Update project billing settings

How to update billing settings: This endpoint allows partial updates to project billing settings. Only the fields you provide will be updated; all other fields remain unchanged. The endpoint automatically merges your partial update with the current settings.

Invoice structure options:

allowMixedBilling (true): Combined invoices - bill support efforts (by booked hours) and subscriptions on a single invoice
allowMixedBilling (false): Split invoices - support invoices are generated separately from subscription invoices

Billing rules:

bugsAreBillable: Set whether time spent on tasks with “Bug” activity can be billed to the customer

Default invoice recipient:

invoiceContactId: Select a contact person from the customer organization (OrganizationMember ID). This person will be auto-filled when creating invoices, but can be changed during invoice creation. Set to null to remove the default recipient.

Billing version snapshots (Single projects only):

billingProjectSnapshotId: Select which project version will be used as the basis for billing. Includes components, manual items, and products as agreed in that version.
productsBillingProjectSnapshotId: Optionally select a separate version for billing subscriptions independently of the project scope. If empty, the main billing version is used automatically.

Permission requirements: Requires both Projects.edit AND Invoices.manage permissions to update billing settings.

PATCH/projects/{id}/billing-settings

Authorization

AuthorizationOAuth2 access token · headerrequired

Scopes:api:write

AuthorizationBearer token (JWT) · headerrequired

Path parameters

idstring<uuid>required

Project ID

Request body

requiredapplication/json

allowMixedBillingboolean

Controls invoice structure: true = combined invoices (support and subscriptions on one invoice), false = split invoices (support invoices generated separately). Optional field - if not provided, current value remains unchanged.

billingProjectSnapshotIdobject | null

Project version snapshot ID used as the basis for main billing. Only applicable for Single project type. The selected version determines what items and prices are included when generating invoices. Optional field - if not provided, current value remains unchanged.

bugsAreBillableboolean

Determines whether time spent on tasks with "Bug" activity type can be billed to the customer. Optional field - if not provided, current value remains unchanged.

includeComponentsInBillingboolean

When true, component hours and amounts are included in estimates and invoices. When false, component totals are excluded. Optional field - if not provided, current value remains unchanged.

invoiceContactIdobject | null

Default invoice recipient contact person from the customer organization (OrganizationMember ID). This person is auto-filled when creating invoices but can be changed during invoice creation. Set to null to remove the default recipient. Optional field - if not provided, current value remains unchanged.

productsBillingProjectSnapshotIdobject | null

Project version snapshot ID used for billing subscriptions independently of the main project scope. Only applicable for Single project type. If not set, the main billing version is used automatically. Optional field - if not provided, current value remains unchanged.

Responses

200Project billing settings updated successfully

successbooleanrequired

Operation success flag

400Invalid input - validation errors or missing required conditional fields

401Unauthorized - Invalid or missing authentication token

403User lacks Projects.edit or Invoices.manage permission

404Project not found or user does not have access

Request

curl -X PATCH "https://leadtime.app/api/public/projects/%3Cuuid%3E/billing-settings" \
  -H "Authorization: Bearer YOUR_ACCESS_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
  "allowMixedBilling": false,
  "billingProjectSnapshotId": "123e4567-e89b-12d3-a456-426614174002",
  "bugsAreBillable": false,
  "includeComponentsInBilling": false,
  "invoiceContactId": "123e4567-e89b-12d3-a456-426614174001",
  "productsBillingProjectSnapshotId": "123e4567-e89b-12d3-a456-426614174003"
}'

const response = await fetch("https://leadtime.app/api/public/projects/%3Cuuid%3E/billing-settings", {
  method: "PATCH",
  headers: {
    "Authorization": "Bearer YOUR_ACCESS_TOKEN",
    "Content-Type": "application/json"
  },
  body: JSON.stringify({
  "allowMixedBilling": false,
  "billingProjectSnapshotId": "123e4567-e89b-12d3-a456-426614174002",
  "bugsAreBillable": false,
  "includeComponentsInBilling": false,
  "invoiceContactId": "123e4567-e89b-12d3-a456-426614174001",
  "productsBillingProjectSnapshotId": "123e4567-e89b-12d3-a456-426614174003"
})
});

import requests

response = requests.patch(
    "https://leadtime.app/api/public/projects/%3Cuuid%3E/billing-settings",
    headers={
        "Authorization": "Bearer YOUR_ACCESS_TOKEN",
        "Content-Type": "application/json"
    },
    json={
  "allowMixedBilling": False,
  "billingProjectSnapshotId": "123e4567-e89b-12d3-a456-426614174002",
  "bugsAreBillable": False,
  "includeComponentsInBilling": False,
  "invoiceContactId": "123e4567-e89b-12d3-a456-426614174001",
  "productsBillingProjectSnapshotId": "123e4567-e89b-12d3-a456-426614174003"
},
)

Response

{
  "success": true
}