Pag-IBIG Housing Loan Calculator

Estimate the monthly amortization, total payments, and total interest on a Pag-IBIG housing loan using the standard declining-balance amortization formula, then check the payment against your monthly income.

Quick Facts

Formula
M = P x r(1+r)^n / ((1+r)^n - 1)
r is the monthly interest rate (annual rate / 12) and n is the total number of monthly payments (years x 12); at 0% it reduces to P / n.
Loan term
Up to 30 years
Pag-IBIG housing loans can run up to 30 years, generally structured so the loan matures by around the borrower's 70th birthday.
Rate pricing
Fixed for a repricing period
Pag-IBIG locks the interest rate for a chosen fixing/repricing period; enter the rate quoted for your chosen period, since it can change once that period ends.

Your Results

Calculated
Monthly Amortization
-
Fixed monthly payment
Total Payments
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Sum of all payments over the term
Total Interest
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Total payments minus loan amount
Amortization vs. Income
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Monthly payment as % of gross income

Ready

Enter your loan amount, interest rate, term, and monthly income, then press Calculate.

How the Pag-IBIG Housing Loan Calculator works

A Pag-IBIG housing loan is repaid the same way almost every fixed-rate mortgage is: equal monthly installments that blend principal and interest so the balance reaches exactly zero at the end of the term. This calculator uses that standard declining-balance amortization formula to turn a loan amount, interest rate, and term into a concrete monthly payment, then adds up the total cost over the life of the loan.

The formula

For a loan amount P, a monthly interest rate r (the annual rate divided by 12), and n total monthly payments (years x 12), the fixed monthly amortization is:

M = P x r(1 + r)n / ((1 + r)n − 1)

If the interest rate is 0%, this reduces to M = P / n — the loan amount split evenly across the payments with no interest charged. Each payment is the same size, but the mix changes over time: early payments are mostly interest, and later payments are mostly principal.

Worked example

Take a PHP 1,500,000 loan at 6.25% annual interest over 20 years. The monthly rate is 0.0625 / 12 ≈ 0.005208 and n = 240 payments. The formula gives a monthly amortization of roughly PHP 10,964. Over 20 years (240 payments) that totals about PHP 2,631,000, meaning roughly PHP 1,131,000 of the total is interest on top of the original PHP 1,500,000 borrowed.

What Pag-IBIG housing loans add to the standard formula

  • Fixed-rate repricing periods: Pag-IBIG locks the interest rate for a chosen fixing period (short or long) rather than quoting one rate for the entire term. Enter the rate for the period you select — it can be repriced once that period ends, based on then-prevailing rates.
  • Term tied to age: the maximum term of up to 30 years is generally limited so the loan matures by around the time the borrower turns 70, so an older borrower may only qualify for a shorter term.
  • Fees and insurance not included: processing fees, mortgage redemption insurance, and fire insurance are billed separately from the amortization and are not part of this calculation — check your specific loan documents for those figures.

Reading the payment-to-income figure

The calculator also compares your monthly amortization to the monthly gross income you enter, expressed as a percentage. This is a general budgeting guideline, not an official Pag-IBIG qualification rule: many financial planners suggest keeping total housing payments at or below roughly 30% of gross monthly income, with anything above 40% considered a heavy burden on the budget. Pag-IBIG's own capacity-to-pay assessment during loan processing uses its own criteria and documentation, which this calculator does not replicate.

Frequently Asked Questions

How is the Pag-IBIG housing loan payment calculated?
The calculator uses the standard declining-balance amortization formula: M = P x r(1 + r)^n / ((1 + r)^n − 1), where P is the loan amount, r is the monthly interest rate (annual rate divided by 12), and n is the total number of monthly payments (years x 12). This is the same method used to amortize most fixed-rate mortgages, including Pag-IBIG housing loans.
What happens if the interest rate is 0%?
With no interest the formula reduces to M = P / n: the loan amount is simply split into equal monthly installments. For example, a PHP 1,200,000 loan over 20 years at 0% is PHP 1,200,000 / 240 = PHP 5,000 per month, and the total payments equal the loan amount with no interest paid.
Why does a longer term lower the monthly payment but raise the total cost?
Spreading the same loan amount over more monthly payments lowers each individual payment, but the unpaid balance keeps accruing interest for longer. That extra interest raises the sum of all payments, so a 30-year term costs more in total interest than a 15-year term on the same loan amount and rate, even though each monthly payment is smaller.
Does this include Pag-IBIG's fees and mortgage insurance?
No. This calculator computes only the principal-and-interest amortization from the standard loan formula. Pag-IBIG housing loans also involve a processing fee, mortgage redemption insurance, and fire insurance, which are billed separately and are not included in the monthly amortization figure shown here. Use this result as the base payment estimate and add those costs from your loan documents separately.

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