How to Refinance Home Loan with Co-Borrower Philippines - Joint Applications

A co-borrower — sometimes called a joint borrower — is a person who applies for a home loan refinance together with the primary borrower. Both parties are equally responsible for repaying the loan, and both of their incomes, assets, and credit histories are evaluated by the lender during the approval process.

This is different from a co-maker or guarantor, who only steps in if the primary borrower defaults. A co-borrower is a full participant in the loan from day one. Their name typically appears on the loan documents, and the bank counts their income alongside yours when computing how large a loan you qualify for and at what interest rate.

In the Philippine context, co-borrowers are extremely common in home loan applications — both new purchases and refinances — because they allow couples or family members to pool their financial resources and qualify for better terms than either person could achieve alone.

Philippine banks generally allow the following individuals to serve as co-borrowers on a refinanced home loan:

• Spouse: The most common co-borrower. Married couples are often required by banks to include each other as co-borrowers by default.
• Parents or parents-in-law: Accepted by most banks, though age limits apply — the co-borrower typically cannot be older than 65 to 70 years of age at the end of the loan term.
• Siblings: Accepted at many banks, particularly if they are dependents or live in the same household.
• Children: Adult children (18 and above) who are employed or have verifiable income can be added as co-borrowers.

Specific eligibility rules vary by lender. Banks like BDO, BPI, Security Bank, and Metrobank each have their own guidelines on co-borrower relationships and age requirements. Nook works with multiple lenders and can help you identify which bank's rules work best for your specific family situation — at no cost to you.

Adding a co-borrower to your refinance application can unlock several significant advantages:

• Higher loanable amount: Banks compute how much you can borrow based on combined monthly income. If you earn 80,000 pesos a month and your spouse earns 60,000, the bank evaluates you as a household earning 140,000 — dramatically increasing your borrowing power.
• Better interest rates: A stronger combined financial profile reduces perceived risk for the lender, which can translate into access to lower rates. Through Nook, the best available rate today is 5.99% p.a.
• Easier qualification: If your individual debt-to-income ratio is too high, a co-borrower's income helps bring it within acceptable limits set by Philippine banks (typically 30–40% of gross monthly income).
• Shared financial responsibility: Monthly amortisation obligations are distributed across two income sources, making the loan more manageable in the long run.
• Stronger application overall: Even if both borrowers have moderate credit profiles individually, a joint application often presents a more complete and compelling picture to lenders.

The savings can be substantial. Consider this example: a couple with an outstanding home loan balance of 4,000,000 pesos currently paying 8.5% per annum on a remaining 20-year term. Their current monthly amortisation is approximately 34,656 pesos.

If they refinance jointly and qualify for a rate of 5.99% p.a. on the same remaining term, their new monthly payment would be approximately 28,632 pesos. That's a monthly saving of around 6,024 pesos — or roughly 72,288 pesos per year. Over the full remaining 20-year term, total interest savings would be approximately 1,445,760 pesos.

Now imagine that the primary borrower could only qualify individually at, say, 7.25% p.a. due to income constraints, while the joint application unlocks 5.99% p.a. The difference between those two scenarios adds up to hundreds of thousands of pesos in savings attributable purely to the co-borrower's contribution to the application.

Use Nook's free calculator to run your own numbers based on your actual loan balance and current rate.

Co-borrowers are typically required to submit a similar set of documents as the primary borrower. Here is a general checklist for most Philippine banks:

• Valid government-issued ID (passport, driver's licence, SSS/GSIS ID, etc.)
• Proof of relationship to the primary borrower (e.g., PSA marriage certificate for spouses, birth certificate for parents or siblings)
• Proof of income:
  • Employed: Latest 3 months' payslips, Certificate of Employment with compensation, and ITR (BIR Form 2316 or 1700)
  • Self-employed: Latest 2 years' ITR with audited financial statements and DTI/SEC registration
  • OFW: Employment contract, POEA certification, latest remittance records
• Bank statements for the past 3 to 6 months
• Taxpayer Identification Number (TIN)

The primary borrower will additionally need to provide all property-related documents — the Transfer Certificate of Title (TCT), tax declaration, and existing loan documents. Nook's team will guide both you and your co-borrower through the full document checklist once you start your application.

Not necessarily — but it depends on the bank and the nature of the relationship. Here is a general breakdown:

Spouses: Under the Family Code of the Philippines, property acquired during marriage is generally considered conjugal property. Most banks require the spouse to be a co-borrower (and often co-owner on the title) as a matter of policy, regardless of whether their income is being used in the computation.

Non-spouse co-borrowers (parents, siblings, children): Many banks allow non-spouse co-borrowers without requiring their name to appear on the TCT. Their role is purely financial — to strengthen the income computation. However, some lenders may require a co-ownership arrangement, especially if the co-borrower is contributing a significant portion of the qualifying income.

It's worth noting that adding a co-borrower to the title has legal and estate implications. If ownership arrangements need to change as part of the refinance, you may need to coordinate with a notary public or real estate lawyer. Nook can refer you to trusted professionals if needed.

This is a critical point that many applicants overlook: a co-borrower's credit history works both ways. While a strong co-borrower strengthens your application, a co-borrower with a poor credit score or a history of loan defaults can actually hurt your chances of approval — or result in a higher interest rate being offered.

Philippine banks check the Credit Information Corporation (CIC) records and their own internal databases for all borrowers on a joint application. If your co-borrower has unpaid credit card debt, a history of late payments, or an existing default on record, this will be factored into the lender's risk assessment.

If you're concerned about your co-borrower's credit standing, you should: (1) request a credit report from CIC to understand the current situation, (2) settle any outstanding dues before applying, and (3) allow time for the credit record to reflect the improvements.

You may also want to read our guide on how to refinance with bad credit in the Philippines for a deeper look at strategies that apply to both primary borrowers and co-borrowers with credit challenges. Nook will assess your situation honestly before you submit to any bank, so you don't waste time on applications unlikely to succeed.

Yes, and this is actually one of the most common joint refinance scenarios in the Philippines. Many Filipino households have one spouse working abroad while the other manages the home and existing mortgage. OFW spouses can be included as co-borrowers, and their foreign-sourced income can be used to strengthen the application.

For OFW co-borrowers, banks typically require:

• Valid employment contract with the foreign employer
• POEA (Philippine Overseas Employment Administration) documentation or OWWA membership records
• Proof of remittances (bank statements showing regular inward remittances for the past 3–6 months)
• A valid Philippine passport and any relevant overseas work permits

Income from OFW co-borrowers is usually computed at a haircut (i.e., the bank applies a conservative multiplier to account for employment continuity risk), but it still significantly boosts the application. Some banks are more OFW-friendly than others — Nook can help you match with the lender whose policies best suit your household's setup.

Yes, it is possible to remove a co-borrower from a home loan, but it is not a simple administrative process — it typically requires a new loan application or a formal loan restructuring with your lender. This process is sometimes called a "co-borrower release" or "assumption of mortgage."

Common situations where this comes up include divorce or legal separation, the death of a co-borrower, or a change in financial circumstances where one party wants to assume full responsibility for the loan.

To remove a co-borrower, you generally need to demonstrate to the bank that the remaining borrower can qualify for the loan on their own — meaning their individual income must meet the bank's minimum debt-to-income requirements for the remaining loan balance. If you can't qualify individually, the bank is unlikely to release the co-borrower from liability.

If removing a co-borrower is part of your long-term plan, it's worth discussing this upfront with Nook when structuring your refinance — so you choose a lender and loan structure that gives you the most flexibility going forward.

Getting started with a joint refinance through Nook is straightforward and completely free. Here's what the process looks like:

1. Submit your details online: Fill in basic information about your existing loan — current balance, interest rate, monthly payment, and property type. You'll also indicate that you're applying with a co-borrower.
2. Speak with a Nook mortgage specialist: A dedicated advisor will contact you to discuss your household's financial profile, understand your goals, and explain the options available across Nook's partner banks.
3. Compare offers: Nook submits your application to multiple lenders simultaneously and presents you with real, comparable offers — so you can see side by side which bank gives you the best rate and terms for a joint application.
4. Submit documents: Nook guides both you and your co-borrower through the documentation process, helping ensure nothing is missing that could delay approval.
5. Receive approval and proceed to closing: Once a bank approves your joint application, Nook coordinates the signing and release process, keeping you updated at every step.

Whether you're refinancing a house and lot, a condominium, or a property originally financed through Pag-IBIG — as covered in our guide on Pag-IBIG home loan refinancing to private banks — Nook can help you find the best joint refinance deal at no cost to you. Start your application today and see how much your household could save.