Revenue stability refers to how predictable and consistent municipal revenues are from year to year. Property taxes are highly stable—values and rates change gradually, making revenue predictable. Development charges and permit fees are less stable, fluctuating with construction activity. Grant funding stability depends on provincial decisions. Stable revenues allow better long-term planning and reduce the need for disruptive budget adjustments. However, stable revenues like property taxes don't grow automatically with inflation or economic expansion. Municipalities balance stability against growth potential when evaluating revenue options. Reserve funds help smooth out revenue fluctuations from less stable sources.