Salary Sacrifice Calculator (2026)
Estimate take-home pay impact and tax/NI savings from salary sacrifice pension contributions.
United Kingdom Calculator
Adjust Your Inputs
Move the sliders or type exact numbers. Results update instantly.
Instant Estimate
Your Results
Estimated Net Take-Home Cost
£3,480
Based on your selected salary sacrifice calculator assumptions. Try different sliders to compare scenarios.
Income Tax Saving
£2,400
Employee NI Saving
£120
Total Pension Contribution
£6,000
High Income Child Benefit Charge (HICBC):
• Income between £60,000 and £80,000 is subject to the tapered Child Benefit clawback (1% of benefit repaid per £200 earned over £60,000).
• Salary sacrifice or personal pension contributions lower your adjusted net income, helping protect your family's Child Benefit.
These calculations are financial projections and planning estimates, not tax, legal or licensed financial advice. HMRC 2025/2026 statutory rates, NI thresholds, and local council rates apply.
How to Use the Salary Sacrifice Calculator
Enter gross annual salary
Input your regular contractual salary before salary sacrifice.
Set annual sacrifice amount
Enter how much salary you agree to exchange for employer pension contributions.
Specify employer NI pass-through
Indicate what percentage of your employer’s 15% Class 1 NI savings is passed into your pension pot.
Formula & Calculation Methodology
Net Cost = Salary Sacrifice - Income Tax Saving - Employee NI SavingThis calculator uses standard United Kingdom financial formulas, IRS thresholds, and amortization schedules. All results compute instantly in your browser with zero data stored or transmitted.
Calculation Examples & Scenarios
Beating the 60% Tax Trap (£110,000 Salary)
£110,000 salary, sacrificing £10,000 into pension to bring taxable pay down to £100,000.
Higher Rate Earner (£65,000 Salary)
£65,000 salary, £5,000 annual sacrifice, 50% employer NI rebate shared.
Key Benefits
- Exposes the massive National Insurance savings unique to salary sacrifice schemes
- Eliminates the brutal 60% marginal tax trap between £100,000 and £125,140
- Models employer National Insurance rebate top-ups directly into your pension pot
- Preserves valuable family benefits like Tax-Free Childcare and 30 hours free childcare
Common Use Cases
- High earners earning over £100,000 looking to restore their full £12,570 Personal Allowance
- Parents earning £100k+ seeking to preserve 30 hours funded childcare eligibility
- Employees negotiating smart pension arrangements with UK employers
Why Salary Sacrifice Outperforms Relief-at-Source
With traditional relief-at-source pensions, basic rate income tax (20%) is reclaimed, but you still pay full employee National Insurance (8% or 2%) on your contributions. Under salary sacrifice, you formally agree to a contractual salary reduction, exempting that income from both income tax AND employee National Insurance.
Additionally, your employer saves 15% employer Class 1 National Insurance. Many forward-thinking companies pass 50% to 100% of this NI saving directly into your pension as an extra employer top-up boost.
How to Legally Eliminate the £100,000 Tax Cliff
The UK tax code punishes earnings between £100,000 and £125,140 by withdrawing £1 of Personal Allowance for every £2 of adjusted net income. This results in a devastating effective 60% income tax rate plus 2% employee NI (62% combined).
By sacrificing any income above £100,000 back down to £100,000, you retain your entire £12,570 tax-free allowance, avoid the 62% tax bite, and maintain entitlement to Tax-Free Childcare worth up to £2,000 per child per year.
Frequently Asked Questions
Pension salary sacrifice can reduce employee NI under current rules, but schemes and future rules can change.
Yes. Lower contractual pay can affect mortgage checks, statutory pay and some employment benefits.
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