> ## Documentation Index > Fetch the complete documentation index at: https://docs.partnero.com/llms.txt > Use this file to discover all available pages before exploring further. # What commissions are calculated on > Which sale amount Partnero uses for percentage commissions, how tax, shipping and discounts are treated, and what happens when a payment is refunded A percentage commission is calculated on the **transaction amount** that Partnero records for a sale. Which amount that is depends on where the sale comes from. For the native integrations, Partnero takes it from the payment provider and, in most cases, leaves out tax and shipping. Fixed (static) commissions are not affected — the partner earns the same amount whatever the sale was worth. ## Commission base by integration | Source | Amount used | Tax | Shipping | Discounts | | - | - | - | - | - | | **Stripe** subscriptions and invoices | Invoice total after discounts | Excluded | Not applicable | Already deducted | | **Stripe** one-time Checkout and Payment Links | Order total after discounts | Excluded | Excluded | Already deducted | | **Stripe** charges made outside Checkout | Full amount charged | Included | Included | Already deducted | | **Shopify** | Order subtotal after discounts | Excluded | Excluded | Already deducted | | **WooCommerce** (plugin) | Order line items after discounts | Your choice: NET or GROSS | Your choice: off by default | Already deducted | | **Paddle Billing** | Subtotal after discounts | Excluded | Excluded | Already deducted | | **Chargebee** | Amount of the Chargebee payment | Included | Included | Already deducted | | **API and JavaScript** | The `amount` you send | You decide | You decide | You decide | Payment provider fees (for example Stripe's processing fee) are never deducted. > [!TIP] > > The quickest way to confirm the amount is a test purchase: open the transaction in Partnero and compare its > amount with the order or invoice in your store. ### Stripe * **Subscriptions and invoices** use the invoice total after discounts and before tax, so any sales tax or VAT that Stripe collects is left out. * **One-time purchases through Stripe Checkout or Payment Links** use the order total minus tax and shipping. This works whether your prices include tax or not. * **Charges created directly through the Stripe API** (not through Checkout) don't carry a tax or shipping breakdown, so the full amount charged is used. Send transactions through the [API](https://docs.partnero.com/api-reference/transactions/create.md) instead if you need a different amount. * **Stripe Managed Payments** (Stripe as merchant of record) is tracked the same way. Stripe still creates the invoices and charges in your account. Prices are shown in the customer's local currency, so transactions may be recorded in that currency — see [Handling sales in multiple currencies](https://docs.partnero.com/knowledge-base/commissions-rewards/handling-sales-in-multiple-currencies.md). > [!NOTE] > > If you connected Stripe through the Stripe App, Partnero needs permission to read Checkout Sessions to leave out > tax and shipping on one-time purchases. Without it, Partnero uses the full amount charged and shows a notification > in your account. ### Shopify Partnero uses the order subtotal: the price of the products after discounts, without shipping, duties, taxes and tips. > [!WARNING] > > If your store displays prices with tax included, Shopify's subtotal includes that tax, so the commission does too. ### WooCommerce The [WooCommerce plugin](https://docs.partnero.com/integrations/woocommerce.md) adds up the order's line items after discounts and lets you choose the rest: * **NET or GROSS** — NET (the default) leaves tax out. GROSS adds the tax charged on the products. * **Include shipping** — off by default. When it's on, the shipping cost is added (and shipping tax too, if GROSS is selected). * **Excluded categories** — products in these categories don't count towards the amount at all. ### Paddle Billing Partnero uses the transaction subtotal after discounts, before shipping, duties and taxes. ### Chargebee Partnero uses the amount of the payment as Chargebee reports it, which includes any tax you charge. ### API and JavaScript Partnero calculates the commission on the `amount` you send. Send the amount you want partners to earn on — for example, the order total without tax and shipping. See [Create a transaction](https://docs.partnero.com/api-reference/transactions/create.md). ## Discounts The amount used is always the price after the customer's discount. A 15% commission on a $100 order with a $20 coupon is 15% of \$80. If you also want partners to earn a **lower commission rate** when a discount code is used, see [Adjust affiliate commission when a discount code is used](https://docs.partnero.com/knowledge-base/commissions-rewards/adjust-affiliate-commission-when-a-discount-code-is-used.md). To pay commission only on some products, use [product-based commissions](https://docs.partnero.com/knowledge-base/commissions-rewards/create-product-based-commissions.md). ## Refunds When a refunded payment reaches Partnero, what happens to the commission depends on how far along it is. | Commission status when the refund arrives | What happens | | - | - | | In the review period | The commission is cancelled and never becomes available to the partner | | Approved, not yet paid out | The commission is cancelled and removed from any payout request that isn't finished | | Already paid out | Nothing changes automatically. The money isn't recovered from the partner or deducted from future commissions | Commissions that were already paid have to be settled with the partner yourself. To avoid this, set a [commission review period](https://docs.partnero.com/knowledge-base/commissions-rewards/approve-or-reject-commission-in-review.md) at least as long as your refund window. ### Partial refunds | Source | Partial refund | | - | - | | **Stripe** | The commission is recalculated on what's left. The refund reduces the amount proportionally, so tax and shipping are never counted twice | | **Shopify** | The commission is recalculated on what's left of the order | | **Paddle Billing** | The commission is recalculated on what's left after the adjustment | | **WooCommerce** | Not applied. Only a full refund or cancellation removes the commission | | **Chargebee** | Not applied. Only a full refund removes the commission | | **API** | Delete the transaction and create a new one with the remaining amount | For partial refunds that aren't applied automatically, you can decline the commission while it's still in review (see [Manage commissions from the partner profile](https://docs.partnero.com/knowledge-base/commissions-rewards/manage-commissions-from-the-partner-profile.md)), or use the API to [delete the transaction](https://docs.partnero.com/api-reference/transactions/delete.md) and create a new one with the remaining amount. This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.