Heat oven to 350℉/177℃.
Spray 9-inch x 4-inch loaf pan with baking spray, or grease and flour it.
Sift flour, baking soda, baking powder, salt, cinnamon, nutmeg, allspice, and ginger together together in a medium bowl. Set aside.
In a medium bowl, whisk the pumpkin and eggs together. Set aside.
In the bowl of a stand mixer fitted with the paddle attachment, beat butter and sugar until creamy, 2-3 minutes.
Beat in pumpkin mixture.
Add dry ingredients.
Mix until smooth.
Spoon into prepared pan.
Spread batter evenly.
Bake for 60-70 minutes, or until bread tests done. You may need to cover with aluminum foil the last 10-15 minutes of baking.