---
title: Understanding Co-Buyers in TDC
description: Everything you need to know about handling co-buyers in the system
---

[Skip to content](https://knowledgebase.thedealersconcierge.com/knowledge/how-to-add-a-co-buyer#main-content)

English

Show submenu for translations

![Logo (4).png\]](https://knowledgebase.thedealersconcierge.com/hs-fs/hubfs/Logo%20(4).png?height=40&name=Logo%20(4).png)

Open main navigation

Close main navigation

- English
  
  Show submenu for translations

 Your TDC Knowledge Navigator

- There are no suggestions because the search field is empty.

1. [Knowledge Base](https://knowledgebase.thedealersconcierge.com/knowledge?hsLang=en)
2. [Buyer Portal](https://knowledgebase.thedealersconcierge.com/knowledge/buyer-portal?hsLang=en)
3. [Co-Buyer](https://knowledgebase.thedealersconcierge.com/knowledge/buyer-portal?hsLang=en#co-buyer)

# Understanding Co-Buyers in TDC

## Everything you need to know about handling co-buyers in the system

In many deals, a **co-buyer** is added alongside the primary buyer. TDC provides a secure and seamless way to include co-buyers in the process while keeping their information organized and compliant.

---

### Adding Co-Buyers

- A co-buyer must always be added to an **existing TDC transaction**.
- This can be done:
  
    - Through the **Dealership Dashboard**, or
    - Through the **Buyer Portal**.
- ⚠️ Important: The TDC system **cannot merge data from two independent transactions**. Always add the co-buyer to the original transaction.

![Horizontal Images HubSpot (7)](https://knowledgebase.thedealersconcierge.com/hs-fs/hubfs/Horizontal%20Images%20HubSpot%20(7).png?width=619&height=348&name=Horizontal%20Images%20HubSpot%20(7).png)

---

### Co-Buyer Portals

- Each co-buyer receives their **own portal**, independent from the primary buyer.
- They log in with their **own email address** and a **one-time password (OTP)** sent to their phone.
- Co-buyers have access only to their own flow, documents, and forms.

---

### Deal Scenarios

- Co-buyers can be **removed** from transactions if needed.
- The roles of **primary buyer and co-buyer can be switched** at any time

---

### Forms for Co-Buyers

- Co-buyers have their **own set of Pre- and Post-Purchase forms** to review and sign.
- These documents are delivered securely into their **Digital Glove Box** once executed.

---

### Logging In and Completing the Flow

- Once added to the transaction, the co-buyer must log into their portal and go through the required flow.
- If they are **at the dealership**: they can complete the flow using a **second kiosk**.
- If they are **remote**: they log in from home through their Buyer Portal. (they can locate it via the welcome email sent to the upon adding them to the transaction)

---

With co-buyer support in TDC, dealerships can handle multiple buyers securely and efficiently while keeping all documents, forms, and consents fully compliant.

- [Getting Started](https://knowledgebase.thedealersconcierge.com/knowledge/getting-started?hsLang=en)
- [Buyer Portal](https://knowledgebase.thedealersconcierge.com/knowledge/buyer-portal?hsLang=en#main-content)

    - [Co-Buyer](https://knowledgebase.thedealersconcierge.com/knowledge/buyer-portal?hsLang=en#co-buyer)
- [Co-Buyer](https://knowledgebase.thedealersconcierge.com/knowledge/co-buyer?hsLang=en)
- [Dealer Dashboard](https://knowledgebase.thedealersconcierge.com/knowledge/dealer-dashboard?hsLang=en#main-content)

    - [Deal Jacket](https://knowledgebase.thedealersconcierge.com/knowledge/dealer-dashboard?hsLang=en#deal-jacket)
    - [User Management](https://knowledgebase.thedealersconcierge.com/knowledge/dealer-dashboard?hsLang=en#user-management)
    - [Compliance Forms](https://knowledgebase.thedealersconcierge.com/knowledge/dealer-dashboard?hsLang=en#compliance-forms)
- [Pre- and Post- Purchase Forms](https://knowledgebase.thedealersconcierge.com/knowledge/pre-and-post-purchase-forms?hsLang=en)
- [Remote Transactions](https://knowledgebase.thedealersconcierge.com/knowledge/remote-transactions?hsLang=en)
- [Ongoing Feature Releases](https://knowledgebase.thedealersconcierge.com/knowledge/ongoing-feature-releases?hsLang=en)
- [Tips & Tricks](https://knowledgebase.thedealersconcierge.com/knowledge/tips-tricks?hsLang=en)

[![Chill listening crop-3](https://knowledgebase.thedealersconcierge.com/hs-fs/hubfs/TDC%20cropped.png?width=44&height=24&name=TDC%20cropped.png "Chill listening crop-3")](https://thedealersconcierge.com?hsLang=en)

thedealersconcierge.com Help Center

Copyright © 2026, The Dealer\`s Concierge