What Is Debt-to-Income Ratio and How Does It Affect Your Home Loan Approval?

Your debt-to-income ratio (DTI) is the percentage of your gross monthly income that goes toward paying all your existing debts. It is one of the most important metrics Philippine banks use to assess whether you can comfortably afford the monthly repayments on a new home loan.

The formula is simple:

DTI = (Total Monthly Debt Payments ÷ Gross Monthly Income) × 100

For example, if you earn 80,000 a month (gross) and your combined monthly debt payments — including a car loan, credit card minimums, and a proposed mortgage — total 32,000, your DTI is 40%.

Banks use DTI because income alone doesn't tell the full story. A borrower earning 150,000 a month but already servicing 120,000 in monthly obligations is actually in a riskier position than someone earning 60,000 with only 15,000 in existing debts. DTI captures that reality in a single, comparable number.

Philippine banks typically calculate DTI in two steps. First, they add up all your verified monthly debt obligations. Second, they divide that total by your gross monthly income (before tax and deductions) as evidenced by your payslips, ITR (Income Tax Return), or audited financial statements if you're self-employed.

Crucially, the monthly repayment on the home loan you are applying for is included in the debt total — not excluded. Banks want to know whether you can afford the new loan on top of everything you already owe. This is why it is important to calculate your projected mortgage payment before applying, so you can anticipate how your DTI will look from the bank's perspective.

Most banks in the Philippines use your gross income rather than net income as the denominator, which is standard practice. However, some lenders — particularly for self-employed borrowers — may apply a conservative haircut to declared income if it cannot be fully substantiated through documentation.

Most major Philippine banks — including BDO, BPI, Metrobank, Security Bank, and RCBC — use a maximum DTI threshold of 30% to 40% for home loan approvals. The specific limit varies by lender and by loan program:

• Conservative lenders: Maximum DTI of 30–35%, particularly for larger loan amounts or longer terms.
• Standard commercial banks: Maximum DTI of 35–40%, which is the most common range across BDO, BPI, Metrobank, and similar institutions.
• Pag-IBIG (HDMF): Generally allows a slightly higher DTI of up to 40–45% for its housing loan program, making it more accessible for borrowers with moderate income.

It's worth noting that these thresholds are guidelines, not hard rules. A bank may approve a borrower at 42% DTI if other factors — such as a large down payment, strong savings history, or blue-chip employer — significantly reduce perceived risk. Conversely, a borderline DTI combined with other risk factors can still result in a decline.

The safest target before applying is to keep your DTI at or below 35%, including the proposed mortgage payment.

Banks include all recurring monthly debt obligations that appear on your credit profile or can be verified through documentation. The most common items are:

• Existing home loan payments (if you already have a mortgage)
• Car loan monthly amortizations
• Credit card minimum payments (not the full balance — just the required minimum, typically 2–5% of the outstanding balance)
• Personal loan monthly payments (from banks, cooperatives, or licensed lenders)
• Salary loan deductions (from SSS, Pag-IBIG, or employer-based loans)
• Business loans where you are a personal guarantor
• The proposed new home loan repayment you are applying for

Items that are generally not included in DTI: utility bills, rent (if you're currently renting), household expenses, insurance premiums, and informal family financial obligations. These affect your cash flow but are not formally part of the DTI calculation that banks perform.

One practical note: even if you pay your credit cards in full every month, banks will still count the minimum payment against your DTI. If you have multiple cards with large credit limits, it may be worth reducing those limits or closing unused cards before applying.

Philippine banks generally accept the following income types as part of your DTI denominator, provided they are properly documented:

• Basic monthly salary — the most straightforward and most heavily weighted income type
• Allowances and guaranteed bonuses — some banks include these if they appear consistently on payslips and employment contracts
• 13th month pay — often divided by 12 and added to monthly income
• Business or self-employment income — averaged over 2 years of ITR or audited financials; banks typically apply a conservative factor (e.g., 70–80% of declared net income)
• Rental income — usually accepted at 70–80% of gross rental to account for vacancies and expenses, supported by a lease agreement and proof of receipt
• Remittance income (OFW) — accepted by most banks; requires Overseas Employment Certificate (OEC), employment contract, and at least 12 months of remittance history
• Spouse's income — if co-borrowing, the combined household income can be used

What banks do not count: informal income with no documentation, investment returns that aren't consistently received, and one-time windfalls. If a significant portion of your income is informal, it's worth speaking to a mortgage specialist about how to best present your application.

A high DTI doesn't necessarily mean the end of your home loan ambitions — it means you need a strategy. Here are the most effective ways to bring your DTI down to an approvable level:

1. Pay down or close existing debts. Eliminating a car loan, personal loan, or reducing credit card balances lowers your monthly obligations directly. Even paying off a loan with 6 months remaining can meaningfully shift your DTI.
2. Reduce your credit card limits. Banks count minimum payments based on outstanding balances. Reducing your limits or closing unused cards removes potential debt obligations from the calculation.
3. Add a co-borrower. Adding a spouse, parent, or sibling as a co-borrower increases the income denominator in your DTI calculation, which can bring the ratio to within acceptable limits.
4. Increase your down payment. A larger down payment reduces the loan amount, which in turn reduces the projected monthly payment — lowering the DTI the bank calculates for your application.
5. Choose a longer loan term. Stretching your loan from 15 to 20 or 25 years reduces the monthly amortization, which can bring DTI just under the threshold. Note that this increases total interest paid over the life of the loan.
6. Increase your documented income. If you have rental income, freelance earnings, or a side business, formalising these with proper documentation allows banks to count them.

If you're refinancing specifically to reduce your monthly payments and improve your overall financial position, use our home loan refinance calculator to model exactly how much your repayments could drop.

Yes — and this is an aspect many homeowners overlook. When you apply to refinance your home loan, the new bank treats it as a fresh loan application. That means it will assess your DTI ratio just as it would for a purchase loan, using your current income and all your existing obligations.

The good news is that refinancing itself can help your DTI situation in two ways. First, if you refinance to a significantly lower interest rate, your monthly mortgage payment decreases — which directly lowers the debt component of your DTI. Second, if you've been paying down your original loan for several years, your outstanding balance is lower, so the new monthly payment on a refinanced loan may be considerably less than your current payment.

For example: a homeowner with a 3,500,000 remaining balance currently paying 9% on a 20-year term has a monthly amortization of approximately 31,500. Refinancing that same balance at 5.99% over the remaining term could reduce the monthly payment to around 25,000 — a reduction of roughly 6,500 per month. That swing alone could push a borderline DTI from 41% down to below 35%, making the refinance application viable.

If you're not sure whether your DTI would qualify for a refinance, it's worth calculating your estimated savings and new repayments first. Our refinance calculator can help you model different scenarios before you approach any bank.

In the Philippines, home loan pricing is less individually risk-based than in markets like the US or Australia — most banks publish a standard rate schedule and apply it broadly. However, DTI still indirectly affects the rate you receive in several ways:

• Approval tier: Some banks have preferred customer programs with slightly lower rates for borrowers who meet stricter financial criteria, including a DTI well below the maximum threshold (typically under 30%).
• Negotiating leverage: A strong DTI — say, 25–30% — gives you credible standing to negotiate. Banks want quality borrowers, and if your profile is clean, you can often push back on the initial rate offered.
• Access to competitive products: The lowest rates — currently as low as 5.99% through Nook — are typically reserved for borrowers with strong overall profiles, of which a healthy DTI is a key component.
• Loan amount limits: A high DTI may not result in a flat rejection but could mean the bank approves a smaller loan amount than you applied for, which affects what property you can buy or how much equity you can unlock.

The practical implication: improving your DTI before applying doesn't just increase your chances of approval — it can also put you in a position to access lower rates and better terms than a borderline application would attract.

The timeline depends on which lever you're pulling, but here's a realistic breakdown:

• Pay off a specific loan (1–6 months): If you have a personal loan, salary loan, or car loan nearing its end, accelerating payoff is often the fastest route. Once the loan is fully paid and closed, banks will no longer count the monthly payment in your DTI.
• Reduce credit card balances (1–3 months): Paying down your outstanding balance reduces the minimum payment banks include in DTI. Results show up quickly once the updated balance is reflected in your credit profile.
• Add a co-borrower (immediately): If a spouse or family member with stable income agrees to co-borrow, your DTI can improve on the same application with no waiting period.
• Increase down payment (timeline varies): Saving for a larger down payment takes time, but it reduces loan size and monthly payments immediately on the new application.
• Document additional income (1–3 months): Formalising rental income with a registered lease or submitting updated ITR to capture business income can be done in weeks, depending on your circumstances.

A practical approach: calculate your current DTI today, identify the gap between where you are and the 35% target, then choose the combination of actions that closes that gap fastest. In many cases, two or three months of focused effort — paying down one debt and reducing a credit card balance — is enough to shift a 42% DTI to a bankable 34%.

Yes, and this is one of the most valuable things a mortgage broker can do for borrowers in the Philippines. DTI thresholds, income documentation requirements, and acceptable income types vary meaningfully from bank to bank. What triggers a decline at one institution may be perfectly acceptable at another.

A good mortgage broker will: assess your actual DTI before any bank ever sees your application; advise you on which banks are most likely to approve your specific profile; help you present your income and liabilities in the most accurate and complete way possible; and in some cases, advocate directly with bank credit teams on your behalf.

Nook does all of this for Filipino homeowners — and the service is completely free to the borrower. We work with BDO, BPI, Metrobank, Security Bank, RCBC, UnionBank, Chinabank, EastWest Bank, and others, which means we can match your DTI profile to the lender most likely to approve you at the best available rate. If you're currently paying above 7% on your home loan, the best refinance rate available through Nook right now is 5.99% p.a. — and getting there starts with understanding whether your DTI qualifies.