Pension Contribution Calculator
Estimate employee and employer pension contributions, tax relief, projected pot, and 4% drawdown income.
Monthly employee net cost
£133.33
Monthly employer contribution
£100.00
Total monthly going in
£266.67
Projected pot
£211,021.95
4% annual income
£8,440.88
Assumes basic-rate relief at source. Defined benefit schemes work differently from defined contribution pots.
What this tool includes
- Annual salary
- Employee contribution
- Employer contribution
- Tax relief
- Projected pot
- Drawdown income
What this tool calculates
This tool estimates pension contributions from salary, employee percentage, employer percentage, current pension pot, years to retirement and expected growth. It shows the net employee cost after basic-rate relief and the projected pot.
How to use it
- Enter salary and contribution percentages.
- Add your current pot, years to retirement and expected growth.
- Compare monthly contributions and projected retirement income.
Worked example
On a GBP40,000 salary with 5% employee and 3% employer contributions, the employee net monthly cost is lower than the gross contribution because 20% basic-rate tax relief is included.
Key assumptions
- Assumes relief at source basic-rate tax relief.
- Uses a constant growth rate.
- Defined benefit pensions, fees and inflation are not modelled.
Last updated: July 2026
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