The Demurrage rate would be substracted from the interest rates, thus leading to cheaper loans for borrowers.
That's an effect that most people in this forum consider undesirable. On the other hand, I consider that effect (provided that the demurrage rate is lower than the "liquidity premium" and therefore does not affect the risk premium) desirable.
I don't really get why you think it is possible to artificially manipulate the risk-free interest rate without affecting the risk premium. When a borrower has the option of default, there is no distinction between risk-free interest rate and risk premium -- they are inextricably linked. And since Bitcoin isn't going to be building debtor's prisons or enforcing wealth redistribution, it would be irresponsible to build such assumptions into the system.
What I understand for liquidity premium is this: Interest rate = liquidity premium + risk premium + inflation premium
What I claim is that if demurrage rate < liquidity premium, then risk premium won't be affected by demurrage.
The liquidity premium emerges from the fact that historically monetary systems have defined money to be (nominally) time resistant. If money was made of carrots, for example, instead of gold, money would have a built in demurrage without enforcing it. If time resistance is a necessary quality of money or not is another discussion.
With risk-free loans, the lender still can (and therefore will) charge the liquidity premium and the interest won't be zero, preventing investments that economically viable (in terms of resources although not in terms of capital yield) from happening.
What prevents houses from being treated as consumer/producer goods? Liquidity premium.
If houses were consumer goods, the rent from the entire "life" of the house should just be enough to cover the cost of production (plus profit). If hoses are treated as capital, their price depends on the yield of the house (rent) compared to the yield of money (excluding the risk premium) or the liquidity premium. If a type of capital have a greater yield than money, more of that type of capital will be produced until the yield drops (by competition between the capital of the same type) and equals the yield of money. If a type of capital have a lower yield than money, no more capital of that type will be produced until its yield increases (by increasing demand) and surpasses the yield of money. Therefore the yield of money is the reference (and the limitation) for every capital accumulation. No new house will be built (even if there's demand and enough resources for it) if it won't be at least as profitable as money.
That's a feature built in and "enforced" in dollars, gold and bitcoins.
For Gesell, that liquidity premium built in "regular" money is the only "evil force in capitalism". Most pains come from regulations from the state.
I know I've repeated it many times, but you libertarians and austrians should give a chance to Gesell because his ideas are not incompatible with libertarianism. If they are, I think no Austrian economist have made a serious critique of them.
Please anyone let me know if you have read that.
Okay, so you just want to tax savers which would indirectly benefit borrowers. We get that. But if the demurrage is close to the actual cost of securing the network, then the effect is nil. So couching your argument in terms of borrowing and lending just seems out of place.
If you think the effect of a demurrage close to the actual cost of securing the network is nil, then I don't need to convince you that demurrage won't have evil effects (at least not in this thread), but not everybody here think that way.