Learn the difference between net pay and relief at source pension contributions.

Pension Contributions: Net Pay or Relief at Source?

Employees paying into workplace pension schemes who want to understand how tax relief is applied to their pension contributions.

Explains the difference between Net Pay arrangements and Relief at Source, the two common methods used in the UK to apply tax relief to pension contributions.

The method used by a pension scheme can affect how tax relief is received and whether additional relief needs to be claimed. Understanding the system used by your pension scheme helps ensure you receive the correct tax relief.

Understanding How Pension Tax Relief Is Applied

Tax relief is an important incentive designed to encourage individuals to save for retirement. In the UK, workplace pension schemes typically apply tax relief using one of two methods:

  • Net Pay Arrangement
  • Relief at Source

Although both systems provide tax relief on pension contributions, they apply the relief in different ways.

Net Pay Arrangement

Under a Net Pay Arrangement, pension contributions are deducted from an employee’s salary before Income Tax is calculated.

This means the employee automatically receives tax relief at their highest rate of Income Tax.

For example:

  • If an employee earns £30,000 and contributes £2,000 to their pension, the contribution is deducted before Income Tax is calculated.
  • The employee only pays Income Tax on £28,000.

This method ensures the tax relief is applied immediately through the payroll system.

Relief at Source

Under the Relief at Source method, pension contributions are made from income after tax has already been deducted.

The pension provider then claims basic rate tax relief (20%) directly from HMRC and adds it to the pension fund.

For example:

  • An individual contributes £80 to their pension.
  • The pension provider claims £20 from HMRC.
  • The total contribution to the pension becomes £100.

If the individual is a higher-rate or additional-rate taxpayer, they may be able to claim further tax relief through Self Assessment or by asking HMRC to adjust their tax code.

Key Differences Between the Two Systems

  • Net Pay Arrangement: Contributions are taken before tax, and tax relief is applied automatically through payroll.
  • Relief at Source: Contributions are taken after tax, and the pension provider claims basic rate tax relief from HMRC.
  • Additional tax relief: Higher-rate taxpayers using Relief at Source may need to claim extra relief through Self Assessment.

Real-World Application

Employees may not always be aware which system their workplace pension uses. Reviewing payslips or pension statements can help identify how contributions are deducted and whether additional tax relief may need to be claimed.

Understanding the difference between these systems can help ensure that the correct tax relief has been applied to pension contributions.

Net Pay vs Relief at Source Pension Contributions: Understanding the Tax Difference in London

Choosing between a net pay arrangement and relief at source can significantly affect how pension tax relief is applied, particularly for employees with different income levels. Cigma Accounting, based in Farringdon in London, helps individuals and employers understand how each system works and ensures pension contributions are structured correctly through expert accounting services London.

Employees and business owners around Kings Cross and Islington often need clarity on how tax relief is applied under each scheme and whether they may be missing out on relief due to salary thresholds. With physical offices across London, Cigma Accounting provides practical guidance from a knowledgeable tax accountant London to ensure pension contributions remain tax-efficient and compliant with HMRC rules.

Not Sure Whether Your Pension Uses Net Pay or Relief at Source?

The way tax relief is applied to pension contributions can affect how much relief you actually receive. Net pay arrangements and relief-at-source schemes operate differently, particularly for lower or higher earners. Understanding which method your pension uses can help ensure you’re not missing relief or overpaying tax.

Trusted guidance from London-based accountants, focused on accuracy, clarity, and compliance. 


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CIGMA Accounting
CIGMA Accounting Ltd is a forward-thinking accounting and tax firm based in London, dedicated to delivering high-quality compliance, tax planning, and business advisory services to entrepreneurs, landlords, and growing SMEs. With offices in Wimbledon and Farringdon, we combine local expertise with a tech-driven approach to simplify accounting. Our services include corporation tax filing, VAT compliance, HMRC investigation support, R&D tax credit claims, capital allowances optimisation, and bookkeeping automation. What sets CIGMA apart is our ability to blend traditional accounting rigour with AI-powered systems that reduce errors, save time, and provide real-time financial insights. Our team ensures that every client - from startups to high-net-worth individuals - receives a bespoke solution aligned with their growth goals. Whether you need strategic tax planning, help with HMRC disclosures, or a full outsourced finance function, CIGMA Accounting delivers clarity, compliance, and confidence.
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