GrowthRate

GrowthRate models benefit revaluation schedules for life annuities and insurances. It supports:

• Geometric (compound) growth: \(F(t) = \prod_{j=0}^{t-1}(1+g_j)\)

• Arithmetic (linear additive) growth: \(F(t) = 1 + \sum_{j=0}^{t-1} g_j\)

where \(F(0) = 1\) under the standard actuarial convention (apply_from_first=False).

Like InterestRate, growth rates can be constant, piecewise (segment rates with durations), or multi-scenario. shifted() generates time-shifted copies for prospective reserve calculations.

See also

Growth Rates — Full guide to growth rate modeling.
Growth Rate Conventions — Anniversary convention used by the annuity engine.