Refinancing your home loan with a co-signer is a smart strategy many Filipino homeowners use to qualify for better rates, increase their borrowing capacity, or strengthen a weak application. Whether your income falls short of a bank's requirements, your credit history needs a boost, or you simply want to access the best refinance rate available — a qualified co-signer can make the difference between approval and rejection. With Nook, the Philippines' first digital mortgage broker, the entire process is free and we match you with the right bank across over a dozen lenders.
This guide answers the most common questions about refinancing with a co-signer in the Philippines — from who qualifies, to how it affects both parties, to what documents you'll need. If your current home loan rate is above 7%, you could be overpaying by tens of thousands of pesos every year. Read on to find out how a co-signer could help you unlock rates as low as 5.99% p.a. and start saving immediately.
A co-signer — also called a co-borrower or guarantor depending on the bank — is a person who agrees to share legal responsibility for your home loan alongside you. When you refinance with a co-signer, their income, credit standing, and assets are included in the bank's assessment of your application. This means the bank sees a stronger combined profile when deciding whether to approve you and at what interest rate.
It's important to understand the difference between a co-signer and a co-borrower. A co-borrower typically has equal rights to the property and shares full loan liability. A co-signer or guarantor backs the loan and is liable if you default, but may not have ownership rights to the property. Philippine banks use these terms slightly differently, so Nook will clarify exactly what each lender requires during your application.
Yes, absolutely. All major Philippine banks — including BDO, BPI, Metrobank, Security Bank, RCBC, and Chinabank — accept co-borrowers or co-signers as part of a home loan refinance application. In fact, many banks encourage it, especially when the primary borrower's income alone doesn't meet the minimum debt-to-income ratio required for the loan amount being applied for.
This is a well-established practice in the Philippine banking system. Whether you're refinancing a standard bank home loan or considering a switch from a Pag-IBIG loan to a private bank for a lower rate, co-signers are generally welcome. The key is finding the right lender for your combined profile — which is exactly what Nook does for free.
Most Philippine banks accept the following people as co-signers or co-borrowers:
- Spouse — In many cases, if you are married, your spouse is automatically required to be a co-borrower regardless of whether they have income.
- Parents or in-laws — Accepted by most banks, particularly if they have verifiable income or substantial assets.
- Siblings — Accepted by many banks, especially if the sibling is employed or runs a business.
- Adult children — A common option when parents are the primary borrower but are approaching retirement age.
- Close relatives — Some banks will accept relatives up to the second degree of consanguinity.
Banks typically do not accept friends, non-related business partners, or acquaintances as co-signers for residential home loans. The co-signer must also be a Filipino citizen or an eligible foreigner under Philippine property laws. Age matters too — most banks require that the co-signer be no older than 65 to 70 years at loan maturity.
The co-signer will generally need to submit the same set of documents as the primary borrower. Here's what most Philippine banks will ask for:
- Valid government-issued IDs (passport, driver's license, SSS/GSIS ID, PRC ID, etc.)
- Proof of income:
- For employed co-signers: Certificate of Employment and Compensation (COEC), last 3 months' payslips, ITR for the past 2 years
- For self-employed co-signers: DTI or SEC registration, audited financial statements, ITR for the past 2-3 years, bank statements
- For OFW co-signers: Employment contract, proof of remittance, OWWA documentation
- Proof of billing (utility bill or bank statement showing current address)
- Marriage certificate (if co-signer is a spouse)
- Birth certificate or proof of relationship (if co-signer is a family member)
The co-signer typically does not need to submit property documents — those remain in the primary borrower's name. Nook will provide a complete customized checklist based on your specific co-signer's profile and the bank you're applying to.
A co-signer improves your application in two main ways: income pooling and risk reduction.
Income pooling is the most impactful benefit. Philippine banks typically require that your monthly mortgage payment does not exceed 30% to 40% of your gross monthly income. If your income alone falls short, adding a co-signer's income to the calculation can bridge the gap. For example, if you earn 50,000 per month and want to refinance a 5,000,000 loan, your income alone may be too low for the bank's threshold. If your co-signer earns an additional 40,000 per month, your combined 90,000 monthly income may comfortably qualify.
Risk reduction reassures the bank that even if the primary borrower faces a financial setback, there is another responsible party committed to repayment. This can translate into better loan terms and a smoother approval process. If you've had past credit issues, you may also want to read our guide on how to refinance with bad credit in the Philippines for additional strategies.
Not necessarily — and this is one of the most important distinctions to understand before proceeding. Whether a co-signer has ownership rights to the property depends on how they are structured in the loan and the title.
If the co-signer is classified as a co-borrower and their name is added to the Transfer Certificate of Title (TCT), they become a co-owner with equal property rights. This is common when a spouse is added as co-borrower, since the Family Code of the Philippines treats conjugal property accordingly.
If the co-signer is structured as a guarantor, they are financially liable for the loan but do not appear on the title and have no ownership claim on the property. Not all banks offer pure guarantor arrangements for refinancing — some insist on co-borrower status. Nook will help you identify which banks can structure the deal in the way that best protects both you and your co-signer.
Being a co-signer is a significant financial commitment, and your co-signer should fully understand the risks before agreeing:
- Full loan liability: If you miss payments or default, the bank can pursue the co-signer for the full outstanding loan balance. This can include legal action, asset seizure, or damage to the co-signer's credit record.
- Impact on borrowing capacity: The loan may appear on the co-signer's credit profile, potentially reducing their ability to take out their own loans (e.g., a car loan or personal loan) in the future.
- Long-term commitment: If the loan term is 20 years, the co-signer is bound for that entire period unless formally removed.
To protect your co-signer, consider taking out a mortgage redemption insurance (MRI) or life insurance policy that covers the loan balance. Many banks require MRI as part of the refinance package, which provides some protection. Having a clear, written private agreement between you and your co-signer about repayment responsibilities is also advisable, though it does not replace the bank's legal claim.
Yes, it is possible to remove a co-signer from your home loan in the Philippines, but it is not a simple process. Banks will typically only release a co-signer if the primary borrower can demonstrate they can independently qualify for and service the loan. The most common ways to remove a co-signer include:
- Refinancing again — You can refinance once more as a sole borrower once your income, credit, or financial situation has improved sufficiently to qualify on your own. This essentially pays off the co-signed loan and replaces it with a new one in your name only.
- Formal loan novation — Some banks allow a formal modification of the loan agreement to remove the co-signer, subject to re-qualification and bank approval. This is less common and varies by lender.
- Full loan repayment — Once the loan is fully paid off, the co-signer's obligation automatically ends.
Most banks will not simply strike a co-signer's name from an existing loan without some form of re-assessment. If removing a co-signer is a future goal, inform your Nook advisor early so they can recommend banks with flexible co-borrower release policies.
The savings from refinancing depend on the gap between your current rate and the new rate you can access. Through Nook, the best available refinance rate is currently 5.99% p.a. If your current loan rate is 8% or higher — which is common for loans that are 3 or more years old — the savings can be substantial.
Here's a concrete example. Suppose you have an outstanding loan balance of 4,000,000 with a remaining term of 20 years, currently at 8.5% p.a.:
- Current monthly payment at 8.5%: approximately 34,710
- New monthly payment at 5.99%: approximately 28,640
- Monthly savings: approximately 6,070
- Annual savings: approximately 72,840
- Total savings over the loan term: over 1,450,000
If a co-signer is what's standing between you and this level of saving — because your income alone didn't qualify — then adding one is clearly worth considering. Nook's service to borrowers is 100% free, so there's no cost to finding out exactly what rate you qualify for with a co-signer.
Applying through Nook is straightforward. Here's how the process works:
- Submit your details online — Fill out Nook's free online application at nook.com.ph. Include both your details and your co-signer's basic information (income, employment type, relationship to you).
- Get matched with lenders — Nook's team reviews your combined profile and identifies which banks are most likely to approve your application at the best available rate. We work with BDO, BPI, Metrobank, Security Bank, RCBC, Chinabank, PSBank, EastWest Bank, UnionBank, Robinsons Bank, and more.
- Receive your rate comparison — You'll see a clear comparison of offers from multiple banks, so you can make an informed decision. No obligation to proceed.
- Submit your documents — Once you choose a bank, Nook guides both you and your co-signer through the exact documents needed and handles the submission on your behalf.
- Get approved and start saving — After approval, the new bank pays out your old loan and your new, lower-rate loan begins. The process typically takes 4 to 8 weeks.
Nook's service is completely free for borrowers — banks pay us a referral fee, so you pay nothing extra. Your co-signer also incurs no fees through Nook. Start your application today and find out how much you could save.