# Fees

A `Fee` is a charge levied against a `Merchant`. It represents how a platform charges its sellers for all various types of Fees.


## List Fees

 - [GET /fees](https://docs.finix.com/api/fees/listfees.md): Retrieve a list of Fee resources.

Filter fees by linked entity: You can filter fees by the entity that generated them using the linked_to query parameter:

- Transfer fees: ?linked_to=TRnErBfrHLgdAi3BqAkWLN27
- Authorization fees: ?linked_to=AUg8unYpnWBEY1AdVUDkdQYJ
- Split transfer fees: ?linked_to=split_transfer_split_transfer_97gaitUpcmzqjYYpQbei9j
- Compliance Form fees: ?linked_to=cf_uwErNm23TKYNEiqrEdJK59
- Payment Instrument fees: ?linked_to=PInVUXZLswZi6pdcK1T41MuE
- Merchant-specific fees: ?linked_to=MUwfZPNW3r4EqLMzwgr6txw4

{% admonition type="info" %}
Merchant-specific fees include monthly dues and assessments and any custom fees.
{% /admonition %}

To show fees charged to a specific entity during a period, pass the created_at.gte and created_at.lte query parameters.
- Example: ?merchant_id=MUeDVrf2ahuKc9Eg5TeZugvs&created_at.lte=2025-01-01&created_at.gte=2025-02-01

## Create a Custom Fee

 - [POST /fees](https://docs.finix.com/api/fees/createfee.md): Create a custom (i.e. one-time) Fee.

## Fetch a Fee

 - [GET /fees/{fee_id}](https://docs.finix.com/api/fees/getfee.md): Retrieve the details of an existing Fee.

## Update Fee

 - [PUT /fees/{fee_id}](https://docs.finix.com/api/fees/updatefee.md): Update the details of a Fee.

## List Fees

 - [GET /fees](https://docs.finix.com/api/split-transfers/listfees.md): Retrieve a list of Fee resources.

Filter fees by linked entity: You can filter fees by the entity that generated them using the linked_to query parameter:

- Transfer fees: ?linked_to=TRnErBfrHLgdAi3BqAkWLN27
- Authorization fees: ?linked_to=AUg8unYpnWBEY1AdVUDkdQYJ
- Split transfer fees: ?linked_to=split_transfer_split_transfer_97gaitUpcmzqjYYpQbei9j
- Compliance Form fees: ?linked_to=cf_uwErNm23TKYNEiqrEdJK59
- Payment Instrument fees: ?linked_to=PInVUXZLswZi6pdcK1T41MuE
- Merchant-specific fees: ?linked_to=MUwfZPNW3r4EqLMzwgr6txw4

{% admonition type="info" %}
Merchant-specific fees include monthly dues and assessments and any custom fees.
{% /admonition %}

To show fees charged to a specific entity during a period, pass the created_at.gte and created_at.lte query parameters.
- Example: ?merchant_id=MUeDVrf2ahuKc9Eg5TeZugvs&created_at.lte=2025-01-01&created_at.gte=2025-02-01