--- updatedAt: 2026-07-22T14:57:18.000Z agentTools: siteIndex: https://docs.recurly.com/llms.txt projectIndex: https://docs.recurly.com/recurly-subscriptions/llms.txt --- # Add-ons Elevate your subscription model with Recurly's versatile Add-ons. Tailor pricing, design unique add-ons or reuse items across plans, and enjoy flexible billing options. Streamline your product setup and enhance your offerings effortlessly.
Add-ons let you attach additional charges to a subscription plan — billed each period alongside the base charge. Whether you're building a unique add-on from scratch or reusing an item from your catalog across multiple plans, Recurly gives you the flexibility to package your products exactly the way your business needs.
Available on all Recurly plans
1Definition 2Key benefits 3Create an add-on 4Configure item add-ons on subscriptions
# Definition
Add-ons are additional charges billed each billing period alongside a subscription's base charge. You can associate one or more add-ons with each plan, and add-ons can be unique to a plan or created from an item in your item catalog — making it easy to reuse them across multiple plans without duplicating your setup.
# Key benefits
Versatility Design an add-on from scratch, or derive one from an item in your item catalog to reuse it across multiple plans.
Deep customization Define add-ons with full control over type, name, code, accounting code, pricing model, price, tiers, taxes, and quantity options.
Flexible billing options Bill add-ons up front or in arrears using usage-based billing — whichever fits your revenue model.
Four pricing models Choose from fixed price, tiered, volume, and stairstep pricing to meet the needs of diverse business models and customer segments.
Items on subscriptions Configure item-based add-ons directly on customer subscriptions for streamlined operations without plan-level setup.
# Create an add-on
1

Navigate to plan settings

Open the plan you want to add to — either through the Recurly Admin Console or via the Plans or Add-ons API endpoints.

2

Choose your add-on type

Create an add-on unique to this plan, or select a saved item from your catalog to use as the basis for the add-on.

Add-on type selection — unique to plan or from item catalog
3

Define the add-on properties

Configure the add-on's type, name, code, accounting code, HS code, pricing model, price, tiers, taxes, and quantity options. If you're creating an item-based add-on, some properties will auto-populate from the catalog item.

Add-on properties form
FieldDescription
Accounting codeA unique code to identify this add-on in your internal invoice exports. Configure based on your tax settings and compliance requirements. Limit: 25 lowercase alphanumeric characters.
HS code / Commodity codeAn HS or Commodity code for invoice compliance on traded products. HS codes are at least six digits, with countries adding digits for regional classification. Limit: 25 lowercase alphanumeric characters.
4

Save your changes

Click Save to finalize the add-on and attach it to the plan.

# Configure item add-ons on subscriptions You can configure item-based add-ons directly on customer subscriptions — no plan-level setup required first.
1

Set up your item catalog

Follow the instructions in the item catalog documentation to create and manage the items you want to use as add-ons.

2

Add the item directly to the subscription

Once your item is in the catalog, you can attach it to a customer subscription without configuring its availability on the plan first.

# Sub pages * [Decimal pricing](https://docs.recurly.com/recurly-subscriptions/docs/decimal-pricing.md) # Sibling pages * [Plans](https://docs.recurly.com/recurly-subscriptions/docs/plans.md) * [Item catalog](https://docs.recurly.com/recurly-subscriptions/docs/catalog.md)