https://en.wikipedia.org/wiki/Marquette_National_Bank_of_Min....
Prior to that, usury laws existed in most states that restricted consumer loans to something like 5-13%.
Personally I don’t have an issue with the concept of interest itself, but if you look at the huge amount of Americans in debt paying 20-30% on credit cards, it certainly seems excessive and usurious to me.
There was once a so called fair profit rate of 4% in the middle ages and early modern age, in Hungary. Greek wine traders operating there featured the number 4 on their seals and ornaments of their houses. (They were also often tried for violating this rule)
In those ages of course there was no constant inflation in the current sense, gold standard was used for payments, etc.
source, in Hungarian language, the site of the greek ethnic minority's cultural institute (the pictures feature one such ornament): https://gorogintezet.hu/kultura/2022/07/gorog-kereskedok-sze...
https://gorogintezet.hu/wp-content/uploads/2022/08/15264.jpg
<cough> buy here pay here car lots <cough>.
Then, in the Middle Ages, Catholic theologians added nuance introducing a concept of time value of money - ie when you lend out $100 you also lose the ability to use that $100 for the time of the loan. The concept of a small interest rate was adopted.
Which is fine, except it opened the flood gates until we eventually got the high interest rates we have today.
What makes our rates usurious? That they are issued with the issuer knowing the principal will never be paid off.
Also, the deflationary effects of high interest rates are not because it causes unemployment, but because it reduced the rate of increase of the money supply.
Of course, lowered money is recessionary, which leads to unemployment which puts downward pressure on wages; but wages aren't the reason for inflation - the increase in monetary mass is.
This part I have small nitpick about:
> Also, the deflationary effects of high interest rates are not because it causes unemployment, but because it reduced the rate of increase of the money supply.
I would prefer to say: reduced money supply has an indirect effect upon unemployment. If it costs more to borrow money, corps will expand slower (fewer new jobs), or reduce costs (labour) to increase profits.It's hard to see how that's not synonymous with increased unemployment, particularly given the oft quoted Phillips curve and the NAIRU.
The alternative non-usurious loan would require you to post some other kind of security to receive the money, such as giving the lender the use of some other productive land until the principal debt is paid. More like pawning something at a pawn shop and then buying it back when you get paid.
I'm not an expert on this - how does this idea differ from that of 'seigniorage' where the sovereign can profit from the creation of money?
Your example only addresses the buying power of the sovereign; it's not obvious that it should affect the prices of goods between private parties.
[1]: (PDF) https://opensiuc.lib.siu.edu/cgi/viewcontent.cgi?article=501...
[2]: (PDF) https://history.hanover.edu/hhr/18/HHR2018-fergus.pdf
Its at a smaller scale, but it can be seen with counterfeit currency today. Cash-heavy businesses have to absorb whatever amount of counterfeits they accept, so they are really valuing your dollar at $0.99 if they might have to throw it out.