Calculations Overview

Data Sources

The teacher pay scales and related data used in the TeacherPayCalculator are sourced from a range of authoritative bodies and official publications. Key sources include:

  • Department for Education (DfE): Official publications and data releases on teacher pay scales, employment terms, and benefits.
  • UK Government Publications: Data from HMRC on income tax bands, National Insurance thresholds, and student loan rates.
  • Teacher Unions and Professional Bodies: Guidance on negotiated agreements for pay scales and working conditions.
  • Teacher Pensions: Official pension contribution rates and thresholds effective from 1 April 2024, updated regularly.
  • HMRC Guidance: Detailed information on tax codes, including student loan thresholds and repayment rates.

These sources are updated periodically to reflect changes in government policy and negotiated agreements. For the most accurate and up-to-date information, users are encouraged to refer to the original publications and official websites.

Tax Codes

Tax codes determine your personal allowance and influence your tax calculation. Some common tax codes include:

  • 1257L – Standard tax code with a personal allowance of £12,570.
  • NT – No tax is applied.
  • BR – All income is taxed at the basic rate (20%), with no personal allowance.
  • D0 – All income is taxed at the higher rate (40%), with no personal allowance.
  • D1 – All income is taxed at the additional rate (45%), with no personal allowance.
  • 0T – No personal allowance is given.
  • K codes – Indicate a negative personal allowance (an amount to be added to your taxable income).
  • M – Indicates you’re receiving Marriage Allowance; your personal allowance is increased by 10% (i.e. add an extra 10% of £12,570).
  • N – Indicates you’ve transferred Marriage Allowance to your partner; your personal allowance is reduced by 10%.
Income Tax

Your taxable income is calculated by subtracting deductions (such as pension contributions) and your effective personal allowance from your gross salary. The current income tax bands are:

  • Personal Allowance: Up to £12,570 – 0% tax
  • Basic Rate: £12,571 to £50,270 – 20% tax
  • Higher Rate: £50,271 to £125,140 – 40% tax
  • Additional Rate: Above £125,140 – 45% tax

If your adjusted income (gross salary minus pension contributions) exceeds £100,000, your personal allowance is reduced by £1 for every £2 earned over £100,000.

National Insurance

National Insurance (NI) is calculated based on your earnings. The annual thresholds used are approximately:

  • Lower Threshold: £12,584 per year
  • Upper Threshold: £50,284 per year

Contributions are typically calculated as:

  • 8% on earnings between the lower and upper thresholds
  • 2% on earnings above the upper threshold
Pension Contributions

Pension contributions for teachers are deducted from your effective base salary before income tax is calculated, thereby reducing your taxable income.

The member contribution rate depends on your annual salary. The thresholds and rates for eligible employment from 1 April 2024 are as follows:

Annual Salary Rate (From 1 Apr 2024) Member Contribution Rate
Up to £34,289.99 7.4%
£34,290.00 to £46,158.99 8.6%
£46,159.00 to £54,729.99 9.6%
£54,730.00 to £72,534.99 10.2%
£72,535.00 to £98,908.99 11.3%
£98,909.00 and above 11.7%
Student Loan

If you have a student loan, repayments are calculated based on your income exceeding a certain threshold. More information about Student Loan Plans can be found at Student Finance. The rates and thresholds vary depending on your specific loan plan:

  • Plan 1: Specific threshold and rate as defined by HMRC.
  • Plan 2: Specific threshold and rate as defined by HMRC.
  • Plan 4, Plan 5, Postgraduate: Each has its own defined thresholds and repayment rates.

The student loan repayment is deducted after other adjustments are made to your salary.