Payroll Deductions Calculator UK

What Is a Payroll Deductions Calculator?

A payroll deductions calculator helps you calculate all deductions from an employee's gross pay including Income Tax, National Insurance, pension contributions and student loan repayments. This payroll deductions calculator UK shows the full breakdown of deductions and net pay.

How to Use the Payroll Deductions Calculator

Enter the gross pay, select pay frequency, tax region, tax code, and enter pension contribution and student loan details. Click Calculate Deductions to see the full deduction breakdown.

How Payroll Deductions Are Calculated

Payroll Deductions Example

Common Payroll Deductions

• Income Tax — deducted via PAYE based on tax code
• National Insurance — employee contributions on earnings above thresholds
• Pension Contributions — workplace and personal pensions
• Student Loan Repayments — based on plan and earnings
• Other Deductions — benefits, salary sacrifice, etc.

Income Tax (2025/26)

Band	England / Wales / NI	Scotland
Personal Allowance	0% up to £12,570	0% up to £12,570
Starter Rate	N/A	19% £12,571-£14,802
Basic Rate	20% £12,571-£37,700	20% £14,803-£26,998
Intermediate Rate	N/A	21% £26,999-£43,732
Higher Rate	40% £37,701-£125,140	42% £43,733-£125,140
Additional / Top Rate	45% over £125,140	48% over £125,140

National Insurance (2025/26)

• Employee NI: 8% on earnings between £12,570 and £50,270
• Employee NI: 2% on earnings above £50,270

Student Loan Plans

• Plan 1: 9% on earnings over £25,220/year
• Plan 2: 9% on earnings over £27,295/year
• Plan 4: 9% on earnings over £27,660/year
• Plan 5: 9% on earnings over £25,000/year
• Postgraduate: 6% on earnings over £21,000/year

Gross Pay vs Net Pay

Gross pay is the total earnings before deductions. Net pay is what the employee actually takes home. The difference is the total payroll deductions.

Common Payroll Deduction Mistakes

• Using the wrong tax code — affects Income Tax deductions.
• Forgetting National Insurance — a significant deduction.
• Not including pension contributions — they reduce net pay.
• Ignoring student loans — if applicable, they must be deducted.
• Using the wrong tax region — Scotland has different rates.

Important Assumptions and Limitations

• Tax year: 2025/26
• Personal Allowance: £12,570 (standard)
• No other deductions (benefits, salary sacrifice) are included
• Results are estimates, not exact payroll calculations

Frequently Asked Questions