Budgets

Update existing budget.

PUT

https://firefly.example.com/api/v1/budgets/{id}

Update existing budget. This endpoint cannot be used to set budget amount limits.

curl -X PUT 'https://firefly.example.com/api/v1/budgets/123' \
  -H 'X-Trace-Id: 40c71bbb-c676-4f24-83cf-cc725d7d7a00' \
  -H 'Authorization: Bearer YOUR_TOKEN' \
  -H 'Content-Type: application/json' \
  --data-raw '{
  "name": "Bills",
  "active": false,
  "order": 5,
  "notes": "Some notes",
  "fire_webhooks": true,
  "auto_budget_type": "reset",
  "auto_budget_currency_id": "12",
  "auto_budget_currency_code": "EUR",
  "auto_budget_amount": "-1012.12",
  "auto_budget_period": "monthly"
}'

const body = `{
  "name": "Bills",
  "active": false,
  "order": 5,
  "notes": "Some notes",
  "fire_webhooks": true,
  "auto_budget_type": "reset",
  "auto_budget_currency_id": "12",
  "auto_budget_currency_code": "EUR",
  "auto_budget_amount": "-1012.12",
  "auto_budget_period": "monthly"
}`;

const response = await fetch('https://firefly.example.com/api/v1/budgets/123', {
  method: 'PUT',
  headers: {
    'X-Trace-Id': '40c71bbb-c676-4f24-83cf-cc725d7d7a00',
    'Authorization': 'Bearer YOUR_TOKEN',
    'Content-Type': 'application/json',
  },
  body,
});

const data = await response.text();

import requests

body = '''{
  "name": "Bills",
  "active": false,
  "order": 5,
  "notes": "Some notes",
  "fire_webhooks": true,
  "auto_budget_type": "reset",
  "auto_budget_currency_id": "12",
  "auto_budget_currency_code": "EUR",
  "auto_budget_amount": "-1012.12",
  "auto_budget_period": "monthly"
}'''

response = requests.put(
    'https://firefly.example.com/api/v1/budgets/123',
    data=body.encode('utf-8'),
    headers={
        'X-Trace-Id': '40c71bbb-c676-4f24-83cf-cc725d7d7a00',
        'Authorization': 'Bearer YOUR_TOKEN',
        'Content-Type': 'application/json',
    },
)
print(response.text)

Request Body

{
  "name": "Bills",
  "active": false,
  "order": 5,
  "notes": "Some notes",
  "fire_webhooks": true,
  "auto_budget_type": "reset",
  "auto_budget_currency_id": "12",
  "auto_budget_currency_code": "EUR",
  "auto_budget_amount": "-1012.12",
  "auto_budget_period": "monthly"
}

{
  "name": "Bills",
  "active": false,
  "order": 5,
  "notes": "Some notes",
  "fire_webhooks": true,
  "auto_budget_type": "reset",
  "auto_budget_currency_id": "12",
  "auto_budget_currency_code": "EUR",
  "auto_budget_amount": "-1012.12",
  "auto_budget_period": "monthly"
}

{
  "data": {
    "type": "budgets",
    "id": "2",
    "attributes": {
      "created_at": "2026-10-01T00:00:00+00:00",
      "updated_at": "2026-10-01T00:00:00+00:00",
      "active": false,
      "name": "Bills",
      "order": 5,
      "notes": "Some notes",
      "auto_budget_type": "reset",
      "auto_budget_period": "monthly",
      "object_group_id": "5",
      "object_group_order": 5,
      "object_group_title": "Example Group",
      "object_has_currency_setting": true,
      "currency_id": "5",
      "currency_name": "Euro",
      "currency_code": "EUR",
      "currency_symbol": "$",
      "currency_decimal_places": 2,
      "primary_currency_id": "5",
      "primary_currency_name": "Euro",
      "primary_currency_code": "EUR",
      "primary_currency_symbol": "$",
      "primary_currency_decimal_places": 2,
      "auto_budget_amount": "-1012.12",
      "pc_auto_budget_amount": "-1012.12",
      "spent": [
        {
          "currency_id": "5",
          "currency_code": "USD",
          "currency_symbol": "$",
          "currency_decimal_places": 2,
          "sum": "123.45"
        }
      ],
      "pc_spent": [
        {
          "currency_id": "5",
          "currency_code": "USD",
          "currency_symbol": "$",
          "currency_decimal_places": 2,
          "sum": "123.45"
        }
      ]
    }
  }
}

{
  "message": "Bad Request",
  "exception": "BadRequestHttpException"
}

{
  "message": "Unauthenticated",
  "exception": "AuthenticationException"
}

{
  "message": "Resource not found",
  "exception": "NotFoundHttpException"
}

{
  "message": "The given data was invalid.",
  "errors": {
    "email": [
      "string"
    ],
    "force": [
      "string"
    ],
    "blocked": [
      "string"
    ],
    "field": [
      "string"
    ],
    "role": [
      "string"
    ],
    "blocked_code": [
      "string"
    ],
    "name": [
      "string"
    ],
    "type": [
      "string"
    ],
    "iban": [
      "string"
    ],
    "start": [
      "string"
    ],
    "end": [
      "string"
    ],
    "date": [
      "string"
    ]
  }
}

{
  "message": "Internal Exception",
  "exception": "InternalException"
}

Body

JSON array with updated budget information. See the model for the exact specifications.

application/json,application/x-www-form-urlencodedBudgetUpdate

namestringrequired

Example

Bills

activeboolean

Example

false

orderinteger<int32>

Example

notesstring | null

Example

Some notes

fire_webhooksbooleantrue

Whether or not to fire the webhooks that are related to this event.

Example

true

auto_budget_typeAutoBudgetType | nullresetrollovernonenull

The type of auto-budget that Firefly III must create.

Example

reset

auto_budget_currency_idstring | null

Use either currency_id or currency_code. Defaults to the user's financial administration's currency.

Example

auto_budget_currency_codestring | null

Use either currency_id or currency_code. Defaults to the user's financial administration's currency.

Example

EUR

auto_budget_amountstring<amount> | null

Example

-1012.12

auto_budget_periodAutoBudgetPeriod | nulldailyweeklymonthlyquarterlyhalf-yearyearlynull

Period for the auto budget

Example

monthly

Parameters

idstringrequiredpath

The ID of the budget.

Response

200OKBudgetSingle

Updated budget stored, result in response

Response fields application/vnd.api+json

dataBudgetReadrequired

Show child attributes

typestringrequired

Immutable value

Example

budgets

idstringrequired

Example

attributesBudgetPropertiesrequired

Show child attributes

created_atstring<date-time>read only

Example

2026-10-01T00:00:00+00:00

updated_atstring<date-time>read only

Example

2026-10-01T00:00:00+00:00

activeboolean

Example

false

namestringrequired

Example

Bills

orderinteger<int32>read only

Example

notesstring | null

Example

Some notes

auto_budget_typeAutoBudgetType | nullresetrollovernonenull

The type of auto-budget that Firefly III must create.

Example

reset

auto_budget_periodAutoBudgetPeriod | nulldailyweeklymonthlyquarterlyhalf-yearyearlynull

Period for the auto budget

Example

monthly

object_group_idstring | null

The group ID of the group this object is part of. NULL if no group.

Example

object_group_orderinteger<int32> | nullread only

The order of the group. At least 1, for the highest sorting.

Example

object_group_titlestring | null

The name of the group. NULL if no group.

Example

Example Group

object_has_currency_settingbooleanread only

Indicates whether the object has a currency setting. If false, the object uses the administration's primary currency.

Example

true

currency_idstring

The currency ID of the currency associated with this object.

Example

currency_namestring

The currency name of the currency associated with this object.

Example

Euro

currency_codestring

The currency code of the currency associated with this object.

Example

EUR

currency_symbolstringread only

Example

currency_decimal_placesinteger<int32>read only

Example

primary_currency_idstringread only

The currency ID of the administration's primary currency.

Example

primary_currency_namestringread only

The currency name of the administration's primary currency.

Example

Euro

primary_currency_codestringread only

The currency code of the administration's primary currency.

Example

EUR

primary_currency_symbolstringread only

The currency symbol of the administration's primary currency.

Example

primary_currency_decimal_placesinteger<int32>read only

The currency decimal places of the administration's primary currency.

Example

auto_budget_amountstring<amount> | null

The amount for the auto-budget, if set.

Example

-1012.12

pc_auto_budget_amountstring<amount> | null

The amount for the auto-budget, if set in the primary currency of the administration.

Example

-1012.12

spentArray<ArrayEntryWithCurrencyAndSum>read only

Information on how much was spent in this budget. Is only filled in when the start and end date are submitted.

Show child attributes

currency_idstring

Example

currency_codestring

Example

USD

currency_symbolstring

Example

currency_decimal_placesinteger<int32>

Number of decimals supported by the currency

Example

sumstring<amount>

The amount earned, spent or transferred.

Example

123.45

pc_spentArray<ArrayEntryWithCurrencyAndSum>read only

Information on how much was spent in this budget. Is only filled in when the start and end date are submitted. It is converted to the primary currency of the administration.

Show child attributes

currency_idstring

Example

currency_codestring

Example

USD

currency_symbolstring

Example

currency_decimal_placesinteger<int32>

Number of decimals supported by the currency

Example

sumstring<amount>

The amount earned, spent or transferred.

Example

123.45

400Bad RequestBadRequestResponse

Bad request

Response fields application/json

messagestring

Example

Bad Request

exceptionstring

Example

BadRequestHttpException

401UnauthorizedUnauthenticatedResponse

Unauthenticated

Response fields application/json

messagestring

Example

Unauthenticated

exceptionstring

Example

AuthenticationException

404Not FoundNotFoundResponse

Page not found

Response fields application/json

messagestring

Example

Resource not found

exceptionstring

Example

NotFoundHttpException

422Unprocessable EntityValidationErrorResponse

Validation error. The body will have the exact details.

Response fields application/json

messagestring

Example

The given data was invalid.

errorsobject

Show child attributes

emailArray<string>

forceArray<string>

blockedArray<string>

fieldArray<string>

roleArray<string>

blocked_codeArray<string>

nameArray<string>

typeArray<string>

ibanArray<string>

startArray<string>

endArray<string>

dateArray<string>

500Internal Server ErrorInternalExceptionResponse

Internal exception

Response fields application/json

messagestring

Example

Internal Exception

exceptionstring

Example

InternalException

Authorization

firefly_iii_authoauth2

OAuth2 authorization code flow. Create a client on your installation's /profile page; it authorizes at /oauth/authorize and issues tokens at /oauth/token there. The URLs below are the demo site's. How to use the API walks through it.

local_bearer_authhttp (bearer)

A Personal Access Token, sent as a bearer token. Create one on your installation under Options > Profile > OAuth > Personal Access Tokens.