The assumptions in the macroeconomic models for establishing long-run growth are:

1.) In the long run, the model is designed in nominal terms. It includes the effect of inflation in cost or revenue.

2.) Another assumption of the macroeconomic model is the risk-free interest rate. The minimum expected return of investors is estimated by using risk-free assets.

3.) When the borrowings are in foreign currency or if there is any source of foreign capital, exchange rates are a relevant concept.