NHS TDEE & Calorie Deficit Calculator
Calculate your daily energy expenditure and weight loss targets with our **NHS TDEE & Calorie Deficit Calculator**. To lose weight safely and sustainably, you need to establish a calorie deficit. This free tool uses the scientifically-backed **Mifflin-St Jeor BMR equation** to estimate your **Total Daily Energy Expenditure (TDEE)** based on your activity level, showing you your exact **calorie deficit target**, **BMI category**, and **daily water intake**.
Reference Salary Tables & Quick Facts
NHS Health Overview & Calculation Basis
This calculator operates under the official 2026/27 Agenda for Change and NHS Terms and Conditions of Service. All calculations are performed in real time as you adjust inputs.
| Deduction / Allowance | Rate / Threshold (2026/27) |
|---|---|
| Personal Allowance | £12,570 (Standard Tax Code: 1257L) |
| National Insurance | 8% on earnings between £12,570 and £50,270 (2% above) |
| NHS Pension Tiers | 5.2% to 12.5% based on pensionable pay |
Frequently Asked Questions
NHS Payroll Deductions & Tax Mitigation
Your monthly NHS take-home pay is affected by various statutory and voluntary payroll deductions. Understanding how these are calculated can help you optimize your net income:
Salary Sacrifice Benefits
Schemes like Cycle to Work or lease cars are deducted from your gross pay before tax and NI are calculated, reducing your taxable income.
Pension Tax Relief
NHS Pension contributions are deducted from your gross salary before income tax is calculated, providing automatic tax relief at your marginal rate.
Student Loan Repayments
Student loans (Plan 1, 2, 4, 5, or Postgraduate) are calculated on your gross earnings above the specific plan threshold and deducted automatically.
