financial-math

actuary.py

This contains actuarial functions and many more financial function goodies.

Originally written in Mathematica, then translated to VBA, it made its way into Python.

1. Annuities

• Annuity Due
• Annuity Immediate
• Decreasing Annuity
• Increasing Annuity

2. Bonds

• Basic Model
• Premium/Discount
• Base Amount
• Makeham

3. Depreciation

• Straight-line
• Declining balance
• Sum of the Years Digits

demo-actuary.py

This is Python code that demonstrates a 36-month amortization loan of $120,000.

Change the parameters around to try out the functions. The monthly balance should always be the same for both prospective and retrospective methods.

Actuary.xls

The same actuarial functions, but in Excel, using VBA.

Much of this was the original material I used when teaching finacial mathematics.