This section is from the book "The Better Homes Manual", by Blanche Halbert. Also available from Amazon: The Better Homes Manual.
Although for generations the building and loan associations of the country have been lending funds for home buying and home building on a scientific and widely known monthly repayment basis, there is considerable misinformation current as to the proportion of the monthly payment applied to interest. It is often thought that the interest portion is much larger than it actually is, and, in fact, the idea is lodged in many minds that "half the monthly payment is credited to interest and half to principal."
This impression may have been originally obtained as a result of the experience of borrowers who have dealt with organizations which have misused the building and loan name and engaged in irregular practices. Or, it may have resulted from a careless examination of published building and loan tables like Table III, showing the retirement of a $1,000 six per cent loan through monthly payments of $10 each over a period of about 139 months.
A glance at the "Payments" column and the "Interest" column, which show entries of $120 in one and $60 in the other, might easily mislead the layman into thinking that the interest is one-half the payment. Of course, those familiar with building and loan financing understand that the dividends must be subtracted from the interest - which is actually gross interest - in order to find the net interest charge, and that the "Loan Out-standing" column must be referred to in accounting for the disposition of the $120 yearly payments. Thus, at the end of the first year the situation is shown as follows:
Month | Payments | Loan Outstanding | Interest | Dividends |
12....... | $120 | $938.24 | $60.00 | $ 1.6615 |
24....... | 120 | 872.92 | 60.00 | 5.4160 |
36....... | 120 | 803.52 | 60.00 | 9.4005 |
48....... | 120 | 729.90 | 60.00 | 13.6265 |
60....... | 120 | 651.78 | 60.00 | 18.1110 |
72....... | 120 | 568.92 | 60.00 | 22.8675 |
84....... | 120 | 481.00 | 60.00 | 27.9140 |
96....... | 120 | 387.73 | 60.00 | 33.2685 |
I08....... | 120 | 288.79 | 60.00 | 38.9480 |
I20....... | I20 | 183.81 | 60.00 | 44.9740 |
132....... | I20 | 72.45 | 60.00 | 51.3670 |
139....... | 70 | 4.32 | 35.00 | 33.13 |
140....... | 10 | -5.64 | 5.00 | 4 .95 |
$I,400-$5.64 | $700.00 | $305.6390 | ||
Gross interest................... | .$60.00 |
Less dividends.................... | . 1.66 |
Net interest................. | .$58.34 |
Original principal....... | $1,000.00 |
Less loan outstanding.. . | 938.34 |
Applied to principal. | .$ 61.66 |
Net Interest........................ | .$ 58.34 |
On principal............................. | . 61.66 |
Total payments....... | .$120.00 |
 
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