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Income & Tax
Savings
Investments
Mortgage
Debt
Pensions
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Salary
Compound Interest
Mortgage Repayment
FIRE Calculator
Pension Drawdown
ISA Calculator
Savings Goal
Stamp Duty
Income & Tax
2
Take-Home Pay / Salary Calculator
Exact net pay after income tax, NI, pension and student loan. Updated for 2025/26.
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Stamp Duty Calculator
SDLT on any UK property including first-time buyer and second-home rates.
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Savings & Interest
3
Compound Interest Calculator
See how savings grow over time at different interest rates and contribution levels.
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Savings Goal Calculator
How long to reach a target, or what monthly saving you need.
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ISA Calculator
Model ISA growth using your annual allowance across stocks, cash or LISA.
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Investments
4
FIRE Calculator
Your financial independence number and the exact year you could stop working.
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Retirement Drawdown Simulator
Stress-test your pension pot against every historical market scenario.
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Investment Returns Simulator
Historical rolling returns for equities, bonds and mixed portfolios.
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Personal Investment Return (XIRR)
Your true annualised return accounting for irregular cash flows.
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Mortgage
3
Mortgage Repayment Calculator
Monthly payments, total interest paid, and full amortisation schedule.
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Mortgage Overpayment Calculator
How much interest and time you save by overpaying each month.
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Invest or Overpay Calculator
Compare the outcome of investing spare cash versus overpaying your mortgage.
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Debt
2
Debt Snowball Calculator
Pay smallest balances first — quick wins that build momentum.
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Debt Avalanche Calculator
Target highest-interest debts first — mathematically optimal repayment.
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Pensions
1
Pension Deferral Calculator
The benefit of delaying your state or private pension for a higher income later.
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