LarryScott
Frequent Poster
- Messages
- 571
As for borrowers living longer than expected, the lender can't know which particular borrowers will do this, but it can know that a proportion of them will, and it must account for this in the algorithm it uses to calculate the percentage of the house value that it will lend and the interest rate that it charges. The larger the pool of borrowers, the more reliably this can be done.
Exactly. The interest rate depends on the likelihood of going into negative equity and the chances of negative equity depends on how much is borrowed as a fraction of the house price.
If the loan is a small percentage of the house's value, then the bank is unlikely to end up losing interest at the end. It is a high security long term loan.
The requirement of negative equity protection means that the interest has to be higher, or the max loan has to be lower.
A 25% loan where the interest grows at 3% faster than the house would go into negative equity after around 40 years.
In theory, a pensioner with only 10 years life expectancy could decide that they want a 50% loan and is willing to pay higher interest. In the unlikely even that they live more than 20 years, the bank would effectively get no more interest.
It could even be the direct rule. You pay x% interest for 20 years, or until death, whichever happens first.