It is well known that rational bubbles can be sustained in balanced growth path of a deterministic economy when the return to capital r is equal to the growth rate g. When there is a lack of stores of value, bubbles can implement an efficient allocation. This paper considers a world where r...

It is well known that rational bubbles can be sustained in balanced growth path of a deterministic economy when the return to capital <I>r</I> is equal to the growth rate <I>g</I>. When there is a lack of stores of value, bubbles can implement an efficient allocation. This paper considers a world where <I>r</I>...</i></i></i>

We provide a microfounded framework for the welfare analysis of macroprudential policy within a model of rational bubbles. For this we posit an overlapping generation model where productivity and credit supply are subject to random shocks. We find that when real interest rates are lower than the...