How Mortgage Payments Work
A mortgage payment is calculated using the same amortizing-loan formula as any installment loan, but applied to a home purchase: your loan amount (home price minus down payment) is repaid in fixed monthly installments over the loan term, typically 15, 20, or 30 years. Each payment is split between principal and interest, and in the first years of a long-term mortgage, the majority of every payment goes toward interest rather than reducing what you owe.
Down Payment Matters More Than You Think
A larger down payment doesn't just lower your monthly payment — it directly reduces the total interest you'll pay over the life of the loan, since interest is calculated on the remaining balance. A 20% down payment also typically lets you avoid Private Mortgage Insurance (PMI), an extra monthly cost lenders charge on smaller down payments.
15-Year vs 30-Year Mortgage
A 15-year mortgage has a higher monthly payment but a dramatically lower total interest cost, since the loan balance is paid off twice as fast. A 30-year mortgage spreads payments out for lower monthly affordability but typically costs significantly more in total interest. Use the loan term dropdown above to compare both scenarios for your numbers.
What This Calculator Doesn't Include
This tool calculates the core principal-and-interest payment only. Your actual monthly housing cost will likely also include property taxes, homeowner's insurance, and possibly HOA fees or PMI — budget an extra 1–2% of the home's value per year for taxes and insurance on top of the number shown here.
Home Financing in Pakistan
Pakistani banks (and institutions like the House Building Finance Company) offer home financing with markup rates that work the same mathematical way — a principal amount repaid with interest/markup over a fixed term. You can use this calculator with PKR values to estimate your monthly installment for any home financing plan available locally.