The short answer
Compare a UK pay rise or relocation by modelling take-home pay, tax, NI, pension, housing, commuting, childcare and the break-even point.
A pay rise can look attractive on an offer letter and still leave you with less practical flexibility after tax, pension deductions, housing, commuting and family costs. A move to a higher-paying city can create the same trap: gross salary rises, but rent, travel, childcare and one-off relocation costs rise with it. The useful comparison is therefore not simply old salary versus new salary. It is the change in sustainable disposable income after the costs attached to the new role.
The Pay Rise and Move Calculator is designed for that scenario. It compares entered salaries, UK region, pension, student-loan deductions, housing, commuting, council tax, childcare and relocation costs. Treat the result as a planning model. It does not reproduce your payslip, verify a tax code, quote a local rent or decide whether an offer is right for you.
Start with net change
Model recurring costs
Find the break-even point
Gross salary is only the starting point
The gross increase is the difference between the old and new contractual salary before deductions. The net increase is what remains after the relevant deductions. Those two numbers diverge because the additional income can interact with Income Tax bands, National Insurance, pension contributions, student-loan deductions and benefits.
Use the current GOV.UK Income Tax rates and Personal Allowances for the applicable tax year. A taxpayer in Scotland may have Scottish Income Tax bands for non-savings and non-dividend income, so the same gross salary can produce a different tax result from a comparable salary in England, Wales or Northern Ireland. The Scottish Government Income Tax guidance should be checked for the relevant year.
National Insurance is a separate system from Income Tax. Check the applicable category and current rates using GOV.UK National Insurance guidance. An employee’s exact payroll result can also depend on pay frequency, tax code, benefits and whether the change happens part-way through a tax year. The calculator’s annual scenario is useful for comparison but is not a substitute for an employer’s payroll calculation.
Marginal deductions are not the same as a single tax rate
When a pay rise crosses a band or interacts with a tapered allowance, not every pound of the whole salary is taxed at the higher marginal rate. The extra pound is considered at the relevant point in the calculation. This is why it is better to compare the old and new complete scenarios than to subtract one headline tax percentage from the raise.
A promotion can also change pension contributions or the amount deducted for a student loan. If your employer uses salary sacrifice, check the scheme’s rules and the effect on contractual pay and benefits. If your contribution is taken under a different pension method, the tax treatment can differ. Ask payroll for the exact treatment rather than assuming that every pension percentage has the same cash effect.
Student loans can change the value of the increase
A student-loan deduction is not the same as Income Tax and does not mean the same amount is repaid by every borrower. It depends on the plan or loan type, the applicable threshold, the repayment rate and the income used in payroll. Postgraduate loans can also be separate from undergraduate plans.
Use the current GOV.UK student and postgraduate loan deduction tables and check your payslip or employer payroll information. The calculator uses a simplified annual estimate. It does not settle a loan, forecast the balance, account for every payroll-period rounding rule or determine whether making voluntary overpayments is suitable.
For offer comparisons, record whether the new employer will use the same payroll information, whether your plan selection is correct and whether the move crosses a tax year. A salary increase that appears to create a large gross gain can produce a smaller immediate net gain when several deductions rise together.
Pension contributions and the value of the offer
Compare the whole pension package, not just the employee salary. Record your own contribution, the employer contribution, matching rules, salary-sacrifice availability, waiting periods, vesting conditions, investment options and any benefit lost when you leave. A new role with a slightly lower salary can sometimes have a stronger employer contribution; a higher salary can be less valuable if the pension is materially weaker.
Do not treat a long-term investment projection as cash available today. The calculator can show an illustrative pension difference from entered contributions and a stated growth assumption. That is a scenario, not a pension forecast or return guarantee. Keep the immediate household budget separate from the long-term retirement comparison.
If salary sacrifice is offered, ask how it affects statutory pay, bonus calculations, mortgage evidence, life cover or other salary-linked benefits. Scheme-specific documentation and payroll confirmation matter more than a generic online example.
Housing is usually the largest relocation variable
A higher salary does not compensate for every housing increase. Compare the actual expected housing cost in both locations, including rent or mortgage payment, deposit financing, service charges, insurance, utilities and the likely size or condition of the property. If buying, also consider transaction costs, maintenance and the time horizon; MoneyHelper’s home-buying guidance is a useful official-backed starting point for the broader decision.
Housing data should be treated as context, not as a promise about your next property. The ONS housing information provides official statistics, but your commute, household size, tenure and property requirements determine your own cost. Use a rent quote or mortgage illustration for the scenario wherever possible.
Council tax can also differ between locations and property bands. Enter the actual annual bill when known. If it is not known, use a clearly labelled planning estimate and test a higher case. A move that looks positive before council tax and utilities may be marginal after all recurring housing costs are included.
Commuting and ordinary travel
Travel changes should include the full recurring cost: rail or bus fares, fuel, parking, tolls, insurance mileage, maintenance and the value of additional travel time. If you need to travel home to see family, include that separately from the daily commute. A longer commute can also change childcare pickup, meals, overnight accommodation and the number of days you can work from home.
Do not assume that ordinary commuting becomes a tax deduction because the new job is in another city. HMRC guidance on ordinary commuting and private travel explains the distinction between ordinary commuting and travel to a temporary workplace. The calculator treats commuting as a personal cost assumption; it does not claim tax relief.
Compare both money and time. If the new role adds ten hours of travel each week, a small net improvement may not reflect the real trade-off. Keep a separate note of flexibility, travel time, role security, progression, working pattern and family impact rather than hiding those factors inside a financial score.
Childcare, benefits and household effects
A pay rise can affect household support, childcare affordability and eligibility for income-related benefits. Enter your actual change in childcare and do not assume that the gross salary increase is the only household change. A partner’s income, working hours and childcare schedule can matter as much as the employee’s offer.
Check the relevant official guidance for any benefit or support that may change. This guide does not calculate Universal Credit, tax-free childcare, Child Benefit charges or every employer benefit. If the new role changes working hours or location, model the practical childcare arrangement rather than only multiplying a weekly price by the number of weeks in a year.
One-off relocation costs and break-even
Separate one-off costs from recurring costs. One-off costs may include a deposit, moving company, storage, temporary accommodation, travel to view properties, legal costs or replacing essential items. Recurring costs include rent, council tax, commuting, childcare, utilities, insurance and travel home.
The simple break-even calculation is:
break-even months = one-off relocation costs ÷ monthly recurring improvement
This is meaningful only if the monthly improvement is positive and stable. If the result is zero or negative, there is no financial break-even from the entered assumptions. If the new employer offers relocation support, ask what is covered, when it is paid and whether repayment or clawback conditions apply. GOV.UK relocation-expense guidance explains that tax treatment depends on the qualifying expense and the circumstances; do not assume that every moving cost is tax-free or reimbursable.
Build a cautious case with a higher deposit, a delayed move, temporary accommodation or an overlap between two homes. Then test whether the offer remains worthwhile if you leave sooner than expected. A break-even period that only works after several years should be considered alongside probation, job security and the risk of another move.
A reliable offer-comparison workflow
Use the following sequence before accepting a pay rise or relocation:
- Verify the offer. Record base salary, bonus, overtime, benefits, pension, working pattern, location, start date, probation, notice and any clawback terms.
- Calculate the payroll scenario. Use the relevant UK region, tax year, pension method and student-loan plan. Check the output against a recent payslip or ask payroll for an illustration.
- Price the new life. Obtain realistic housing, travel, council tax, childcare and utility figures. Separate one-off moving costs from recurring costs.
- Stress-test it. Reduce the expected bonus, increase rent or commuting, delay the move and test the budget on one income if that risk is relevant.
- Compare non-financial value. Include hours, flexibility, progression, job security, family arrangements and the likelihood that you will remain in the role.
- Negotiate the full package. A salary, employer pension contribution, relocation support, flexible work or travel support may have different value from an equivalent cash increase.
Frequently Asked Questions
How do I compare the real value of a UK pay rise?
Can a pay rise leave me worse off?
Does moving to Scotland change the tax calculation?
Is commuting tax-deductible after a relocation?
How long should a relocation payback period be?
Does the calculator reproduce my payslip?
Bottom line
The best pay-rise decision is based on the life you will actually fund, not the salary headline. Confirm the new payroll deductions, compare the full pension and benefits package, obtain realistic housing and travel costs, separate one-off relocation costs from recurring spending and run a cautious scenario. A move is financially stronger when the net improvement remains positive after reasonable shocks and the role also works for your time, family and career.
Use the Pay Rise and Move Calculator to organise the comparison, then verify the offer, tax treatment and relocation terms with the employer and current official guidance. Its recurring difference and one-off relocation break-even are scenario calculations, not predictions or recommendations.
Official sources
- GOV.UK: Income Tax rates and Personal Allowances — current UK Income Tax information.
- GOV.UK: National Insurance rates and categories — employee National Insurance context.
- GOV.UK: Student and postgraduate loan deduction tables — payroll deduction tables for 2026–27.
- GOV.UK: Tax when you move for work — qualifying relocation expenses and tax treatment.
- GOV.UK: Ordinary commuting and private travel — commuting and temporary-workplace guidance.
- Scottish Government: Income Tax — Scottish Income Tax context.
- MoneyHelper: Buying a home — home-buying cost and planning guidance.
- ONS: Housing — official housing statistics and context.
This guide is general educational information for the UK tax year 2026–27. It is not payroll, tax, employment, housing, investment or relocation advice. Check the current official guidance, offer documents and household figures before acting.
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Review notes and assumptions
Reviewed
2026-09-22
Assumptions
- The comparison uses salary, pension, student-loan, region and household-cost assumptions entered by the user. It is an educational scenario, not a payroll calculation, employment recommendation or local cost quotation.
- UK Income Tax, National Insurance, student-loan deductions, pension treatment and benefits depend on tax code, residence, payroll timing, scheme rules and the relevant tax year. Check the current official guidance and offer documents.
- Housing, commuting, childcare, council tax, utilities and moving costs vary by property and household. Entered values are planning assumptions and must not be presented as official city averages.