How to Read Your Payslip UK — Understanding Every Line

Understanding your payslip helps you spot errors and plan your finances. Here’s how to read every line.

Anatomy of a Payslip

Key Sections

Section	What It Shows
Personal info	Name, employee number, NI number
Pay period	Dates covered, payment date
Earnings	Gross pay, overtime, bonuses
Deductions	Tax, NI, pension, other
Totals	Net pay, year-to-date figures

Example Payslip Layout

Element	This Period	Year to Date
Payments
Basic salary	£2,916.67	£26,250.03
Overtime	£150.00	£450.00
Gross pay	£3,066.67	£26,700.03
Deductions
Income Tax	£368.67	£3,318.03
National Insurance	£213.73	£1,923.57
Pension	£153.33	£1,380.00
Student Loan	£87.75	£790.00
Total deductions	£823.48	£7,411.60
Net pay	£2,243.19	£19,288.43

Understanding Tax

Your Tax Code

Code	Meaning
1257L	Standard (£12,570 tax-free)
1257L M	Marriage allowance received
1257L N	Marriage allowance given
BR	Basic rate on all (20%)
D0	Higher rate on all (40%)
D1	Additional rate (45%)
NT	No tax
0T	No personal allowance
K codes	Allowance exceeded, extra owed

How Tax Code Works

Tax Code	Tax-Free Allowance
1257L	£12,570/year
1150L	£11,500/year
1000L	£10,000/year
500L	£5,000/year
K475	Minus £4,750 (owe extra)

Tax Calculation Example

For £35,000 Salary	Calculation
Gross annual	£35,000
Tax-free (1257L)	£12,570
Taxable	£22,430
Tax at 20%	£4,486/year
Monthly tax	£373.83

Check Your Tax

If Tax Seems	Check
Too high	Tax code correct? Emergency tax?
Too low	Second job? Benefits reported?
Varies	Cumulative calculation normal

Understanding National Insurance

NI Letters

Letter	Who
A	Standard employee
B	Married women’s reduced rate
C	Over State Pension age
H	Apprentice under 25
M	Under 21

2025/26 NI Rates (Category A)

Earnings	Rate
Below £242/week	0%
£242-£967/week	8%
Above £967/week	2%

NI Calculation Example

For £35,000 Salary	Calculation
Monthly gross	£2,916.67
Below threshold	£1,047.50 (0%)
At 8% band	£1,869.17 × 8%
Monthly NI	£149.53

Understanding Pension

Auto-Enrolment Minimums

Contribution	Rate
Your minimum	5%
Employer minimum	3%
Total minimum	8%

How It Appears

Line	Meaning
Pension (Employee)	Your contribution
Pension (Employer)	Their contribution (may show)
Salary Sacrifice Pension	Pre-tax deduction

Types of Pension Deduction

Type	Tax Treatment
Relief at source	From net pay, HMRC adds basic rate
Net pay arrangement	From gross, full tax relief
Salary sacrifice	From gross, saves NI too

Pension Tax Relief Example

£100 Contribution	Relief at Source	Net Pay
You pay	£80	£100 gross
HMRC adds	£20	N/A
In pension	£100	£100
Your cost	£80 net	£80 net (for 20% taxpayer)

Other Common Deductions

Student Loan

Plan	Threshold	Rate
Plan 1	£24,990/year	9%
Plan 2	£27,295/year	9%
Plan 4	£31,395/year	9%
Plan 5	£25,000/year	9%
Postgraduate	£21,000/year	6%

Student Loan Calculation

For £35,000 (Plan 2)	Calculation
Salary	£35,000
Threshold	£27,295
Amount over	£7,705
Deduction (9%)	£693.45/year
Monthly	£57.79

Other Deductions

Deduction	What It Is
Childcare vouchers	Tax-free benefit (closed to new)
Cycle to work	Bike scheme salary sacrifice
Season ticket loan	Travel loan repayment
AVC	Additional voluntary pension
Give As You Earn	Charitable giving
Attachment	Court-ordered deduction

Understanding Payslip Totals

This Period vs Year to Date

Column	Shows
This period	Current month only
Year to date (YTD)	Total since April 6th

Why YTD Matters

Use	Purpose
Check tax calculation	Should match expectations
Track earnings	For mortgage, loans
Spot errors	Identify issues early

Salary Sacrifice Explained

How It Works

Without Sacrifice	With Sacrifice
Gross: £35,000	Gross: £33,000
Tax on: £35,000	Tax on: £33,000
NI on: £35,000	NI on: £33,000
Then pay for benefit	Benefit from gross

Common Salary Sacrifice Benefits

Benefit	Saving
Pension	Tax + NI
Cycle to work	Tax + NI
Electric car	Tax + NI (reduced BiK)
Technology scheme	Tax + NI

Impact on Payslip

Line	Shows
Basic salary	Reduced amount
Salary sacrifice	The benefit value
Lower tax/NI	On reduced salary

Checking for Errors

Red Flags

Issue	What to Look For
Wrong tax code	Check against HMRC letter
Emergency tax	BR or 0T code unexpectedly
Missing payment	Overtime, bonus not shown
Wrong deduction	Amount doesn’t match
Hours incorrect	If paid hourly

Common Mistakes

Mistake	Impact
Wrong tax code	Over/underpaying tax
Student loan wrong plan	Over/underpaying
Pension % wrong	Retirement impact
Missing allowance	COLA, shift pay etc.

How to Query

Step	Action
1	Note the discrepancy
2	Email payroll with details
3	Keep copies
4	Follow up if not resolved
5	Escalate to HR if needed

Practical Calculations

Quick Gross to Net Check

For Basic Rate Taxpayer	Rate
Income Tax	~20% (above £12,570)
National Insurance	~8-12%
Pension	~5%
Approximate deductions	25-35%

Sense Check Your Pay

£35,000 Salary	Expected
Monthly gross	£2,916.67
Tax (~15%)	~£374
NI (~5%)	~£150
Pension (5%)	~£146
Net (excl student loan)	~£2,247

Summary

Payslip Element	What to Check
Tax code	Matches HMRC records
Gross pay	Correct salary/hours
Tax	Reasonable for income
NI	Correct letter and rate
Pension	Right percentage
Student loan	Correct plan
Net pay	Matches expectations

When to Act	What to Do
Wrong tax code	Contact HMRC
Calculation error	Contact payroll
Missing payment	Raise with manager
Suspicious deduction	Check with HR