Do I Need a Co-borrower to Refinance My Home Loan? Philippines Guide

A co-borrower is a person who jointly applies for a home loan with you and shares equal legal responsibility for repaying the debt. Unlike a guarantor or co-maker, a co-borrower's income is fully counted alongside yours when the bank assesses your loan application. This means their salary, assets, and credit history are all factored into the bank's decision — which can work in your favour if their financial profile is strong.

In the context of refinancing, a co-borrower helps the new lender feel confident that the loan will be repaid. They appear on the loan documents and, in most cases, on the property title as well. Common co-borrowers in the Philippines include spouses, adult children, siblings, and parents. Some banks also allow close relatives such as in-laws or first cousins, though this varies by lender.

Not necessarily. Whether you need a co-borrower depends primarily on three things: your individual income, your debt-to-income ratio, and the bank's specific policy. Many Filipino homeowners refinance successfully as solo applicants every year — particularly those with stable employment, a good credit history, and a loan amount that their income can comfortably support.

As a general rule of thumb, banks in the Philippines expect your total monthly loan obligations (including the new refinanced payment) to not exceed 35% to 40% of your gross monthly income. If your income alone clears this threshold comfortably, most lenders will not require a co-borrower. However, if your income is borderline, your employment type is considered higher risk (e.g., self-employed or freelance), or you are applying for a larger loan amount, a co-borrower may be required — or at least strongly recommended by the bank.

Philippine banks generally require co-borrowers to meet the following criteria:

• Relationship: Must be a close relative — spouse, parent, sibling, or child. Some banks extend this to in-laws or first cousins.
• Age: Typically between 21 and 65 years old at the time of application, and must not exceed the bank's maximum age (usually 70) by the end of the loan term.
• Income: Must have verifiable, stable income — either through employment (with at least 1-2 years of tenure) or a well-documented business.
• Residency: Most banks accept both Philippine residents and OFWs as co-borrowers, though OFW co-borrowers may need additional documentation.

If you are married, note that many banks will automatically require your spouse to be listed as a co-borrower — even if they have no income — simply because conjugal property laws in the Philippines mean your spouse has a legal stake in the property.

Adding a co-borrower with a strong financial profile can provide several significant advantages:

• Higher loan amount: Combined income allows you to qualify for a larger loan, which matters if your current outstanding balance is substantial.
• Easier approval: If your own income is irregular or you are self-employed, a salaried co-borrower can provide the stability banks want to see.
• Potentially better terms: While the interest rate itself is rarely changed based solely on having a co-borrower, a stronger overall application can help you negotiate from a position of strength — particularly when comparing offers across multiple lenders.
• Longer loan tenure: Some banks base the maximum loan term on the age of the primary borrower. If your co-borrower is younger, you may qualify for a longer repayment period, reducing your monthly amortisation.

With Nook's best available refinance rate currently at 5.99% p.a., even small improvements in your application strength can make a meaningful difference to your total interest savings over the life of the loan.

Yes — and many Nook clients do exactly this. If your gross monthly income comfortably covers the new monthly amortisation while staying within the bank's debt-to-income limits, most major Philippine banks (BDO, BPI, Metrobank, Security Bank, and others) will process your application as a sole borrower.

To give you a concrete example: if you are refinancing a loan with an outstanding balance of 3,000,000 pesos over 20 years at 5.99% p.a., your estimated monthly amortisation would be around 21,500 pesos. To qualify solo, a lender using a 35% debt-to-income ratio would want to see a gross monthly income of at least around 61,500 pesos — though this also accounts for any other existing monthly obligations you carry.

If you are currently on a Pag-IBIG loan and considering moving to a private bank, solo applications are very common. You can learn more about refinancing from Pag-IBIG to a private bank and what lenders typically look for in those cases.

In the Philippines, home loan interest rates from most banks are primarily determined by the loan amount, the fixed-rate period you choose, and the bank's current pricing — not directly by whether you have a co-borrower or not. So adding a co-borrower will not automatically trigger a lower rate in the way it might in some other countries.

That said, there is an indirect effect. A co-borrower with strong income and a clean credit record helps your overall application look more creditworthy. This can make it easier to negotiate with the bank, to qualify for promotional rates, or to be approved at all — opening up lenders whose rates might otherwise be out of reach for a borderline solo application.

The most reliable way to get the best available rate is to compare offers across multiple lenders simultaneously, which is exactly what Nook does on your behalf — at no cost to you.

This is a common question, particularly in cases of separation, divorce, or when a co-borrower (often a parent) has passed away. The general answer is: yes, but it requires a formal process and is subject to bank approval.

Removing a co-borrower typically involves demonstrating to the bank that you — as the sole remaining borrower — can independently service the loan based on your current income. The bank will re-assess your financials as if you were applying fresh. If you qualify solo, they may allow the removal via a loan amendment or novation agreement. In some cases, this effectively functions as a new refinance in itself.

If you anticipate needing to remove a co-borrower down the line, it's worth discussing this scenario with your lender or mortgage advisor upfront, so you can structure the loan accordingly from the beginning.

These two terms are often used interchangeably, but they have important legal distinctions:

• Co-borrower: Jointly applies for the loan. Their income is included in the bank's assessment. They are equally liable for the debt from day one, and their name typically appears on both the loan documents and the property title.
• Co-maker (or guarantor): Acts as a secondary guarantor. The bank will pursue a co-maker for repayment only if the primary borrower defaults. Their income may or may not be counted in the loan assessment depending on the lender, and they are typically not on the title.

For refinancing purposes, most Philippine banks that require additional support on an application will ask for a co-borrower rather than a co-maker, since the co-borrower's income directly strengthens the loan qualification. A co-maker is more common in personal loans and smaller credit facilities.

A co-borrower with poor credit or a problematic financial history can actually hurt your refinance application rather than help it. Banks will review the credit records of all borrowers listed on the application — so if your co-borrower has unpaid loans, defaults, or a low credit score, this can raise red flags and potentially lead to a rejection or a less favourable offer.

Similarly, a co-borrower with very low declared income adds little practical benefit to your application, since the income contribution won't meaningfully move the debt-to-income calculation.

If your co-borrower has credit issues, you may actually be better off applying solo — provided your own income supports the loan amount. If you yourself have credit challenges, there are still refinancing options available. Nook has helped clients navigate refinancing with bad credit in the Philippines, and our specialists can advise on which lenders are more flexible in these situations.

Nook is the Philippines' first digital mortgage broker, and one of the most common things our specialists help clients work through is exactly this question. When you reach out to us, we'll review your income, current loan details, and financial profile to give you a clear picture of whether you need a co-borrower, who would be most beneficial in that role, or whether you're in a strong enough position to refinance on your own.

We then compare offers from multiple Philippine banks simultaneously — including BDO, BPI, Metrobank, Security Bank, RCBC, UnionBank, and others — to find the most competitive rate and terms for your specific situation. Our best available refinance rate right now is 5.99% p.a. If you're currently paying 7%, 8%, or more, the savings can be substantial. And because Nook's service is completely free to the borrower, there's no downside to getting a professional second opinion on your options.