Preheat the oven to 350°F (175°C) and grease a loaf pan.

In a mixing bowl, cream together softened butter and sugar until light and fluffy (about 3-5 minutes).

Beat in eggs one at a time, ensuring each is fully mixed in before adding the next.

Stir in fresh orange juice and zest until well combined.

In another bowl, whisk together flour, baking powder, and salt; gradually add this mixture to the wet ingredients, mixing just until combined.

Pour the batter into the prepared loaf pan and smooth the top.

Bake for 50-60 minutes or until a toothpick inserted into the center comes out clean. Let cool slightly before removing from the pan.