UK Salary Comparison Calculator
Compare two salaries side by side and see the variance across PAYE, NI, pension, loans, deductions and take-home pay.
Inputs
Edit both salary scenarios. Each side can use different pay, tax codes, NI letters, pensions and loan settings.
Salary A
ASalary B
BComparison outputs
Headline cards show the two results and the gain or drop. The table underneath compares every pay element and its variance.
| Pay element | Salary A | Salary B | Variance |
|---|---|---|---|
| Gross annual pay | £0.00 | £0.00 | £0.00 |
| PAYE tax annualised | £0.00 | £0.00 | £0.00 |
| Employee NI annualised | £0.00 | £0.00 | £0.00 |
| Employer NI annualised | £0.00 | £0.00 | £0.00 |
| Employee pension cost | £0.00 | £0.00 | £0.00 |
| Employer pension | £0.00 | £0.00 | £0.00 |
| Student loan annualised | £0.00 | £0.00 | £0.00 |
| Postgraduate loan annualised | £0.00 | £0.00 | £0.00 |
| Other deductions annualised | £0.00 | £0.00 | £0.00 |
| Total deductions annualised | £0.00 | £0.00 | £0.00 |
| Net annual pay | £0.00 | £0.00 | £0.00 |
| Net monthly pay | £0.00 | £0.00 | £0.00 |
| Net weekly pay | £0.00 | £0.00 | £0.00 |
| Total employer cost | £0.00 | £0.00 | £0.00 |
Salary Comparison Calculator UK: Compare Two Salaries Side by Side
A salary comparison calculator helps you compare two salaries in a much more practical way than simply looking at the annual gross figure. Instead of asking which role pays more on paper, you can compare how PAYE tax, National Insurance, pension contributions and student loan deductions affect each salary and see the likely difference in take-home pay.
Why comparing salaries properly matters
Two salaries can look close at gross level but feel very different once deductions are applied. Pension contributions, tax treatment, loan deductions and other regular costs can materially change the value of a salary package. A proper comparison calculator helps show what each role may actually mean in real monthly and annual terms.
What a salary comparison calculator shows
A salary comparison calculator puts Salary A and Salary B side by side and highlights the variance between them. Instead of running two separate calculations manually, you can see both results in one view.
- gross salary for each role
- PAYE Income Tax for each salary
- employee National Insurance
- pension deductions
- student and postgraduate loan deductions
- other deductions
- monthly and annual take-home pay
- variance between the two salary packages
Key UK deductions that affect salary comparisons
Income Tax
For the current tax year, the standard Personal Allowance is £12,570. For England, Wales and Northern Ireland, standard rates are 20% on taxable income from £12,571 to £50,270, 40% from £50,271 to £125,140, and 45% above £125,140. This means two salaries can differ by less or more than expected once different portions fall into different bands. [Source](https://www.gov.uk/income-tax-rates)
National Insurance
National Insurance also affects the difference between one salary and another. For many employees in category A, current employee National Insurance is 0% up to £242 per week or £1,048 per month, 8% between the main thresholds, and 2% above the upper threshold. [Source](https://www.gov.uk/national-insurance-rates-letters)
Student and postgraduate loans
Student loan deductions can reduce the real benefit of a higher salary. Current monthly thresholds are £2,172 for Plan 1, £2,372 for Plan 2, £2,728 for Plan 4, £2,083 for Plan 5, and £1,750 for postgraduate loans. Repayments are generally 9% above threshold for Plans 1, 2, 4 and 5, and 6% above threshold for postgraduate loans. [Source](https://www.gov.uk/repaying-your-student-loan/what-you-pay)
When to use a salary comparison calculator
Comparing two job offers
If you have two roles to choose from, a side-by-side calculator can help you understand which one leaves you better off after deductions.
Evaluating a promotion
A promotion may look attractive in gross salary terms, but a comparison tool can show whether the increase translates into a meaningful take-home difference.
Weighing salary against pension value
One role may offer a better pension contribution, which can make the overall package more attractive even if monthly take-home pay is slightly lower.
How to compare two salaries accurately
To get a useful comparison, enter the best available information for both roles. That may include:
- gross salary
- bonus if relevant
- tax code if known
- tax region
- National Insurance category
- employee pension contribution
- employer pension contribution if shown
- student loan plan
- postgraduate loan setting
- other recurring deductions
What to focus on in the comparison output
Monthly take-home pay
This is often the most practical number if you want to understand how each salary affects day-to-day affordability.
Annual take-home pay
This helps show the bigger long-term picture across the full year.
Total deductions
Looking at total deductions side by side helps explain why one salary may not be as strong as it first appears.
Pension impact
A role with stronger pension contributions may offer better long-term value even if the net monthly figure is slightly lower.
Common salary comparison mistakes
People often compare salaries using only the advertised annual figure. That can be misleading. Other common mistakes include ignoring pension contributions, forgetting student loan deductions, and assuming a bonus or higher salary will translate directly into equivalent extra take-home pay.
Why our Salary Comparison Calculator is useful
Our calculator helps users compare two salary packages clearly in one place. Instead of running separate calculations and trying to compare them manually, you can see Salary A, Salary B and the variance across each important pay element.
Frequently asked questions
Is a salary comparison calculator better than using two separate salary calculators?
Usually yes, because it places both results side by side and highlights the variance automatically.
Can it compare student loan deductions?
Yes, if the calculator supports student and postgraduate loan settings. This is important because those deductions can materially affect the net difference between two salaries. [Source](https://www.gov.uk/repaying-your-student-loan/what-you-pay)
Can two similar salaries produce very different take-home pay?
Yes. Differences in tax treatment, pension deductions and loans can change the real value of a salary package.
Compare your salaries now
If you want to compare two salaries properly, use our Salary Comparison Calculator to review the full side-by-side breakdown and variance.