Pension Tax Relief Calculator UK — How Much Extra Do You Get?

Pension tax relief is one of the most valuable benefits available — here’s how to calculate and maximise it.

How Tax Relief Works

The Basic Concept

What Happens	Example
You contribute	£80
Tax relief added	£20 (20% basic rate)
Total in pension	£100
Effective cost	£80 for £100 saved

By Tax Band

Tax Band	Rate	£100 Costs You
Basic (20%)	20% relief	£80
Higher (40%)	40% relief	£60
Additional (45%)	45% relief	£55
Scottish rates	Vary	Different

Two Relief Methods

Relief at Source

How It Works	Process
Your contribution	After tax (net)
Provider claims	20% basic rate
Higher rate?	You claim extra
Most personal pensions	Use this method

Net Pay Arrangement

How It Works	Process
Contribution taken	Before tax
Full relief	Automatic
Any rate taxpayer	Gets full relief
Most workplace pensions	Use this

Which Do You Have?

Check	Indication
Payslip	Shows method
Pension statements	Shows gross/net
HR	Can confirm
Provider documents	State method

Calculating Your Relief

Basic Rate Taxpayer

Contribution	Relief (20%)	Total Invested
£100/month	£25	£125
£200/month	£50	£250
£300/month	£75	£375
£500/month	£125	£625

Higher Rate Taxpayer

You Pay	Basic Relief	Extra 20%	Total Relief	In Pension
£80	£20	£20	£40	£100
£160	£40	£40	£80	£200
£240	£60	£60	£120	£300
£400	£100	£100	£200	£500

Additional Rate Taxpayer

You Pay	Basic Relief	Extra 25%	Total Relief	In Pension
£80	£20	£25	£45	£100
£160	£40	£50	£90	£200
£240	£60	£75	£135	£300

Annual Calculation Example

Higher Rate Taxpayer

Element	Amount
Annual contribution (net)	£4,800
Basic rate relief added	£1,200
Gross contribution	£6,000
Extra relief claimable	£1,200
Actual cost to you	£3,600
In your pension	£6,000

Effective Rates

Tax Band	£100 in Pension Costs
Basic (20%)	£80
Higher (40%)	£60
Additional (45%)	£55

Annual Allowance

Contribution Limits

Limit	Amount
Annual allowance	£60,000
Or	100% of earnings
Whichever is lower	Applies

Carry Forward

Rule	Details
Unused allowance	Carry forward 3 years
Must have been member	In those years
Use oldest first	Then subsequent

Example Carry Forward

Year	Allowance	Used	Unused
2022/23	£40,000	£10,000	£30,000
2023/24	£60,000	£20,000	£40,000
2024/25	£60,000	£60,000	£0
2025/26	£60,000	-	-
Available 25/26			£130,000

Tapered Annual Allowance

High Earners

Income Level	Allowance Reduction
Under £260,000	None
£260,000-£360,000	Gradually reduces
Over £360,000	Minimum £10,000

Threshold Income and Adjusted Income

Income Type	Calculation
Threshold income	Taxable income minus pension contributions
Adjusted income	Threshold + employer contributions
Both tested	To determine taper

Taper Calculation

Adjusted Income	Allowance
£260,000	£60,000
£280,000	£50,000
£300,000	£40,000
£320,000	£30,000
£340,000	£20,000
£360,000+	£10,000

How to Claim Higher Rate Relief

Through Self Assessment

Step	Action
1	Complete tax return
2	Enter pension contributions
3	HMRC calculates relief
4	Refund or tax code adjusted

Through Tax Code

Method	Process
Phone HMRC	Request adjustment
Provide contribution details	Amount and frequency
Code adjusted	Receive relief monthly
More complex	If contributions vary

What to Report

On Tax Return	Box
Gross contributions	After basic relief added
Relief at source amounts	If using this method
Personal contributions	Net pay asks differently

Employer Contributions

Additional Tax Efficiency

Benefit	Details
No NI	On employer contributions
Corporation tax relief	For employer
No limit	Beyond annual allowance

Salary Sacrifice

How It Works	Impact
Reduce gross salary	By contribution amount
Employer pays to pension	Instead
You save	Income tax and NI
Employer saves	NI too

Salary Sacrifice Example

Element	Before	After Sacrifice
Gross salary	£40,000	£36,000
Employer pension	£0	£4,000
Your tax	Higher	Lower
Your NI	Higher	Lower
In pension	Same	Same or more

Scottish Tax Rates

Different Bands

Band	Rate	Relief
Starter (19%)	19%	19%
Basic (20%)	20%	20%
Intermediate (21%)	21%	21%
Higher (42%)	42%	42%
Advanced (45%)	45%	45%
Top (48%)	48%	48%

Claiming in Scotland

Note	Details
Relief at source	Still claims 20%
You claim difference	Via Self Assessment
Intermediate taxpayer	Claim extra 1%
Higher taxpayer	Claim extra 22%

Common Scenarios

Employed, Workplace Pension (Net Pay)

What Happens	Details
Contribution	Before tax
Full relief	Automatic
Nothing to claim	Already received
Check payslip	Confirms

Employed, Personal Pension (Relief at Source)

What Happens	Details
Contribution	Your net pay
20% added	By provider
If higher rate	Claim extra
Via Self Assessment	Or tax code

Self-Employed

What Happens	Details
Personal pension	Usually relief at source
Claim via SATR	Include contributions
Relief all rates	Claimed together

Summary

Your Tax Rate	£100 in Pension Costs
20%	£80
40%	£60
45%	£55

Key Limits	2025/26
Annual allowance	£60,000
Or 100% earnings	Whichever lower
Carry forward	3 previous years
Tapered AA starts	£260,000 income

Checklist	Action
Know your scheme type	Net pay or relief at source
Check if claiming	Higher rate relief
Self Assessment	Report contributions
Maximise contributions	Within budget
Consider salary sacrifice	If available