Mortgage Calculator
Calculate monthly payments, total interest. Supports commercial loans, provident fund loans, and combined loans
What is a Mortgage Calculator?
A mortgage calculator is an online home loan calculation tool designed specifically for homebuyers. It quickly and accurately calculates mortgage repayment amounts. Whether you're a first-time buyer or looking to upgrade, this tool helps you fully understand your loan repayment situation and make informed homebuying decisions.
Core Features
- Monthly Payment Calculation: Precisely calculate monthly payment amounts to help you plan household finances
- Interest Statistics: Display total loan interest so you understand the true cost of homeownership
- Payment Details: Period-by-period breakdown of principal, interest, and remaining loan balance
- Multi-Plan Comparison: Support comparison analysis across different loan types and repayment methods
Supported Loan Types
- Commercial Loan: Bank-provided commercial housing loan with higher rates but flexible amounts
- Provident Fund Loan: Housing provident fund loan with favorable rates but limited amounts
- Combined Loan: Commercial + provident fund loan combination, balancing rate advantages and loan amounts
Supported Repayment Methods
- Equal Principal & Interest: Fixed monthly payments, suitable for those with stable income seeking predictable repayment plans
- Equal Principal: Same principal payment each month with decreasing interest, less total interest but higher early repayment pressure
This calculator uses standard bank calculation formulas for accurate and reliable results. All calculations are performed locally in your browser to protect your privacy.
How to Use the Mortgage Calculator
Basic Operations
- Select loan type: commercial, provident fund, or combined loan
- Select repayment method: equal principal & interest or equal principal
- Enter loan amount (unit: 10,000)
- Enter loan term (typically 1-30 years)
- Enter or use default interest rate (consult your bank for current rates)
- Click 'Calculate' to view results
- Click 'Payment Schedule' to view period-by-period repayment plan
Practical Tips
Calculation Examples
Commercial Loan Example
Loan 1 million, 30 years, rate 4.2%
Equal P&I: Monthly payment ~4,890, total interest ~760K
Suitable when loan amount needs are high and provident fund loan limit is insufficient
Provident Fund Loan Example
Loan 600K, 30 years, rate 2.85%
Equal P&I: Monthly payment ~2,480, total interest ~290K
Lower rate and less interest, recommend using provident fund loan limit first
Combined Loan Example
Commercial 500K + Provident Fund 500K, 30 years
Combined monthly payment ~3,680, total interest ~520K
Balances provident fund rate advantage with commercial loan flexibility
Repayment Method Comparison
Loan 1 million, 30 years, rate 4.2%
Equal P&I: Monthly 4,890, total interest 760K
Equal Principal: First month 6,170 → Last month 2,787, total interest 630K
Equal principal saves 130K in interest but has higher early repayment pressure
FAQ
Q: What's the difference between equal principal & interest and equal principal?
A: Equal principal & interest has fixed monthly payments, with more interest and less principal in early period, later more principal and less interest. Suitable for those with stable income. Equal principal has same principal payment each month, decreasing monthly payments, less total interest but higher early repayment pressure. For 1M over 30 years at 4.2%: Equal P&I total interest ~760K, Equal Principal total interest ~630K, difference of 130K.
Q: What's the difference between provident fund loans and commercial loans?
A: Provident fund loans have lower rates (~2.85% in 2024) but limited amounts (typically 600K-1.2M depending on local policies), longer approval process. Commercial loans have higher rates (~4.2%), higher amounts, faster approval. Combined loans use both: maximize provident fund limit first, then commercial loan for remainder, resulting in a better overall rate.
Q: How to choose the loan term?
A: Longer terms mean lower monthly payments but more total interest. Monthly payment should not exceed 50% of household income. Generally, younger people can choose longer terms (25-30 years), middle-aged people can choose moderate terms (15-20 years). Example: 1M loan, 30-year payment is 4,890/month, 20-year is 6,170/month, 30 years costs about 150K more in interest.
Q: Are the calculations accurate?
A: This calculator uses standard bank mortgage calculation formulas with accurate and reliable results. Equal P&I formula: Monthly payment = [Principal × Monthly Rate × (1 + Monthly Rate)^Months] ÷ [(1 + Monthly Rate)^Months - 1]. However, actual rates and amounts depend on bank approval. This calculation is for reference only. Consult banks for current rates before applying.
Q: When is the best time for early repayment?
A: The best timing for early repayment depends on repayment method and loan progress. Equal P&I: Early repayment is most beneficial in the early period (first 1/3 of term), as interest proportion is higher then. Equal Principal: Since principal is paid faster with decreasing interest, earlier early repayment saves more interest. Use the payment schedule to analyze current interest proportion and make an informed decision.