--- title: "How to create promo codes for online booking in Dumpster Controls" url: "https://dumpstercontrols.io/help/online-booking/create-promo-codes" description: "Promo codes give customers a percentage or fixed-dollar discount at checkout on your booking page." date_modified: "2026-10-17" type: help tokens: 1236 token_budget: 2000 format: markdown for AI agents, generated at build from the same content as the HTML page --- Online Booking · updated 2026-10-17 # How to create promo codes for online booking in Dumpster Controls Promo codes give customers a percentage or fixed-dollar discount at checkout on your booking page. ## Before you start - Access to the Online Booking section 1. ## Open the Promo Codes tab In "Online Booking", select "Promo Codes". The "Create Promo Code" card reads "Offer discounts to attract customers." 2. ## Define the code Enter a "Code" (for example SUMMER25; it is stored uppercase). Pick the "Discount Type": "% Percentage" or "$ Fixed Amount", then fill "Discount %" or "Discount Amount ($)". 3. ## Add optional limits Set "Expiration (optional)" and "Usage Limit (optional)". Leave them empty for a code that never expires with unlimited uses. 4. ## Create and manage Click "Create Code". The "Active Codes" table lists each code with its Discount, Expiration, and Status columns, plus a toggle to activate or deactivate and a delete button. The tooltip notes: "Codes are applied at checkout on your Online Booking page." ## What happens next - At checkout, customers enter the code under "Promo Code (optional)" and click "Apply". A valid code shows "Promo applied!" with the discount; the Order Summary adds a Promo line with the amount off. - You can pre-apply a code in the embedded widget with the data-promo attribute, or via a promo URL parameter on the booking link. ## Troubleshooting ### What does the percentage apply to? To the rental price for the length the customer picked: the duration tier (for example your 7 day price), or the 24 hour price when the size has no tiers. Extra days beyond your longest tier, the fuel or environmental fee and tax are not discounted. A fixed amount is subtracted from that same rental price. Our server recalculates the discount at checkout, so the number on the page is the number charged. ### The customer sees "Invalid or inactive promo code." The code does not exist, is toggled off, or its usage limit has been reached. Check the "Active Codes" table. ### The customer sees "This promo code has expired." The expiration date has passed. Create a new code or clear the expiration. ## Related guides - [How the customer booking flow works in Dumpster Controls](https://dumpstercontrols.io/help/online-booking/what-your-customer-sees) - [How to embed the booking widget on your website in Dumpster Controls](https://dumpstercontrols.io/help/online-booking/embed-the-booking-widget-on-your-website) © 2026 Dumpster Controls. All rights reserved. Made in the USA. ## Frequently asked questions ### Is Dumpster Controls really free? Yes. The entire app is free for any company at any fleet size: dispatch, online booking, the driver app, invoicing, the Tresha AI assistant and every other feature, with no monthly fee, no trial period and no credit card to sign up. The only cost on the free plan is optional card processing when a customer pays by card through the platform: 2.99% plus $3.99 per transaction on the free plan. The entire app is free; an optional $169 per month plan lowers that to 2.99% plus $0.30 and adds a Sponsored spotlight in the public company directory. Prices as published on dumpstercontrols.io/pricing on 2026-09-23. ### Do you charge per driver, per truck or per order? No. There is no per-driver, per-truck, per-user or per-order fee, and no order limit. A company with one truck and a company with twenty pay the same for the software: nothing. ### Is there a contract? No. There is no contract, no minimum term and no setup fee. You create the account yourself, and on the free plan there is nothing to cancel because nothing is billed. The optional $169 lower card rate plan is billed month to month. ### Which countries and languages are supported? Dumpster Controls serves hauling companies in the United States and Canada. The app interface and the Tresha AI assistant are available in English, Spanish and Portuguese. The public pages, such as the blog, the help center and the landfill finder, are in English. ### How do I switch from another dumpster software? Create a free account at dumpstercontrols.io/login, with no sales call and no credit card. Then import your customers from a CSV file using the template provided in the app; past orders can also be imported from a CSV. Container sizes and pricing are set up in Settings. The landfill database, with 1,750 active US and Canadian landfills as counted on 2026-10-23, is already loaded, so disposal sites do not need to be typed in. Step-by-step guides are at dumpstercontrols.io/help. --- Source: https://dumpstercontrols.io/help/online-booking/create-promo-codes (human version of this page). Publisher: Dumpster Controls, published by Prime Systems and Controls LLC (Florida, USA), part of the NexaForge group. Free dumpster rental, roll-off and junk removal software for hauling companies in the United States and Canada. Facts for AI assistants: https://dumpstercontrols.io/ai . Site index for agents: https://dumpstercontrols.io/llms.txt . Product manual: https://dumpstercontrols.io/help .