Optimisation curve
Monthly take-home and monthly pension value across the tested salary-sacrifice range.
Take-homePension valueCombined value
Take Home Pay Optimiser
Model UK take-home pay across salary-sacrifice levels and compare threshold targets, monthly cash floor, employer NI passback, taxable allowances, benefits, and student-loan assumptions.
Suggested sacrifice£10,000£833 per month
Monthly take-home change-£127Against current sacrifice
Pension value change£4,300Includes employer NI passback
Suggested change
Recommended action£333 per month sacrifice changeIncrease salary sacrifice by £4,000 a year
Current annual sacrifice£500 per month£6,000
Suggested annual sacrifice£833 per month£10,000
Monthly take-home after change£5,713
Adjusted income after changePersonal allowance taper threshold: £100,000 adjusted income£100,000
Current versus suggested
Annual take-home, deductions, and pension value for the current and suggested sacrifice levels.
Take-homeTax, NI and loanPension value
Compared with current setup
Annual take-home change-£127 per month-£1,520
Tax, NI and loan changeNegative means less deducted-£2,480
Income tax change-£2,400
Employee NI change-£80
No student loan change£0
Employer NI passback change£300
Rules and assumptions
Rules year6 April 2026 to 5 April 20272026/27
Tax regionEngland, Wales or Northern Ireland
Taxable cash pay before sacrificeSalary £110,000 plus allowances £0£110,000
Annual taxable benefitsIncluded for adjusted-income and income-tax modelling£0
Personal allowance after change£12,570
Minimum monthly take-home floorNo floor set
Assumptions
Calculation notes
- Uses simplified 2026/27 income tax, employee NI, employer NI, and student-loan assumptions.
- Adjusted income is approximated as taxable cash pay plus taxable benefits, less salary sacrifice.
- The optimiser does not model minimum wage restrictions, employer scheme limits, tapered pension annual allowance, annual allowance carry-forward, bonus timing, childcare interactions, tax-code changes, or payroll rounding.
- Salary-sacrifice and pension decisions can affect benefits, borrowing, insurance, statutory payments, and access to cash. Check payroll, scheme rules, or regulated advice before acting.
Guide
How to use the Take Home Pay Optimiser
Model UK take-home pay across salary-sacrifice levels and compare threshold targets, monthly cash floor, employer NI passback, taxable allowances, benefits, and student-loan assumptions. It is useful for comparing personal finance scenarios before making a bigger decision because it keeps inputs, charted outputs, notes, and related next steps on the same page.
Start by checking base annual salary, current monthly salary sacrifice, optimise for, minimum monthly take-home, maximum sacrifice to test, and search increment. Where rule years are available, choose the rules year that matches the scenario you are checking. The results update as assumptions change, so you can compare scenarios before downloading a CSV report.
If rules, tax years, thresholds, or eligibility assumptions affect the result, review the calculation notes before acting on the output.
Inputs
Inputs to check
- Base annual salary: Enter the value you want to test.
- Current monthly salary sacrifice: Enter the value you want to test.
- Optimise for: Choose the option that best matches the case you are modelling.
- Minimum monthly take-home: Optional floor; use 0 if you do not want a cash-flow constraint
- Maximum sacrifice to test: Percentage of taxable cash pay to include in the search range
- Search increment: Choose the option that best matches the case you are modelling.
FAQs
Take Home Pay Optimiser FAQs
What is the Take Home Pay Optimiser for?
Model UK take-home pay across salary-sacrifice levels and compare threshold targets, monthly cash floor, employer NI passback, taxable allowances, benefits, and student-loan assumptions. Use it when you want a quick, editable estimate with charted results and visible assumptions.
Which assumptions should I check first?
Start with base annual salary, current monthly salary sacrifice, optimise for, minimum monthly take-home, maximum sacrifice to test, and search increment. Then confirm the selected rules year matches the period you are modelling.
Are the results exact?
The result is a planning estimate, not financial advice. Tax, payroll, pension, investment, mortgage, and allowance rules can depend on personal circumstances.
Can I keep or compare the result?
Yes. Use the Download CSV button on the calculator page to export the current inputs, headline results, detailed rows, chart data, insights, and notes.
What should I try next?
Try Salary Sacrifice Calculator, UK Take Home Pay Calculator, Pay Rise Calculator, and Pension Forecast Calculator next. These tools are linked because they use related assumptions or answer the next practical question.