For employees and self-employed — take-home pay, tax thresholds, stamp duty.

Watch your money grow — compound interest, savings goals, ISA limits.

Long-term wealth planning — FIRE, drawdown, historical returns, XIRR.

Monthly repayments, overpayment savings, invest vs overpay comparison.

Clear debt faster — snowball and avalanche payoff strategies side by side.

Model the impact of deferring pension contributions or retirement date.