthly review is enough to catch most problems before they become year-end headaches.
Monthly Payroll Accounting Check
Compare your payroll summary to your accounts
Pull the payroll summary from your payroll software and check that the gross wages, employer NICs, and pension contributions shown match what has been posted in your accounting records for the same period. They should be identical.
Check your PAYE liability balance
Your accounts should show a PAYE liability - the amount of income tax and employee NICs you have collected but not yet paid to HMRC. Cross-reference this against your HMRC online employer account. If they do not match, there is a posting error to find.
Confirm pension contributions are recorded and paid
Check that your employer pension contribution appears in the accounts as a cost, and that the corresponding payment to the pension provider has been made within the required window (by the 22nd day of the month following the payroll run (or the 19th if paying by cheque), as required by The Pensions Regulator). Late pension payments can trigger compliance issues.
Review your total payroll cost line
Look at your P&L wages line in total. Does the combined figure - gross wages plus employer NICs plus pension - look consistent with your headcount and salary levels? A figure that is unusually high or low month-on-month warrants a closer look before you file or share those accounts.
This check takes around ten minutes once you know what you are looking at. Done monthly, it means your year-end accounts will not throw up payroll surprises - and your accountant will have clean, reconciled figures to work with.
Make it a month-end habit
The easiest way to stay on top of payroll accounting is to treat the monthly check as a fixed item on your month-end to-do list - ideally the same day you confirm payroll has run. Catching a mismatch when the period is fresh is far simpler than tracing it back three months later.
Information only — not professional advice
This article is for information purposes only and does not constitute financial, legal, or tax advice. For advice specific to your circumstances, consult a qualified professional. Where figures or thresholds are referenced, always verify current rates at gov.uk or with HMRC directly, as tax rules change.
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