These specialised tools are designed for specific tax situations that require more detailed calculations. Whether you're a contractor dealing with IR35, have student loans, or need to calculate part-year employment, these calculators provide the precision you need.
Share Incentive Plan (SIP) Calculator 2026/27
Calculate Share Incentive Plan benefits, tax savings, employer matching, and future value with HMRC 2026/27 limits.
PAYE Tax Calculator (with student loan) 2026/27
Calculate take-home pay including Plan 1, Plan 2, Plan 4, and Postgraduate loan repayments.
Pension Contribution Tax Relief Calculator 2026/27
Calculate tax relief on pension contributions and annual allowance limits with carry forward provisions.
Side Hustle Income Tax Calculator 2026/27
Calculate tax on additional income from freelancing, trading allowance, and multiple income sources.
Part-Year Employment Tax Calculator 2026/27
Calculate tax for mid-year job changes, career breaks, or partial year employment with pro-rata calculations.
IR35 Contractor Take-Home Calculator 2026/27
Compare inside vs outside IR35 scenarios for contractor take-home pay calculations and tax implications.
When to Use Specialised Tools
Student Loans
If you have student loans, your repayments are automatically deducted from your salary. The amount depends on which plan you're on and how much you earn above the threshold.
Contractor (IR35)
IR35 rules determine whether contractors should pay tax like employees. Our calculator helps you understand the financial impact of being inside or outside IR35.
Side Income
Additional income from freelancing or side businesses may qualify for trading allowance. Our calculator helps you understand when this is beneficial.
Pension Relief
Pension contributions can provide significant tax relief, but there are annual allowance limits. Our calculator helps you optimize your contributions.