What Is a Co-Signer, and When Might I Need One
- By Jim Blackburn
- on
- 100 first time home buyer FAQs

1. A Co-Signer Is Someone Who Agrees to Take Responsibility for Your Loan
A co-signer is someone who signs the loan agreement along with you and agrees to take responsibility for the mortgage if you’re unable to make the payments. Most often, a co-signer is a family member or close friend
The co-signer’s credit score and income are considered by the lender in addition to yours
If you miss a payment or default, the co-signer is legally responsible for the debt
While it’s a helpful solution, it’s a serious commitment for your co-signer. Make sure they understand the potential consequences.
2. You Might Need a Co-Signer If Your Credit or Income Isn’t Strong Enough
If your credit score or income is too low to qualify for a mortgage, a co-signer can help you: Secure a lower interest rate
Get approved for a higher loan amount
Increase your chances of getting approved in a competitive marketA co-signer essentially adds their financial strength to your application, giving the lender more confidence.
3. Co-Signing Is a Big Responsibility—Understand the Risks
Before asking someone to co-sign for you, it’s important to: Discuss the risks and potential impacts on both parties’ credit scores
Set clear expectations for communication and payments to avoid misunderstandings
Ensure that everyone involved understands the long-term commitment of co-signingRemember, co-signing is more than just a formality—it’s a shared responsibility. Both you and your co-signer’s credit are on the line.
Considering a Co-Signer for Your Loan? Let’s Make Sure You’re Ready
Download our free “Co-Signer Agreement Guide” — includes questions to ask and things to discuss before moving forward
Chat live now if you have concerns about co-signing or want to learn about other financing options
Schedule a call with a Stairway Mortgage advisor to explore loan options that work for you and your co-signer
At Stairway Mortgage, we guide you through the tough decisions—
so you and your co-signer can move forward with confidence.
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Schedule a Call1. A Co-Signer Is Someone Who Agrees to Take Responsibility for Your Loan
A co-signer is someone who signs the loan agreement along with you and agrees to take responsibility for the mortgage if you’re unable to make the payments.
👨👩👧👦 Most often, a co-signer is a family member or close friend
💳 The co-signer’s credit score and income are considered by the lender in addition to yours
⚖️ If you miss a payment or default, the co-signer is legally responsible for the debt
While it’s a helpful solution, it’s a serious commitment for your co-signer. Make sure they understand the potential consequences.
2. You Might Need a Co-Signer If Your Credit or Income Isn’t Strong Enough
If your credit score or income is too low to qualify for a mortgage, a co-signer can help you:
📉 Secure a lower interest rate
📝 Get approved for a higher loan amount
💵 Increase your chances of getting approved in a competitive marketA co-signer essentially adds their financial strength to your application, giving the lender more confidence.
3. Co-Signing Is a Big Responsibility—Understand the Risks
Before asking someone to co-sign for you, it’s important to:
⚖️ Discuss the risks and potential impacts on both parties’ credit scores
💬 Set clear expectations for communication and payments to avoid misunderstandings
📝 Ensure that everyone involved understands the long-term commitment of co-signingRemember, co-signing is more than just a formality—it’s a shared responsibility. Both you and your co-signer’s credit are on the line.
Considering a Co-Signer for Your Loan? Let’s Make Sure You’re Ready
📘 Download our free “Co-Signer Agreement Guide” — includes questions to ask and things to discuss before moving forward
💬 Chat live now if you have concerns about co-signing or want to learn about other financing options
📞 Schedule a call with a Stairway Mortgage advisor to explore loan options that work for you and your co-signer
At Stairway Mortgage, we guide you through the tough decisions—
so you and your co-signer can move forward with confidence.