# Cost Allocation > Distribute shared costs across the workloads that consume them --- Site [llms.txt](/llms.txt) --- Cost-allocation rules distribute shared costs, such as support charges or shared infrastructure, across the workloads that consume them, without changing the underlying billing records. The Cost Allocation page hosts the **Custom Distribution Rules** that define this behavior. It provides: - **Distribution rules:** Create rules that take a pool of shared cost and spread it to the right consumers. - **Allocation strategies:** Split costs equally, proportionally by spend, or proportionally by usage. - **Filters:** Define which cost rows are allocated and which workloads receive them. - **Ordering:** Control the sequence in which rules execute. ## Access the Cost Allocation page 1. Log in to the CloudBolt Platform. 1. In the sidebar, select **Settings**. 1. Select **Cost Allocation**. ## Cost Allocation overview | Section | Description | | --- | --- | | Custom Distribution Rules | The ordered list of allocation rules. Each rule card shows its execution position (#1, #2, …); drag and drop cards to reorder. | | Add Rule | Opens the form to create a new cost-allocation rule. | | Rule details | Select a rule to view its full definition, edit it, or delete it. | ## Create a cost-allocation rule 1. Select **Add Rule**. 1. Enter a **Name** and, optionally, a **Description**. 1. Choose a **Strategy Type** (see below). 1. In the **Shared Cost** section, add filters that define which cost rows are the input for allocation, for example, all rows from a shared support account. 1. In the **Distribute across workloads where** section, add filters that define which entities receive the allocated costs. 1. Save the rule. ## Allocation strategies | Strategy Type | How costs are split | | --- | --- | | Equal Split | Each target workload receives the same share of the shared cost. | | Proportional by Spend | Each target's share is proportional to its spend, measured by the **Cost Basis** you choose: **Effective Cost**, **List Cost**, or **Amortized Cost**. | | Proportional by Usage | Each target's share is proportional to its consumption of the **Usage Metric** you choose. | ## Filters Both the **Shared Cost** and **Distribute across workloads where** sections use the same filter builder. Each filter is a **Field**, an operator, and a **Value**. Operators include equals (=), not equals (!=), numeric comparisons, **Contains**, **Not Contains**, **Regex**, and **In**. Where applicable, values are autocompleted from your billing data. ## Rule order Rules execute in the order shown on the list page. To change the execution order, drag and drop the rule cards. Each card displays its current position (#1, #2, …). ## Edit or delete a rule Open a rule from the list to reach its detail page, where you can edit any part of the definition or delete the rule.