---
title: "Rate data model"
url: "https://docs.unified.to/shipping/rate/model"
description: "API reference for Rate data model. Launch multiple pre-built Rate integrations today with zero maintenance — all through a single API."
generated_at: "2026-05-29T17:54:09.183Z"
---
# Rate data model

 View field support, webhooks, and list parameters for each integration on the [Supported Integrations](/shipping/integrations) page. 

### 

* Data Model
* Typescript Type
* Zod Shape
* Python Class

Data Model

**shipment\_id**string 

Reference to the shipping object (if rate is for existing shipment)

**currency**string 

**from\_address**object 

Origin address

**to\_address**object 

Destination address

**packages** array 

Multiple packages (alternative to package)

**ship\_by\_at**date 

Latest date to ship (from order) (ISO-8601 / YYYY-MM-DDTHH:MM:SSZ format)

**carrier\_id**string 

Reference to the carrier

**id**string 

Unique identifier for this rate object

**rates** array 

**raw**any