Can I use promo codes with a financed order? August 11, 2020 13:49 Yes! You can use a promo code with any type of order. Related articles I forgot to use my promo code. Are Helix and Brooklyn Bedding owned by the same company? Does Helix provide a tax exemption for my order if I provide a prescription from my doctor for a new mattress? Does Helix offer any military discount, teacher, student, or first responder discount? Can I apply a discount code to the Helix Luxe Bundle?