---
id: guide-0036
title: "When Do You Need a Co-Signer, and How Does It Work?"
category: guide
subtopic: cosigner
page_type: guide
source_url: "https://www.castlevwcars.com"
tags: ["financing", "co-signer", "credit", "guide"]
questions:
  - "What is a co-signer?"
  - "Do I need a co-signer?"
  - "How does co-signing work?"
  - "Will a co-signer help me get approved?"
related: [finance-basics, approval-process, first-time-buyer]
dealer: Castle Volkswagen of Schaumburg
---

A co-signer is someone who agrees to be legally responsible for your car loan if you can't pay. Lenders often ask for a co-signer when you have limited credit history, lower income, or a less-than-perfect credit score-adding a co-signer with strong credit can improve your odds of approval and sometimes lower your interest rate.

## How It Works
Your co-signer signs the loan contract alongside you. If you miss a payment, the lender can pursue the co-signer for the full amount. Co-signers don't own the car; they're purely a safety net for the lender. Both your credit and the co-signer's credit are affected by the loan's payment history.

## At Castle Volkswagen of Schaumburg
Our finance team works with shoppers in all credit situations and can discuss whether a co-signer makes sense for your specific situation. Call **(847) 593-4700** to talk about your financing options-no pressure, just honest guidance.