Brown ground beef in a skillet over medium heat until fully cooked.

Drain excess grease from the cooked ground beef.

Stir kidney beans, salt, and taco sauce into the ground beef.

Reduce heat and let the mixture simmer for 10 minutes to allow flavors to meld.

In a large serving bowl, combine chopped onion, tomatoes, lettuce, avocado, and grated cheddar cheese.

Add the ground beef mixture to the bowl of salad ingredients.

Crush taco chips and add them to the salad.

Pour Catalina dressing over the salad.

Toss all ingredients together to combine.

Serve immediately.