Bring a large pot of salted water to a boil. Add macaroni and cook to al dente according to package instructions.

Drain pasta and rinse immediately under cold water to stop cooking and cool down. Drain well.

While pasta cooks, chop the red pepper, onion, and cilantro. Rinse and drain the black beans and corn.

In a small bowl, whisk together mayonnaise, sour cream, lime juice, taco seasoning, cumin, paprika, and garlic powder until smooth.

In a very large bowl, combine the cooled pasta, black beans, corn, red pepper, onion, and cilantro.

Pour the dressing over the pasta mixture and toss gently until everything is evenly coated.

Cover and refrigerate for at least 1 hour to allow flavors to meld. Stir again before serving.