Fixed Costs

Fixed costs are the recurring monthly expenses that eat into your margins — things like Shopify subscriptions, tracking apps, ad agency fees, and other tools. DealDome factors these into your P&L so you get an accurate picture of actual profitability, not just gross profit. On this page, we'll cover how to manage fixed costs via the API.

Fixed costs use the products:read and products:write scopes since they're part of the same cost management domain.

The fixed cost model

The fixed cost model represents a single recurring monthly expense. Each entry has a name, amount, and currency so you can track costs in both EUR and USD.

Properties

Name
id
Type
integer
Description
Unique identifier for the fixed cost.
Name
name
Type
string
Description
A descriptive name for the expense (e.g., "Shopify", "Ad Agency").
Name
amount
Type
number
Description
The monthly cost amount.
Name
currency
Type
string
Description
The currency of the amount — EUR or USD.
Name
created_at
Type
timestamp
Description
Timestamp of when the fixed cost was created.
Name
updated_at
Type
timestamp
Description
Timestamp of when the fixed cost was last updated.

GET/fixed-costs

List all fixed costs

This endpoint returns all your fixed costs. Use it to get a full overview of your recurring monthly expenses.

Optional attributes

Name
currency
Type
string
Description
Filter by currency — EUR or USD.

Request

GET

/fixed-costs

curl -G https://api.dealdome.eu/fixed-costs \
  -H "Authorization: Bearer {token}"

Response

{
  "data": [
    {
      "id": 1,
      "name": "Shopify",
      "amount": 70.00,
      "currency": "EUR",
      "created_at": "2026-01-01T00:00:00Z",
      "updated_at": "2026-01-01T00:00:00Z"
    },
    {
      "id": 2,
      "name": "ParcelPanel",
      "amount": 11.00,
      "currency": "USD",
      "created_at": "2026-01-01T00:00:00Z",
      "updated_at": "2026-01-01T00:00:00Z"
    },
    {
      "id": 3,
      "name": "Google Workspace",
      "amount": 14.00,
      "currency": "EUR",
      "created_at": "2026-01-01T00:00:00Z",
      "updated_at": "2026-01-01T00:00:00Z"
    },
    {
      "id": 4,
      "name": "WeTracked",
      "amount": 50.00,
      "currency": "EUR",
      "created_at": "2026-01-15T00:00:00Z",
      "updated_at": "2026-01-15T00:00:00Z"
    },
    {
      "id": 5,
      "name": "Ad Agency",
      "amount": 300.00,
      "currency": "EUR",
      "created_at": "2026-02-01T00:00:00Z",
      "updated_at": "2026-02-01T00:00:00Z"
    }
  ]
}

POST/fixed-costs

Create a fixed cost

This endpoint lets you add a new recurring monthly expense. Provide the name, amount, and currency.

Required attributes

Name
name
Type
string
Description
A descriptive name for the expense.
Name
amount
Type
number
Description
The monthly cost amount.
Name
currency
Type
string
Description
The currency — EUR or USD.

Request

POST

/fixed-costs

curl https://api.dealdome.eu/fixed-costs \
  -H "Authorization: Bearer {token}" \
  -H "Content-Type: application/json" \
  -d '{"name": "Shopify", "amount": 70.00, "currency": "EUR"}'

Response

{
  "id": 1,
  "name": "Shopify",
  "amount": 70.00,
  "currency": "EUR",
  "created_at": "2026-01-01T00:00:00Z",
  "updated_at": "2026-01-01T00:00:00Z"
}

PUT/fixed-costs/:id

Update a fixed cost

This endpoint lets you update an existing fixed cost. Useful when a subscription price changes or you need to correct an entry.

Optional attributes

Name
name
Type
string
Description
The updated name.
Name
amount
Type
number
Description
The updated amount.
Name
currency
Type
string
Description
The updated currency — EUR or USD.

Request

PUT

/fixed-costs/1

curl -X PUT https://api.dealdome.eu/fixed-costs/1 \
  -H "Authorization: Bearer {token}" \
  -H "Content-Type: application/json" \
  -d '{"amount": 79.00}'

Response

{
  "id": 1,
  "name": "Shopify",
  "amount": 79.00,
  "currency": "EUR",
  "created_at": "2026-01-01T00:00:00Z",
  "updated_at": "2026-04-13T11:00:00Z"
}

DELETE/fixed-costs/:id

Delete a fixed cost

This endpoint permanently deletes a fixed cost entry. The deletion takes effect immediately and the cost will no longer be included in future P&L calculations.

Request

DELETE

/fixed-costs/5

curl -X DELETE https://api.dealdome.eu/fixed-costs/5 \
  -H "Authorization: Bearer {token}"