---
title: "Changes to Estimate Rates"
method: POST
path: "/v1/rates/estimate"
---

# Changes to Estimate Rates

`POST /v1/rates/estimate`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 8 of 70 revisions.

- **2026-07-13** `6af91511d87e`: 2 breaking
- **2026-03-10** `2c019e9a32d2`: 2 info
- **2025-10-24** `d9f4ce22cae1`: 1 breaking, 4 info
- **2025-10-11** `8fa3ed1d08e2`: 1 info
- **2024-10-08** `e4ae9b442f54`: 6 info
- **2024-09-13** `5a15ef11fd60`: 14 warning
- **2024-07-28** `99050ced80fa`: 5 breaking, 4 info
- **2024-03-21** `9c7925506c11`: 10 warning

## Changes

- **2026-07-13** `6af91511d87e`: 2 breaking
  - the response property `items/allOf[subschema #1: rate_estimate]/delivery_days` became nullable for the status `200`
  - the response property `items/allOf[subschema #1: rate_estimate]/estimated_delivery_date` became nullable for the status `200`
- **2026-03-10** `2c019e9a32d2`: 2 info
  - added the new `age_verification_16_plus` enum value to the request property `allOf[subschema #1: rate_estimate_options]/confirmation/allOf[subschema #1: delivery_confirmation]/`
  - added the new `delivery_code` enum value to the request property `allOf[subschema #1: rate_estimate_options]/confirmation/allOf[subschema #1: delivery_confirmation]/`
- **2025-10-24** `d9f4ce22cae1`: 1 breaking, 4 info
  - the `items/allOf[subschema #1: rate_estimate]/rate_attributes/items/` response's property type changed from `string` to no type for status `200`
  - added `#/components/schemas/rate_attributes` to the `items/allOf[subschema #1: rate_estimate]/rate_attributes/items/` response property `allOf` list for the response status `200`
  - removed the `best_value` enum value from the `items/allOf[subschema #1: rate_estimate]/rate_attributes/items/` response property for the response status `200`
  - removed the `cheapest` enum value from the `items/allOf[subschema #1: rate_estimate]/rate_attributes/items/` response property for the response status `200`
  - removed the `fastest` enum value from the `items/allOf[subschema #1: rate_estimate]/rate_attributes/items/` response property for the response status `200`
- **2025-10-11** `8fa3ed1d08e2`: 1 info
  - added the optional property `items/allOf[subschema #1: rate_estimate]/rate_attributes` to the response with the `200` status
- **2024-10-08** `e4ae9b442f54`: 6 info
  - added the optional property `errors/items/allOf[subschema #1: error]/carrier_code` to the response with the `400` status
  - added the optional property `errors/items/allOf[subschema #1: error]/carrier_code` to the response with the `500` status
  - added the optional property `errors/items/allOf[subschema #1: error]/carrier_id` to the response with the `400` status
  - added the optional property `errors/items/allOf[subschema #1: error]/carrier_id` to the response with the `500` status
  - added the optional property `errors/items/allOf[subschema #1: error]/field_name` to the response with the `400` status
  - added the optional property `errors/items/allOf[subschema #1: error]/field_name` to the response with the `500` status
- **2024-09-13** `5a15ef11fd60`: 14 warning
  - added the new `file_not_found` enum value to the `errors/items/allOf[subschema #1: error]/error_code/allOf[subschema #1: error_code]/` response property for the response status `400`
  - added the new `file_not_found` enum value to the `errors/items/allOf[subschema #1: error]/error_code/allOf[subschema #1: error_code]/` response property for the response status `500`
  - added the new `funding_source_error` enum value to the `errors/items/allOf[subschema #1: error]/error_code/allOf[subschema #1: error_code]/` response property for the response status `400`
  - added the new `funding_source_error` enum value to the `errors/items/allOf[subschema #1: error]/error_code/allOf[subschema #1: error_code]/` response property for the response status `500`
  - added the new `funding_source_missing_configuration` enum value to the `errors/items/allOf[subschema #1: error]/error_code/allOf[subschema #1: error_code]/` response property for the response status `400`
  - added the new `funding_source_missing_configuration` enum value to the `errors/items/allOf[subschema #1: error]/error_code/allOf[subschema #1: error_code]/` response property for the response status `500`
  - added the new `funding_source_registration_in_progress` enum value to the `errors/items/allOf[subschema #1: error]/error_code/allOf[subschema #1: error_code]/` response property for the response status `400`
  - added the new `funding_source_registration_in_progress` enum value to the `errors/items/allOf[subschema #1: error]/error_code/allOf[subschema #1: error_code]/` response property for the response status `500`
  - added the new `insurance_failure` enum value to the `errors/items/allOf[subschema #1: error]/error_code/allOf[subschema #1: error_code]/` response property for the response status `400`
  - added the new `insurance_failure` enum value to the `errors/items/allOf[subschema #1: error]/error_code/allOf[subschema #1: error_code]/` response property for the response status `500`
  - added the new `service_not_determined` enum value to the `errors/items/allOf[subschema #1: error]/error_code/allOf[subschema #1: error_code]/` response property for the response status `400`
  - added the new `service_not_determined` enum value to the `errors/items/allOf[subschema #1: error]/error_code/allOf[subschema #1: error_code]/` response property for the response status `500`
  - added the new `shipping_rule_not_found` enum value to the `errors/items/allOf[subschema #1: error]/error_code/allOf[subschema #1: error_code]/` response property for the response status `400`
  - added the new `shipping_rule_not_found` enum value to the `errors/items/allOf[subschema #1: error]/error_code/allOf[subschema #1: error_code]/` response property for the response status `500`
- **2024-07-28** `99050ced80fa`: 5 breaking, 4 info
  - the `items/allOf[subschema #1: rate_estimate]/confirmation_amount/allOf[subschema #1: monetary_value]/amount` response's property format changed from `double` to no format for status `200`
  - the `items/allOf[subschema #1: rate_estimate]/insurance_amount/allOf[subschema #1: monetary_value]/amount` response's property format changed from `double` to no format for status `200`
  - the `items/allOf[subschema #1: rate_estimate]/other_amount/allOf[subschema #1: monetary_value]/amount` response's property format changed from `double` to no format for status `200`
  - the `items/allOf[subschema #1: rate_estimate]/shipping_amount/allOf[subschema #1: monetary_value]/amount` response's property format changed from `double` to no format for status `200`
  - the `items/allOf[subschema #1: rate_estimate]/tax_amount/allOf[subschema #1: monetary_value]/amount` response's property format changed from `double` to no format for status `200`
  - the `allOf[subschema #1: rate_estimate_options]/dimensions/allOf[subschema #1: dimensions]/height` request property format was generalized from `double` to no format
  - the `allOf[subschema #1: rate_estimate_options]/dimensions/allOf[subschema #1: dimensions]/length` request property format was generalized from `double` to no format
  - the `allOf[subschema #1: rate_estimate_options]/dimensions/allOf[subschema #1: dimensions]/width` request property format was generalized from `double` to no format
  - the `allOf[subschema #1: rate_estimate_options]/weight/allOf[subschema #1: weight]/value` request property format was generalized from `double` to no format
- **2024-03-21** `9c7925506c11`: 10 warning
  - added the new `customs_items_required` enum value to the `errors/items/allOf[subschema #1: error]/error_code/allOf[subschema #1: error_code]/` response property for the response status `400`
  - added the new `customs_items_required` enum value to the `errors/items/allOf[subschema #1: error]/error_code/allOf[subschema #1: error_code]/` response property for the response status `500`
  - added the new `incompatible_paired_labels` enum value to the `errors/items/allOf[subschema #1: error]/error_code/allOf[subschema #1: error_code]/` response property for the response status `400`
  - added the new `incompatible_paired_labels` enum value to the `errors/items/allOf[subschema #1: error]/error_code/allOf[subschema #1: error_code]/` response property for the response status `500`
  - added the new `invalid_charge_event` enum value to the `errors/items/allOf[subschema #1: error]/error_code/allOf[subschema #1: error_code]/` response property for the response status `400`
  - added the new `invalid_charge_event` enum value to the `errors/items/allOf[subschema #1: error]/error_code/allOf[subschema #1: error_code]/` response property for the response status `500`
  - added the new `invalid_object` enum value to the `errors/items/allOf[subschema #1: error]/error_code/allOf[subschema #1: error_code]/` response property for the response status `400`
  - added the new `invalid_object` enum value to the `errors/items/allOf[subschema #1: error]/error_code/allOf[subschema #1: error_code]/` response property for the response status `500`
  - added the new `no_rates_returned` enum value to the `errors/items/allOf[subschema #1: error]/error_code/allOf[subschema #1: error_code]/` response property for the response status `400`
  - added the new `no_rates_returned` enum value to the `errors/items/allOf[subschema #1: error]/error_code/allOf[subschema #1: error_code]/` response property for the response status `500`

---

[Operation](https://skmtc.dev/shipengine/apis/shipengine-api/docs/v1/rates/estimate/post.md) - [API](https://skmtc.dev/shipengine/apis/shipengine-api.md) - [Page](https://skmtc.dev/shipengine/apis/shipengine-api/changes/v1/rates/estimate/post)