Project a lump sum forward with compound interest, sanity-check it against the Rule of 72, then annualize the realized return.
Project a lump sum's future value at a given rate and term.
compound_interest({"annual_rate_pct": 0.07, "years": 30})Sanity-check the doubling time implied by that same rate.
rule_of_72({"annual_rate_pct": 0.07, "years": 30})Compute the annualized growth rate once an actual ending value is known.
cagr({"beginning_value": 100, "ending_value": 100, "years": 30})