---
title: "Get Series Fee Changes"
method: GET
path: "/series/fee_changes"
tags: ["exchange"]
---

# Get Series Fee Changes

`GET /series/fee_changes`

## Query parameters

- `series_ticker` string
- `show_historical` boolean

## Response `200`

Series fee changes retrieved successfully

- GetSeriesFeeChangesResponse
  - `series_fee_change_arr` SeriesFeeChange[], required
    - `id` string, required — Unique identifier for this fee change
    - `series_ticker` string, required — Series ticker this fee change applies to
    - `fee_type` 'quadratic' | 'quadratic_with_maker_fees' | 'flat', required — Fee type for a series or scheduled fee override.
    - `fee_multiplier` number, double, required — New fee multiplier for the series
    - `scheduled_ts` string, date-time, required — Timestamp when this fee change is scheduled to take effect

## Other responses

- `400` — Bad request - invalid input
- `500` — Internal server error

---

[API](https://skmtc.net/kalshi/apis/kalshi-trade-api-manual-endpoints.md) · [All operations](https://skmtc.net/kalshi/apis/kalshi-trade-api-manual-endpoints/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/kalshi/kalshi-trade-api-manual-endpoints/versions/6e6402bf667d/schema)