Weighted-average Life - Examples

Examples

On a 30-year loan, paying equal amounts monthly, one has the following WALs, for the given annual interest rates (and corresponding amortizing payments, calculated via an amortization calculator, using a principal of $100,000):

Rate Payment Total Interest WAL Calculation WAL
4% $477.42 $71,871.20 $71,871.20/($100,000*4%) 17.97
8% $733.76 $164,153.60 $164,153.60/($100,000*8%) 20.52
12% $1,028.61 $270,299.60 $270,229.60/($100,000*12%) 22.52

Note that as interest rate increases, WAL increases. WAL is independent of principal, though payments and total interest are proportional to principal.

See below for relations between amortized payments, total interest, and WAL.

Read more about this topic:  Weighted-average Life

Famous quotes containing the word examples:

    No rules exist, and examples are simply life-savers answering the appeals of rules making vain attempts to exist.
    André Breton (1896–1966)

    In the examples that I here bring in of what I have [read], heard, done or said, I have refrained from daring to alter even the smallest and most indifferent circumstances. My conscience falsifies not an iota; for my knowledge I cannot answer.
    Michel de Montaigne (1533–1592)

    It is hardly to be believed how spiritual reflections when mixed with a little physics can hold people’s attention and give them a livelier idea of God than do the often ill-applied examples of his wrath.
    —G.C. (Georg Christoph)