Savings & investing calculators

Explore savings and investment scenarios with explicit assumptions.

Project a savings balance from an initial amount and monthly contributions, with AER, contribution timing and inflation.

Plan after-tax retirement income from multiple pension pots, State Pension, guaranteed pensions and savings, with annual withdrawals and shortfalls.

Calculate units, average purchase cost including fees and unrealised gain from equal or unequal investment purchases.

Estimate European call and put values using Black–Scholes–Merton, a continuous dividend yield and user-entered assumptions.

Size long share positions or FX lots from a chosen risk budget, stop distance, costs and GBP pip value.

Generate a transparent Square of Nine price grid from a reference price, scale and angle convention, without live data.

Calculate Camarilla R1–R5 and S1–S5 levels from a completed session’s high, low and close, with a central pivot.

Calculate investment profit, total ROI and an equivalent annualised return after purchase and sale costs.

Plan an equal-contribution kameti or ROSCA, including payout date, contributions still due and the complete cash-flow schedule.