Originally written in Mathematica, then translated to VBA, it made its way into Python.
- Annuities
- Annuity Due
- Annuity Immediate
- Decreasing Annuity
- Increasing Annuity
- Bonds
- Basic Model
- Premium/Discount
- Base Amount
- Makeham
- Depreciation
- Straight-line
- Declining balance
- Sum of the Years Digits
Change the parameters around to try out the functions. The monthly balance should always be the same for both prospective and retrospective methods.
Much of this was the original material I used when teaching finacial mathematics.